anthropic
The official Python library for the anthropic API
Why this rank:Strong adoptionRecent releaseHealthy release cadence
Description
# Claude SDK for Python [](https://pypi.org/project/anthropic/) The Claude SDK for Python provides access to the [Claude API](https://docs.anthropic.com/en/api/) from Python applications. ## Documentation Full documentation is available at **[platform.claude.com/docs/en/api/sdks/python](https://platform.claude.com/docs/en/api/sdks/python)**. ## Installation ```sh pip install anthropic ``` ## Getting started ```python import os from anthropic import Anthropic client = Anthropic( api_key=os.environ.get("ANTHROPIC_API_KEY"), # This is the default and can be omitted ) message = client.messages.create( max_tokens=1024, messages=[ { "role": "user", "content": "Hello, Claude", } ], model="claude-opus-4-6", ) print(message.content) ``` ## Requirements Python 3.9+ ## Contributing See [CONTRIBUTING.md](https://github.com/anthropics/anthropic-sdk-python/tree/main/./CONTRIBUTING.md). ## License This project is licensed under the MIT License. See the [LICENSE](https://github.com/anthropics/anthropic-sdk-python/tree/main/LICENSE) file for details.
Release History
| Version | Changes | Urgency | Date |
|---|---|---|---|
| v2.3.0 | ### Features * **api:** add Claude Tag endpoints for Claude Enterprise organizations ### Bug Fixes * **google-cloud:** send user profiles requests to the organization endpoint ### Chores * **client:** stop sending query params hardcoded in endpoint paths * **docs:** improve the descriptions of the code execution tool and its encrypted results * **docs:** reword work queue, skill and external key descriptions * **docs:** update descriptions of the per-user usage and cost reports * **intern | High | 10/23/2026 |
| v2.1.0 | ### Features * **api:** add enforcement status, actions and filter to user profiles | High | 10/21/2026 |
| v1.17.0 | ### Features * **api:** add org webhook endpoints and user profile enforcement events * **api:** add RBAC Group owner-access error codes to the Admin API * **api:** document the unsupported_charset error code for plugin uploads ### Bug Fixes * **bedrock:** keep a workspace ID set in default_headers on the Bedrock and Mantle clients * **google-cloud:** keep workspace and user profile IDs set in default_headers ### Chores * **ci:** run the changelog check on a standard runner | High | 10/20/2026 |
| v1.15.0 | ### Features * **api:** add between_tools to thinking types in model capabilities * **api:** add the speed parameter and usage.speed to Messages * **api:** return a Console organization's usage-tier spend cap as a read-only spend limit ### Chores * **ci:** speed up breaking change detection * **docs:** describe headers on Managed Agents and telemetry endpoints * **internal:** simplify the script that formats code blocks in docs * **tests:** cover OpenTelemetry options and method default time | High | 10/15/2026 |
| v1.14.0 | ### Features * **api:** add execution_identity to Managed Agents agents * **api:** add organization_type_not_supported error to spend limit lists * **api:** add telemetry destination test endpoint * **api:** add telemetry destinations to the Admin API * **client:** add native support for OpenTelemetry tracing If your app registers a global tracer provider, the SDK will create spans with it after upgrading, and they'll be exported with the rest of your traces. Requests will also get trace con | High | 10/14/2026 |
| v1.13.0 | ### Features * **api:** add types for the Chat and Cowork unified analytics metrics * **api:** add workflows, multiagent configuration and thread status filtering to Managed Agents ### Chores * **internal:** name the default API version header value | High | 10/9/2026 |
| v1.12.1 | ### Chores * **ci:** check that pull requests update the changelog * **docs:** note that listing Claude Console spend limits is in early access * **internal:** match the package version in uv.lock | High | 10/8/2026 |
| v1.11.0 | ## 1.11.0 (2026-09-30) Full Changelog: [v1.10.0...v1.11.0](https://github.com/anthropics/anthropic-sdk-python/compare/v1.10.0...v1.11.0) ### Features * **api:** add list spend limits endpoint ([e8f0cac](https://github.com/anthropics/anthropic-sdk-python/commit/e8f0cac35af67a083ba05a308d27328925e03568)) ### Chores * **client:** deprecate sonnet 4.5 ([22b36b1](https://github.com/anthropics/anthropic-sdk-python/commit/22b36b1a1b65cb87f2a6f3b40f61147c9e1c3e93)) | High | 9/30/2026 |
| v1.9.0 | ## 1.9.0 (2026-09-28) Full Changelog: [v1.8.0...v1.9.0](https://github.com/anthropics/anthropic-sdk-python/compare/v1.8.0...v1.9.0) ### Features * **api:** add between_tools thinking type ([a9a577d](https://github.com/anthropics/anthropic-sdk-python/commit/a9a577d5a98cb2e133c1f8362f69fff856808da1)) * **api:** add claude-sonnet-5-5 ([a5a25e9](https://github.com/anthropics/anthropic-sdk-python/commit/a5a25e9e35ac32f100149d1dfa0fbf8cac42a8b4)) * **api:** add include_inherited and source to works | High | 9/28/2026 |
