Anthropic SDK (Python) v0.122.0
0.122.0 (2026-08-13) Full Changelog: v0.121.0...v0.122.0 Features api: add output_behavior to dream creation (create a new memory store or update the input store in place) (852c4bb) Bug Fixes bedrock,aws: run SigV4…
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0.122.0 (2026-08-13) Full Changelog: v0.121.0...v0.122.0 Features api: add output_behavior to dream creation (create a new memory store or update the input store in place) (852c4bb) Bug Fixes bedrock,aws: run SigV4…
0.121.0 (2026-08-07) Full Changelog: v0.120.2...v0.121.0 Features api: add `mid-conversation-tool-changes-2026-07-01` beta (c7d1531) api: add support for session budgets, advisor tool, pinned inference location and…
0.120.2 (2026-07-28) Full Changelog: v0.120.1...v0.120.2 Bug Fixes mcp: support mcp sdk v2 alongside v1 (#300) (177f88c)
0.120.1 (2026-07-28) Full Changelog: v0.120.0...v0.120.1 Bug Fixes mcp: pin mcp extra to <2 (#1783) (fb66371)
0.120.0 (2026-07-24) Full Changelog: v0.119.0...v0.120.0 Features api: add claude-opus-5 model (bf4e31c) api: add tool addition/removal blocks and tool_change events (bf4e31c) api: expand client-side fallback credit…
0.119.0 (2026-07-23) Full Changelog: v0.118.0...v0.119.0 Features api: add new stop reason 'model_context_window_exceeded' (d983cde) Bug Fixes tools: handle binary files in agent toolset read/edit (#283) (417b76b)
0.118.0 (2026-07-22) Full Changelog: v0.117.1...v0.118.0 Features api: add support for Managed Agents model effort, initial session events, and threads delta streaming (712bc6f)
0.117.1 (2026-07-21) Full Changelog: v0.117.0...v0.117.1 Bug Fixes aws: handle credentials correctly when using AnthropicAWS.copy() (85d3881) Chores api: add support for new refusal category (d1dea0b) client: docs…
0.117.0 (2026-07-16) Full Changelog: v0.116.0...v0.117.0 Features api: add support for dreaming (642eee7) api: add support for MCP Tunnels (d716df6) Bug Fixes credentials: keep credential material out of traceback…
0.116.0 (2026-07-02) Full Changelog: v0.115.1...v0.116.0 Features api: add agent-memory-2026-07-22 beta header (e181d5c)
0.115.1 (2026-07-01) Full Changelog: v0.115.0...v0.115.1 Chores api: remove some nonfunctional types from the SDKs (5e7c431)
0.115.0 (2026-06-30) Full Changelog: v0.114.0...v0.115.0 Features api: add support for Managed Agents event delta streaming, agent overrides, reverse pagination, vault credential injection scoping, and agent and…
0.114.0 (2026-06-30) Full Changelog: v0.113.0...v0.114.0 Features api: add support for claude-sonnet-5 (b893033) Bug Fixes agent_toolset: allow absolute paths that resolve inside workdir (#121) (0105529)
0.113.0 (2026-06-29) Full Changelog: v0.112.0...v0.113.0 Features api: add support for 20260318 web fetch and support tools (88dbfb1) Bug Fixes async count_tokens missing output_format/output_config merge block (#162)…
0.112.0 (2026-06-24) Full Changelog: v0.111.0...v0.112.0 Features client: add support for system.message streaming events (2450d59) Bug Fixes memory tool: create parent directories with the correct permissions (#135)…
0.111.0 (2026-06-18) Full Changelog: v0.110.0...v0.111.0 Features helpers: tag refusal-fallback middleware requests with fallback-refusal-middleware (#96) (2f8ac78)
0.110.0 (2026-06-18) Full Changelog: v0.109.2...v0.110.0 Features api: add support for new code_execution_20260120 tool (5e23212) Bug Fixes append x-stainless-helper across header merges instead of clobbering (#105)…
0.109.2 (2026-06-15) Full Changelog: v0.109.1...v0.109.2 Chores api: remove retired models from API and SDKs (d4bcfcc)