| v1.8.0 | ## 1.8.0 (2026-09-22) Full Changelog: [v1.7.0...v1.8.0](https://github.com/anthropics/anthropic-sdk-python/compare/v1.7.0...v1.8.0) ### Features * **api:** add support for claude-opus-5-5, inline tool definitions and MCP tool-list pinning (beta) ([b5cc700](https://github.com/anthropics/anthropic-sdk-python/commit/b5cc70071a60def1d2e93f3634d1a595919007c8)) ### Bug Fixes * **api:** share one evaluated_permission enum across Managed Agents events ([f4f51c8](https://github.com/anthropics/anthr | High | 9/22/2026 |
| v1.7.0 | ## 1.7.0 (2026-09-18) Full Changelog: [v1.6.0...v1.7.0](https://github.com/anthropics/anthropic-sdk-python/compare/v1.6.0...v1.7.0) ### Features * **api:** add group with display_name to rate limits, deprecate group_type ([28f0a83](https://github.com/anthropics/anthropic-sdk-python/commit/28f0a831355fa3d539fd3e1db1c63f92a39bb252)) * **tools:** add compact_before_next_turn() to the tool runner ([#641](https://github.com/anthropics/anthropic-sdk-python/issues/641)) ([8b23fb3](https://github.com | High | 9/18/2026 |
| v1.6.0 | ## 1.6.0 (2026-09-15) Full Changelog: [v1.5.0...v1.6.0](https://github.com/anthropics/anthropic-sdk-python/compare/v1.5.0...v1.6.0) ### Features * **api:** add auto mode tool permissions for Managed Agents ([909d92f](https://github.com/anthropics/anthropic-sdk-python/commit/909d92ff57dd27270796407547ffbbf521cf941e)) * **api:** add compaction parameter and signed compaction blocks (beta) ([8689179](https://github.com/anthropics/anthropic-sdk-python/commit/8689179d2c760f005d0f7736387d352b71f05b | High | 9/15/2026 |
| v1.5.0 | ## 1.5.0 (2026-09-10) Full Changelog: [v1.4.0...v1.5.0](https://github.com/anthropics/anthropic-sdk-python/compare/v1.4.0...v1.5.0) ### Features * **api:** add auto mode tool permissions for Managed Agents ([62aa21b](https://github.com/anthropics/anthropic-sdk-python/commit/62aa21bb10c5d058d44ac969b06421f169495bee)) * **api:** add content_too_large web_fetch tool error code ([4b5dec6](https://github.com/anthropics/anthropic-sdk-python/commit/4b5dec6cb427528f3a4f144f11b1010be80a493b)) * **api: | High | 9/10/2026 |
| v1.3.0 | ## 1.3.0 (2026-09-01) Full Changelog: [v1.2.0...v1.3.0](https://github.com/anthropics/anthropic-sdk-python/compare/v1.2.0...v1.3.0) ### Features * **api:** beta user profiles: add external_user_onboarded_at, remove relationship in favor of access_type ([74080c3](https://github.com/anthropics/anthropic-sdk-python/commit/74080c35d6e4f3e5e7fd47454ecce2350cbfdd2b)) * **api:** manual updates ([1dc3ce0](https://github.com/anthropics/anthropic-sdk-python/commit/1dc3ce0709a9bca146b045dfb0787971e747b1 | High | 9/1/2026 |
| v1.0.0 | ## 1.0.0 (2026-08-20) Full Changelog: [v0.125.0...v1.0.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.125.0...v1.0.0) ### â BREAKING CHANGES * **client:** upgrade to httpx2 and some minor breaking changes. See MIGRATION.md for details ### Features * **client:** upgrade to httpx2 and some minor breaking changes. See MIGRATION.md for details ([33e2967](https://github.com/anthropics/anthropic-sdk-python/commit/33e296749dda59c3b9af85d9bee37ae241b92a28)) ### Bug Fixes * **be | High | 8/20/2026 |
| v0.121.0 | ## 0.121.0 (2026-08-07) Full Changelog: [v0.120.2...v0.121.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.120.2...v0.121.0) ### Features * **api:** add `mid-conversation-tool-changes-2026-07-01` beta ([c7d1531](https://github.com/anthropics/anthropic-sdk-python/commit/c7d1531d9d63a35430333039f8c975bba4ef0411)) * **api:** add support for session budgets, advisor tool, pinned inference location and skills auto-loading from GitHub ([193bae0](https://github.com/anthropics/anthro | High | 8/7/2026 |
| v0.120.2 | ## 0.120.2 (2026-07-28) Full Changelog: [v0.120.1...v0.120.2](https://github.com/anthropics/anthropic-sdk-python/compare/v0.120.1...v0.120.2) ### Bug Fixes * **mcp:** support mcp sdk v2 alongside v1 ([#300](https://github.com/anthropics/anthropic-sdk-python/issues/300)) ([177f88c](https://github.com/anthropics/anthropic-sdk-python/commit/177f88ccd7f966e47b654cb19ad0e9cfa4c58ac2)) | High | 7/28/2026 |
| v0.117.0 | ## 0.117.0 (2026-07-16) Full Changelog: [v0.116.0...v0.117.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.116.0...v0.117.0) ### Features * **api:** add support for dreaming ([642eee7](https://github.com/anthropics/anthropic-sdk-python/commit/642eee707b0fe3c35c21917f60b06846b2a3b291)) * **api:** add support for MCP Tunnels ([d716df6](https://github.com/anthropics/anthropic-sdk-python/commit/d716df6edb1df7de25f1b5e14dcab33b9aafc2ff)) ### Bug Fixes * **credentials:** keep cr | High | 7/16/2026 |
| v0.116.0 | ## 0.116.0 (2026-07-02) Full Changelog: [v0.115.1...v0.116.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.115.1...v0.116.0) ### Features * **api:** add agent-memory-2026-07-22 beta header ([e181d5c](https://github.com/anthropics/anthropic-sdk-python/commit/e181d5c1b233d5b0b313c78b27cf1dd27f620e74)) | High | 7/2/2026 |
| v0.112.0 | ## 0.112.0 (2026-06-24) Full Changelog: [v0.111.0...v0.112.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.111.0...v0.112.0) ### Features * **client:** add support for system.message streaming events ([2450d59](https://github.com/anthropics/anthropic-sdk-python/commit/2450d595731f9532080bb94eb8a43c0bd5189659)) ### Bug Fixes * **memory tool:** create parent directories with the correct permissions ([#135](https://github.com/anthropics/anthropic-sdk-python/issues/135)) ([f2f | High | 6/24/2026 |
| v0.109.2 | ## 0.109.2 (2026-06-15) Full Changelog: [v0.109.1...v0.109.2](https://github.com/anthropics/anthropic-sdk-python/compare/v0.109.1...v0.109.2) ### Chores * **api:** remove retired models from API and SDKs ([d4bcfcc](https://github.com/anthropics/anthropic-sdk-python/commit/d4bcfcc257bd0c97d5e75060bd19c97abddd9f49)) | High | 6/15/2026 |
| v0.109.1 | ## 0.109.1 (2026-06-09) Full Changelog: [v0.109.0...v0.109.1](https://github.com/anthropics/anthropic-sdk-python/compare/v0.109.0...v0.109.1) ### Bug Fixes * **api:** add `frontier_llm` refusal category ([d3a806b](https://github.com/anthropics/anthropic-sdk-python/commit/d3a806b454d8aaf5806db11c651deebe61836131)) | High | 6/9/2026 |
| v0.106.0 | ## 0.106.0 (2026-06-05) Full Changelog: [v0.105.2...v0.106.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.105.2...v0.106.0) ### Features * **api:** mark Claude Opus 4.1 as deprecated ([85068cc](https://github.com/anthropics/anthropic-sdk-python/commit/85068cc4cb42feecb80a378942cec71e1baa8dcf)) ### Bug Fixes * **client:** make Foundry client copy() and with_options() work ([94146ac](https://github.com/anthropics/anthropic-sdk-python/commit/94146acdc1c6f66f187d5a42e4afbb911 | High | 6/5/2026 |
| v0.105.2 | ## 0.105.2 (2026-05-29) Full Changelog: [v0.105.1...v0.105.2](https://github.com/anthropics/anthropic-sdk-python/compare/v0.105.1...v0.105.2) | High | 5/29/2026 |
| v0.104.1 | ## 0.104.1 (2026-05-21) Full Changelog: [v0.104.0...v0.104.1](https://github.com/anthropics/anthropic-sdk-python/compare/v0.104.0...v0.104.1) ### Bug Fixes * **streaming:** carry encrypted_content through beta compaction accumulator ([#1821](https://github.com/anthropics/anthropic-sdk-python/issues/1821)) ([f7a720c](https://github.com/anthropics/anthropic-sdk-python/commit/f7a720c514cc5e428b310f46249ca1c807894c2e)) | High | 5/22/2026 |
| v0.103.1 | ## 0.103.1 (2026-05-19) Full Changelog: [v0.103.0...v0.103.1](https://github.com/anthropics/anthropic-sdk-python/compare/v0.103.0...v0.103.1) ### Bug Fixes * **runner:** skip tool calls SessionToolRunner does not own ([#1817](https://github.com/anthropics/anthropic-sdk-python/issues/1817)) ([9425c6a](https://github.com/anthropics/anthropic-sdk-python/commit/9425c6a0c6ff5e1d459ac081914f3df496365884)) | High | 5/19/2026 |
| v0.102.0 | ## 0.102.0 (2026-05-13) Full Changelog: [v0.101.0...v0.102.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.101.0...v0.102.0) ### Features * **api:** Add BetaManagedAgentsSearchResultBlock types ([3681f10](https://github.com/anthropics/anthropic-sdk-python/commit/3681f1042608b6be4e5a56e8b52e6a619b9210f4)) * **api:** Add support for cache diagnostics beta ([db51c6c](https://github.com/anthropics/anthropic-sdk-python/commit/db51c6caabb1bede4c2d671a96e6ef88e90ffaba)) * **internal | High | 5/13/2026 |
| v0.101.0 | ## 0.101.0 (2026-05-11) Full Changelog: [v0.100.0...v0.101.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.100.0...v0.101.0) ### Features * **aws:** Add AWS client for Claude Platform on AWS ([1e70e3a](https://github.com/anthropics/anthropic-sdk-python/commit/1e70e3a21d57a96721685c1eca9cedd10cdd5b63)) ### Bug Fixes * **client:** add missing f-string prefix in file type error message ([06d109a](https://github.com/anthropics/anthropic-sdk-python/commit/06d109aaf36629ec15c8fb | High | 5/11/2026 |
| v0.100.0 | ## 0.100.0 (2026-05-06) Full Changelog: [v0.99.0...v0.100.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.99.0...v0.100.0) ### Features * **api:** add support for Managed Agents multiagents and outcomes, webhooks, vault validation ([3b3deee](https://github.com/anthropics/anthropic-sdk-python/commit/3b3deee9c479ce5b54411a8572b66c5a90f1d50f)) ### Bug Fixes * **api:** Adjust webhook configuration ([8c3339e](https://github.com/anthropics/anthropic-sdk-python/commit/8c3339e5324 | High | 5/6/2026 |
| v0.98.1 | ## 0.98.1 (2026-05-04) Full Changelog: [v0.98.0...v0.98.1](https://github.com/anthropics/anthropic-sdk-python/compare/v0.98.0...v0.98.1) ### Chores * fix typo in example ([#1754](https://github.com/anthropics/anthropic-sdk-python/issues/1754)) ([de8ba13](https://github.com/anthropics/anthropic-sdk-python/commit/de8ba13769837f92ff00be8a1b1e9ad0749eae2f)) | High | 5/4/2026 |
| v0.97.0 | ## 0.97.0 (2026-04-23) Full Changelog: [v0.96.0...v0.97.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.96.0...v0.97.0) ### Features * **api:** CMA Memory public beta ([fc30ebe](https://github.com/anthropics/anthropic-sdk-python/commit/fc30ebe5ca81204faa0b1d756b61dad176e37dcb)) ### Bug Fixes * **api:** fix errors in api spec ([f946de8](https://github.com/anthropics/anthropic-sdk-python/commit/f946de8da00748b472489e93ab4920d64d1cb22d)) * **api:** restore missing features ([ | High | 4/23/2026 |
| 0.96.0 | Imported from PyPI (0.96.0) | Low | 4/21/2026 |
| v0.96.0 | ## 0.96.0 (2026-04-16) Full Changelog: [v0.95.0...v0.96.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.95.0...v0.96.0) ### Features * **api:** add claude-opus-4-7, token budgets and user_profiles ([0aa2a0d](https://github.com/anthropics/anthropic-sdk-python/commit/0aa2a0d4388a39984134d1dfc2bcbd6b206f7184)) ### Chores * **ci:** remove release-doctor workflow ([1d9add3](https://github.com/anthropics/anthropic-sdk-python/commit/1d9add35d0bd4c71f2bca3b0d494d1d0a348817a)) | High | 4/16/2026 |
| v0.96.0 | ## 0.96.0 (2026-04-16) Full Changelog: [v0.95.0...v0.96.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.95.0...v0.96.0) ### Features * **api:** add claude-opus-4-7, token budgets and user_profiles ([0aa2a0d](https://github.com/anthropics/anthropic-sdk-python/commit/0aa2a0d4388a39984134d1dfc2bcbd6b206f7184)) ### Chores * **ci:** remove release-doctor workflow ([1d9add3](https://github.com/anthropics/anthropic-sdk-python/commit/1d9add35d0bd4c71f2bca3b0d494d1d0a348817a)) | High | 4/16/2026 |
| v0.95.0 | ## 0.95.0 (2026-04-14) Full Changelog: [v0.94.1...v0.95.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.94.1...v0.95.0) ### Features * **api:** mark Sonnet and Opus 4 as deprecated ([0c1e773](https://github.com/anthropics/anthropic-sdk-python/commit/0c1e7736394585dd021b53c1f87383c4fae29a6b)) * **bedrock:** use auth header for mantle client ([#1644](https://github.com/anthropics/anthropic-sdk-python/issues/1644)) ([3b93090](https://github.com/anthropics/anthropic-sdk-python/co | Medium | 4/14/2026 |
| v0.94.1 | ## 0.94.1 (2026-04-13) Full Changelog: [v0.94.0...v0.94.1](https://github.com/anthropics/anthropic-sdk-python/compare/v0.94.0...v0.94.1) ### Bug Fixes * **streaming:** add missing events ([c6a06d8](https://github.com/anthropics/anthropic-sdk-python/commit/c6a06d80b7e87bc034bd6ade950c735da02a0be3)) | Medium | 4/13/2026 |
| v0.94.0 | ## 0.94.0 (2026-04-10) Full Changelog: [v0.93.0...v0.94.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.93.0...v0.94.0) ### Features * vertex eu region ([#1658](https://github.com/anthropics/anthropic-sdk-python/issues/1658)) ([b7e157d](https://github.com/anthropics/anthropic-sdk-python/commit/b7e157d85f50b2900ddf896e8e80882dd7311bfd)) ### Bug Fixes * ensure file data are only sent as 1 parameter ([837b25b](https://github.com/anthropics/anthropic-sdk-python/commit/837b25bb | Medium | 4/10/2026 |
| v0.93.0 | ## 0.93.0 (2026-04-09) Full Changelog: [v0.92.0...v0.93.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.92.0...v0.93.0) ### Features * **api:** Add beta advisor tool ([4297dca](https://github.com/anthropics/anthropic-sdk-python/commit/4297dca285441b185ea9e3d18b7f912102b54be2)) | Medium | 4/9/2026 |
| v0.92.0 | ## 0.92.0 (2026-04-08) Full Changelog: [v0.91.0...v0.92.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.91.0...v0.92.0) ### Features * **api:** add support for Claude Managed Agents ([5b879a7](https://github.com/anthropics/anthropic-sdk-python/commit/5b879a7d929bd93332d777bed067be680819dfac)) | Medium | 4/8/2026 |
| v0.91.0 | ## 0.91.0 (2026-04-07) Full Changelog: [v0.90.0...v0.91.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.90.0...v0.91.0) ### Features * **client:** Create Bedrock Mantle client ([#1616](https://github.com/anthropics/anthropic-sdk-python/issues/1616)) ([fd195a2](https://github.com/anthropics/anthropic-sdk-python/commit/fd195a2fa2cd44ebf4513e69f671def88d2b6ec9)) | Medium | 4/7/2026 |
| v0.90.0 | ## 0.90.0 (2026-04-07) Full Changelog: [v0.89.0...v0.90.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.89.0...v0.90.0) ### Features * **api:** Add support for claude-mythos-preview ([fc7ddd8](https://github.com/anthropics/anthropic-sdk-python/commit/fc7ddd8e0296a578f09c7fa2baf00e50d81cf980)) ### Bug Fixes * **client:** preserve hardcoded query params when merging with user params ([32d35e0](https://github.com/anthropics/anthropic-sdk-python/commit/32d35e0ae67ab0d076a60d38 | Medium | 4/7/2026 |
| v0.89.0 | ## 0.89.0 (2026-04-03) Full Changelog: [v0.88.0...v0.89.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.88.0...v0.89.0) ### Features * **vertex:** add support for US multi-region endpoint ([4e732da](https://github.com/anthropics/anthropic-sdk-python/commit/4e732dada087146cfeff1f4afdf90513590e248d)) ### Bug Fixes * **client:** preserve hardcoded query params when merging with user params ([e7f4a3c](https://github.com/anthropics/anthropic-sdk-python/commit/e7f4a3cada266e9719 | Medium | 4/3/2026 |
| v0.88.0 | ## 0.88.0 (2026-04-01) Full Changelog: [v0.87.0...v0.88.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.87.0...v0.88.0) ### Features * **api:** add structured stop_details to message responses ([fd82d6b](https://github.com/anthropics/anthropic-sdk-python/commit/fd82d6b87ef0db5b2970d8f27ccc6d5981745572)) * bedrock api key auth ([#1623](https://github.com/anthropics/anthropic-sdk-python/issues/1623)) ([a95a3fc](https://github.com/anthropics/anthropic-sdk-python/commit/a95a3fc58 | Medium | 4/1/2026 |
| v0.87.0 | ## 0.87.0 (2026-03-31) Full Changelog: [v0.86.0...v0.87.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.86.0...v0.87.0) ### Features * **client:** add error type field to APIStatusError ([#1587](https://github.com/anthropics/anthropic-sdk-python/issues/1587)) ([dd563c0](https://github.com/anthropics/anthropic-sdk-python/commit/dd563c031c2a0be75ccb6175246685abd5806d7d)) * **internal:** implement indices array format for query and form serialization ([11a6244](https://github.co | Medium | 3/31/2026 |
| v0.86.0 | ## 0.86.0 (2026-03-18) Full Changelog: [v0.85.0...v0.86.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.85.0...v0.86.0) ### Features * add support for filesystem memory tools ([#1247](https://github.com/anthropics/anthropic-sdk-python/issues/1247)) ([235d218](https://github.com/anthropics/anthropic-sdk-python/commit/235d218211ac4b8f1aa37e29bedc998bfb6ce77d)) * **api:** manual updates ([86dbe4a](https://github.com/anthropics/anthropic-sdk-python/commit/86dbe4aa58386bfb8d1497de | Low | 3/18/2026 |
| v0.85.0 | ## 0.85.0 (2026-03-16) Full Changelog: [v0.84.0...v0.85.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.84.0...v0.85.0) ### Features * **api:** chore(config): clean up model enum list ([#31](https://github.com/anthropics/anthropic-sdk-python/issues/31)) ([cce1a5b](https://github.com/anthropics/anthropic-sdk-python/commit/cce1a5b9e6fce4f269cec42803f37ce5e2ac2f76)) * **api:** GA thinking-display-setting ([207340c](https://github.com/anthropics/anthropic-sdk-python/commit/207340 | Low | 3/16/2026 |
| v0.84.0 | ## 0.84.0 (2026-02-25) Full Changelog: [v0.83.0...v0.84.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.83.0...v0.84.0) ### Features * **api:** change array_format to brackets ([925d2ad](https://github.com/anthropics/anthropic-sdk-python/commit/925d2ad6b76ad7c15de07b9b2768738775f71631)) * **api:** remove publishing section from cli target ([7bc7ceb](https://github.com/anthropics/anthropic-sdk-python/commit/7bc7cebc68db70f08fce23e7e0b24acbc9ff37a7)) * **helpers:** add conversi | Low | 2/25/2026 |
| v0.83.0 | ## 0.83.0 (2026-02-19) Full Changelog: [v0.82.0...v0.83.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.82.0...v0.83.0) ### Features * **api:** Add top-level cache control (automatic caching) ([a940123](https://github.com/anthropics/anthropic-sdk-python/commit/a940123da34ac33f0b6f20ce91807829451d1233)) ### Chores * update mock server docs ([34ef48c](https://github.com/anthropics/anthropic-sdk-python/commit/34ef48ceb0f1734d6b695890f689dc42eb0b004e)) | Low | 2/19/2026 |
| v0.82.0 | ## 0.82.0 (2026-02-18) Full Changelog: [v0.81.0...v0.82.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.81.0...v0.82.0) ### Features * **api:** fix shared UserLocation and error code types ([da3b931](https://github.com/anthropics/anthropic-sdk-python/commit/da3b931a2be768d77c228a4804d2f7f75caeb71c)) ### Bug Fixes * add backward-compat aliases for removed nested UserLocation classes ([#1409](https://github.com/anthropics/anthropic-sdk-python/issues/1409)) ([56db1e3](https:/ | Low | 2/18/2026 |
| v0.81.0 | ## 0.81.0 (2026-02-18) Full Changelog: [v0.80.0...v0.81.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.80.0...v0.81.0) ### Features * **api:** Make new tool versions available as top level tool types ([0a385c2](https://github.com/anthropics/anthropic-sdk-python/commit/0a385c29d26981f846b7394aefc89eebb43a4b60)) | Low | 2/18/2026 |
| v0.80.0 | ## 0.80.0 (2026-02-17) Full Changelog: [v0.79.0...v0.80.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.79.0...v0.80.0) ### Features * **api:** Releasing claude-sonnet-4-6 ([d518d6e](https://github.com/anthropics/anthropic-sdk-python/commit/d518d6ecede3d0638f0b14950dc2be8efa0b4ff4)) ### Bug Fixes * **api:** fix spec errors ([1413a76](https://github.com/anthropics/anthropic-sdk-python/commit/1413a76f905e590fab583417f5cb1eef9f537c2c)) * remove speed from ga messages ([#1402] | Low | 2/17/2026 |
| v0.79.0 | ## 0.79.0 (2026-02-07) Full Changelog: [v0.78.0...v0.79.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.78.0...v0.79.0) ### Features * **api:** enabling fast-mode in claude-opus-4-6 ([5953ba7](https://github.com/anthropics/anthropic-sdk-python/commit/5953ba7b425ba113595de570bc8c639ff4dc4047)) ### Bug Fixes * pass speed parameter through in sync beta count_tokens ([1dd6119](https://github.com/anthropics/anthropic-sdk-python/commit/1dd6119daca6de7a6eb730eb2494f368889ea050)) | Low | 2/7/2026 |
| v0.78.0 | ## 0.78.0 (2026-02-05) Full Changelog: [v0.77.1...v0.78.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.77.1...v0.78.0) ### Features * **api:** Release Claude Opus 4.6, adaptive thinking, and other features ([3ef1529](https://github.com/anthropics/anthropic-sdk-python/commit/3ef1529b45c55645646cc6043784f999fda088de)) | Low | 2/5/2026 |
| v0.77.1 | ## 0.77.1 (2026-02-03) Full Changelog: [v0.77.0...v0.77.1](https://github.com/anthropics/anthropic-sdk-python/compare/v0.77.0...v0.77.1) ### Bug Fixes * **structured outputs:** send structured output beta header when format is omitted ([#1158](https://github.com/anthropics/anthropic-sdk-python/issues/1158)) ([258494e](https://github.com/anthropics/anthropic-sdk-python/commit/258494e2b814a6a096b01e50f83560b4cf4a98ad)) ### Chores * remove claude-code-review workflow ([#1338](https://github.c | Low | 2/3/2026 |
| v0.77.0 | ## 0.77.0 (2026-01-29) Full Changelog: [v0.76.0...v0.77.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.76.0...v0.77.0) ### Features * **api:** add support for Structured Outputs in the Messages API ([ad56677](https://github.com/anthropics/anthropic-sdk-python/commit/ad5667774ad2e7efd181bcfda03fab3ea50630b9)) * **api:** migrate sending message format in output_config rather than output_format ([af405e4](https://github.com/anthropics/anthropic-sdk-python/commit/af405e473f7cf60 | Low | 1/29/2026 |
| v0.76.0 | ## 0.76.0 (2026-01-13) Full Changelog: [v0.75.0...v0.76.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.75.0...v0.76.0) ### Features * allow raw JSON schema to be passed to messages.stream() ([955c61d](https://github.com/anthropics/anthropic-sdk-python/commit/955c61dd5aae4c8a2c7b8fab1f97a0b88c0ef03b)) * **client:** add support for binary request streaming ([5302f27](https://github.com/anthropics/anthropic-sdk-python/commit/5302f2724c9890340c1b0dd042a1e670ed00eb93)) * **tool r | Low | 1/13/2026 |
| v0.75.0 | ## 0.75.0 (2025-11-24) Full Changelog: [v0.74.1...v0.75.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.74.1...v0.75.0) ### Features * **api:** adds support for Claude Opus 4.5, Effort, Advance Tool Use Features, Autocompaction, and Computer Use v5 ([5c3e633](https://github.com/anthropics/anthropic-sdk-python/commit/5c3e633395acc100c45e8a403f1b5be4d17a3b32)) ### Bug Fixes * **internal:** small fixes ([36c82f7](https://github.com/anthropics/anthropic-sdk-python/commit/36c82 | Low | 11/24/2025 |
| v0.74.1 | ## 0.74.1 (2025-11-19) Full Changelog: [v0.74.0...v0.74.1](https://github.com/anthropics/anthropic-sdk-python/compare/v0.74.0...v0.74.1) ### Bug Fixes * **structured outputs:** use correct beta header ([e90d347](https://github.com/anthropics/anthropic-sdk-python/commit/e90d347dfd80adc5ae2a412ebfe2eb55351ce08e)) ### Chores * **examples:** update model references ([e09461d](https://github.com/anthropics/anthropic-sdk-python/commit/e09461da36405bbb1a7ef616b9281457b2a6e20f)) | Low | 11/19/2025 |
| v0.74.0 | ## 0.74.0 (2025-11-18) Full Changelog: [v0.73.0...v0.74.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.73.0...v0.74.0) ### Features * add Foundry SDK ([3ae9e45](https://github.com/anthropics/anthropic-sdk-python/commit/3ae9e45451d3ff85b25ba5f5f9f8786ea35e3cc9)) ### Bug Fixes * **examples/memory:** properly add assistant_content to messages ([#1049](https://github.com/anthropics/anthropic-sdk-python/issues/1049)) ([9c7141b](https://github.com/anthropics/anthropic-sdk-pytho | Low | 11/18/2025 |
| v0.73.0 | ## 0.73.0 (2025-11-14) Full Changelog: [v0.72.1...v0.73.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.72.1...v0.73.0) ### Features * **api:** add support for structured outputs beta ([688da81](https://github.com/anthropics/anthropic-sdk-python/commit/688da8126df8a304c5f01f0dc63cda437a62c217)) | Low | 11/14/2025 |
| v0.72.1 | ## 0.72.1 (2025-11-11) Full Changelog: [v0.72.0...v0.72.1](https://github.com/anthropics/anthropic-sdk-python/compare/v0.72.0...v0.72.1) ### Bug Fixes * **client:** close streams without requiring full consumption ([109b771](https://github.com/anthropics/anthropic-sdk-python/commit/109b77175c844c37e6e57899a732a0ba293a2942)) * compat with Python 3.14 ([bd2a137](https://github.com/anthropics/anthropic-sdk-python/commit/bd2a137a46cd899e28e81dd8d445dad23440674c)) * **compat:** update signatures o | Low | 11/11/2025 |
| v0.72.0 | ## 0.72.0 (2025-10-28) Full Changelog: [v0.71.1...v0.72.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.71.1...v0.72.0) ### Features * **api:** add ability to clear thinking in context management ([27c8f17](https://github.com/anthropics/anthropic-sdk-python/commit/27c8f17c573c73c4db2146731ef1ab712140b0a2)) | Low | 10/28/2025 |
| v0.71.1 | ## 0.71.1 (2025-10-28) Full Changelog: [v0.71.0...v0.71.1](https://github.com/anthropics/anthropic-sdk-python/compare/v0.71.0...v0.71.1) ### Bug Fixes * **client:** resolve non-functional default socket options ([4606137](https://github.com/anthropics/anthropic-sdk-python/commit/4606137fcca27ab2d03669999b624c11394b090a)) ### Chores * **api:** mark older sonnet models as deprecated ([7906595](https://github.com/anthropics/anthropic-sdk-python/commit/7906595fe2f214cf0449d073145629ea8d3da437) | Low | 10/28/2025 |
| v0.71.0 | ## 0.71.0 (2025-10-16) Full Changelog: [v0.70.0...v0.71.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.70.0...v0.71.0) ### Features * **api:** adding support for agent skills ([51a606f](https://github.com/anthropics/anthropic-sdk-python/commit/51a606f497fd278c96af00936aa98d94bdfc9ae4)) | Low | 10/16/2025 |
| v0.70.0 | ## 0.70.0 (2025-10-15) Full Changelog: [v0.69.0...v0.70.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.69.0...v0.70.0) ### Features * **api:** manual updates ([39e62ac](https://github.com/anthropics/anthropic-sdk-python/commit/39e62ac0de90c09dc37aa5e3b44f2c884268e042)) ### Chores * **client:** add context-management-2025-06-27 beta header ([36dd334](https://github.com/anthropics/anthropic-sdk-python/commit/36dd3346b1460f003270888693fbc82dba16dc62)) * **client:** add model | Low | 10/15/2025 |
| v0.69.0 | ## 0.69.0 (2025-09-29) Full Changelog: [v0.68.2...v0.69.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.68.2...v0.69.0) ### Features * **api:** adds support for Claude Sonnet 4.5 and context management features ([f93eb12](https://github.com/anthropics/anthropic-sdk-python/commit/f93eb12dbfeaa68fb24590391ec72243836eb47a)) | Low | 9/29/2025 |
| v0.68.2 | ## 0.68.2 (2025-09-29) Full Changelog: [v0.68.1...v0.68.2](https://github.com/anthropics/anthropic-sdk-python/compare/v0.68.1...v0.68.2) ### Bug Fixes * do not set headers with default to omit ([95b14ab](https://github.com/anthropics/anthropic-sdk-python/commit/95b14ab8fa8b63b95cb82cad1347915c163818d2)) | Low | 9/29/2025 |
| v0.68.1 | ## 0.68.1 (2025-09-26) Full Changelog: [v0.68.0...v0.68.1](https://github.com/anthropics/anthropic-sdk-python/compare/v0.68.0...v0.68.1) ### Chores * **deps:** move deprecated `dev-dependencies` in `pyproject.toml` to dev group ([df16b88](https://github.com/anthropics/anthropic-sdk-python/commit/df16b88ade25f91c0b2c88d4ae256c861e4db170)) * do not install brew dependencies in ./scripts/bootstrap by default ([a457673](https://github.com/anthropics/anthropic-sdk-python/commit/a45767347f27258290c | Low | 9/26/2025 |
| v0.68.0 | ## 0.68.0 (2025-09-17) Full Changelog: [v0.67.0...v0.68.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.67.0...v0.68.0) ### Features * add tool running helpers ([d9c9ce6](https://github.com/anthropics/anthropic-sdk-python/commit/d9c9ce63de5b5888dff0d9ba2d79724520152420)) ### Chores * **internal:** fix tests ([9858c79](https://github.com/anthropics/anthropic-sdk-python/commit/9858c791309a1af2fbc2cb4d042812de83d1a635)) * **internal:** update pydantic dependency ([f59c2f1](ht | Low | 9/17/2025 |
| v0.67.0 | ## 0.67.0 (2025-09-10) Full Changelog: [v0.66.0...v0.67.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.66.0...v0.67.0) ### Features * **api:** adds support for web_fetch_20250910 tool ([f85b6a1](https://github.com/anthropics/anthropic-sdk-python/commit/f85b6a172b4b6d3b42119d75f0fefbbf7dcd2351)) * improve future compat with pydantic v3 ([39f28c5](https://github.com/anthropics/anthropic-sdk-python/commit/39f28c51d328bc7bf5f86f252ea63e8325815c72)) ### Bug Fixes * more update | Low | 9/10/2025 |
| v0.66.0 | ## 0.66.0 (2025-09-03) Full Changelog: [v0.65.0...v0.66.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.65.0...v0.66.0) ### Features * **api:** adds support for Documents in tool results ([5309dad](https://github.com/anthropics/anthropic-sdk-python/commit/5309dad584bb31284516e0d44681f1b46d1a663d)) | Low | 9/3/2025 |
| v0.65.0 | ## 0.65.0 (2025-09-02) Full Changelog: [v0.64.0...v0.65.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.64.0...v0.65.0) ### Features * **client:** adds support for code-execution-2025-08-26 tool ([fe92af0](https://github.com/anthropics/anthropic-sdk-python/commit/fe92af02a2fa2d1bc626bb238ee54886bc701829)) * **types:** replace List[str] with SequenceNotStr in params ([f542b54](https://github.com/anthropics/anthropic-sdk-python/commit/f542b541ba1e70b65704e9b96a87733cb1d9d77f)) | Low | 9/2/2025 |
| v0.64.0 | ## 0.64.0 (2025-08-13) Full Changelog: [v0.63.0...v0.64.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.63.0...v0.64.0) ### Features * **api:** makes 1 hour TTL Cache Control generally available ([35201ba](https://github.com/anthropics/anthropic-sdk-python/commit/35201baef190c354a803278aa926490ff6069abf)) ### Chores * deprecate older claude-3-5 sonnet models ([#1116](https://github.com/anthropics/anthropic-sdk-python/issues/1116)) ([3e8e10d](https://github.com/anthropics/a | Low | 8/13/2025 |
| v0.63.0 | ## 0.63.0 (2025-08-12) Full Changelog: [v0.62.0...v0.63.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.62.0...v0.63.0) ### Features * **betas:** add context-1m-2025-08-07 ([57a80e7](https://github.com/anthropics/anthropic-sdk-python/commit/57a80e7a2cf6813db6633516dbb5bb65a6e85122)) ### Chores * **internal:** detect breaking changes when removing endpoints ([5c62d7b](https://github.com/anthropics/anthropic-sdk-python/commit/5c62d7bdaf8a180dcb6bc30c17a6bdf13d976ab2)) * **in | Low | 8/12/2025 |
| v0.62.0 | ## 0.62.0 (2025-08-08) Full Changelog: [v0.61.0...v0.62.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.61.0...v0.62.0) ### Features * **api:** search result content blocks ([1ae15cd](https://github.com/anthropics/anthropic-sdk-python/commit/1ae15cd58da2c58dfb85276860ec407401c04cc6)) | Low | 8/8/2025 |
| v0.61.0 | ## 0.61.0 (2025-08-05) Full Changelog: [v0.60.0...v0.61.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.60.0...v0.61.0) ### Features * **api:** add claude-opus-4-1-20250805 ([baae0ee](https://github.com/anthropics/anthropic-sdk-python/commit/baae0ee315d645aaa55b01a9eae0549ea42b7cb5)) * **api:** adds support for text_editor_20250728 tool ([9ad8fe5](https://github.com/anthropics/anthropic-sdk-python/commit/9ad8fe53d6878715e5d423aedba6cc23109e47ea)) * **client:** support file up | Low | 8/5/2025 |
| v0.60.0 | ## 0.60.0 (2025-07-28) Full Changelog: [v0.59.0...v0.60.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.59.0...v0.60.0) ### Features * update streaming error message to say 'required' not 'recommended' ([57120c8](https://github.com/anthropics/anthropic-sdk-python/commit/57120c8e0579ca3d3218ce043cc46c82345a925e)) * update streaming error message to say 'required' not 'recommended' ([3b47368](https://github.com/anthropics/anthropic-sdk-python/commit/3b47368ca00a51bc4876066af502 | Low | 7/28/2025 |
| v0.59.0 | ## 0.59.0 (2025-07-23) Full Changelog: [v0.58.2...v0.59.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.58.2...v0.59.0) ### Features * **api:** removed older deprecated models ([38998fd](https://github.com/anthropics/anthropic-sdk-python/commit/38998fdab79b62349481c9c49579a825a5a33761)) ### Bug Fixes * **parsing:** ignore empty metadata ([7099f32](https://github.com/anthropics/anthropic-sdk-python/commit/7099f32a401b1f2a08b358562e325571a5fce8f6)) * **parsing:** parse extra | Low | 7/23/2025 |
| v0.58.2 | ## 0.58.2 (2025-07-18) Full Changelog: [v0.58.1...v0.58.2](https://github.com/anthropics/anthropic-sdk-python/compare/v0.58.1...v0.58.2) ### Chores * **internal:** version bump ([cd5d1ad](https://github.com/anthropics/anthropic-sdk-python/commit/cd5d1adc34e488f1c9e3a6d2a46f69e5c168e3f6)) | Low | 7/18/2025 |
| v0.58.1 | ## 0.58.1 (2025-07-18) Full Changelog: [v0.58.0...v0.58.1](https://github.com/anthropics/anthropic-sdk-python/compare/v0.58.0...v0.58.1) ### Chores * **internal:** version bump ([31c3b38](https://github.com/anthropics/anthropic-sdk-python/commit/31c3b380e5ceab20789080c65cef9bd74e318a3e)) | Low | 7/18/2025 |
| v0.58.0 | ## 0.58.0 (2025-07-18) Full Changelog: [v0.57.1...v0.58.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.57.1...v0.58.0) ### Features * clean up environment call outs ([4f64e9c](https://github.com/anthropics/anthropic-sdk-python/commit/4f64e9c1bdb142bbcff2072baa709afdea348889)) ### Bug Fixes * **client:** don't send Content-Type header on GET requests ([727268f](https://github.com/anthropics/anthropic-sdk-python/commit/727268f2bd4cb42aa1472e1f0c6a92fd6a5cb122)) * **parsing: | Low | 7/18/2025 |
| v0.57.1 | ## 0.57.1 (2025-07-03) Full Changelog: [v0.57.0...v0.57.1](https://github.com/anthropics/anthropic-sdk-python/compare/v0.57.0...v0.57.1) ### Chores * **api:** update BetaCitationSearchResultLocation ([e0735b4](https://github.com/anthropics/anthropic-sdk-python/commit/e0735b45216fc97866492bf2fff50ea7bc9768ef)) * **internal:** version bump ([d368831](https://github.com/anthropics/anthropic-sdk-python/commit/d3688311d7b175986cff8e87ccc6e4d3159e43f4)) | Low | 7/3/2025 |
| v0.57.0 | ## 0.57.0 (2025-07-03) Full Changelog: [v0.56.0...v0.57.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.56.0...v0.57.0) ### Features * **api:** add support for Search Result Content Blocks ([4896178](https://github.com/anthropics/anthropic-sdk-python/commit/4896178d23832e4c84775571e8919c690ff998a1)) ### Bug Fixes * improve timeout/network error message to be more helpful ([347fb57](https://github.com/anthropics/anthropic-sdk-python/commit/347fb57c49129ff1fdac19859eb4c80808 | Low | 7/3/2025 |
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