0.109.1 (2026-06-09) Full Changelog: v0.109.0...v0.109.1 Bug Fixes api: add `frontier_llm` refusal category (d3a806b)
0.109.0 (2026-06-09) Full Changelog: v0.108.0...v0.109.0 Features api: add support for Managed Agents deployments and environment variable credentials (47633bf)
0.108.0 (2026-06-09) Full Changelog: v0.107.1...v0.108.0 Features api: add support for claude-mythos-5 and claude-fable-5, with support for server-side fallbacks on refusal (6b76649) client: adds client-side fallbacks…
0.107.1 (2026-06-07) Full Changelog: v0.107.0...v0.107.1 Bug Fixes foundry: send x-api-key header for API-key auth (#62) (1338141), closes #1661
0.107.0 (2026-06-06) Full Changelog: v0.106.0...v0.107.0 Features api: small updates to Managed Agents types (72923f9)
0.106.0 (2026-06-05) Full Changelog: v0.105.2...v0.106.0 Features api: mark Claude Opus 4.1 as deprecated (85068cc) Bug Fixes client: make Foundry client copy() and with_options() work (94146ac) transform schema…
0.105.2 (2026-05-29) Full Changelog: v0.105.1...v0.105.2
0.105.1 (2026-05-29) Full Changelog: v0.105.0...v0.105.1 Chores internal: use Trusted Publishing for PyPI releases (1d04fc5)
0.105.0 (2026-05-28) Full Changelog: v0.104.1...v0.105.0 Features api: Add support for claude-opus-4-8, mid-conversation system blocks, and usage.output_tokens_details (f18b014) support custom file size caps (#1825)…
0.104.1 (2026-05-21) Full Changelog: v0.104.0...v0.104.1 Bug Fixes streaming: carry encrypted_content through beta compaction accumulator (#1821) (f7a720c)
0.104.0 (2026-05-21) Full Changelog: v0.103.1...v0.104.0 Features api: Add support for thinking-token-count beta for estimated tokens in thinking block deltas when streaming (80d0fdf)
0.103.1 (2026-05-19) Full Changelog: v0.103.0...v0.103.1 Bug Fixes runner: skip tool calls SessionToolRunner does not own (#1817) (9425c6a)
0.103.0 (2026-05-19) Full Changelog: v0.102.0...v0.103.0 Features client: Add support for self-hosted sandboxes in CMA with sandbox helpers (e5625b0)
0.102.0 (2026-05-13) Full Changelog: v0.101.0...v0.102.0 Features api: Add BetaManagedAgentsSearchResultBlock types (3681f10) api: Add support for cache diagnostics beta (db51c6c) internal/types: support eagerly…
0.101.0 (2026-05-11) Full Changelog: v0.100.0...v0.101.0 Features aws: Add AWS client for Claude Platform on AWS (1e70e3a) Bug Fixes client: add missing f-string prefix in file type error message (06d109a) Chores…
0.100.0 (2026-05-06) Full Changelog: v0.99.0...v0.100.0 Features api: add support for Managed Agents multiagents and outcomes, webhooks, vault validation (3b3deee) Bug Fixes api: Adjust webhook configuration (8c3339e)
0.99.0 (2026-05-05) Full Changelog: v0.98.1...v0.99.0 Features client: allow targeting a workspace for OIDC federation token exchange (4ba8067)
0.98.1 (2026-05-04) Full Changelog: v0.98.0...v0.98.1 Chores fix typo in example (#1754) (de8ba13)
0.98.0 (2026-05-04) Full Changelog: v0.97.0...v0.98.0 Features api: improve Managed Agents APIs (7faf393) client: add Workload Identity Federation, interactive OAuth, and auth profiles (6458bcc) support setting headers…
0.97.0 (2026-04-23) Full Changelog: v0.96.0...v0.97.0 Features api: CMA Memory public beta (fc30ebe) Bug Fixes api: fix errors in api spec (f946de8) api: restore missing features (72212ab) Performance Improvements…
0.96.0 (2026-04-16) Full Changelog: v0.95.0...v0.96.0 Features api: add claude-opus-4-7, token budgets and user_profiles (0aa2a0d) Chores ci: remove release-doctor workflow (1d9add3)
0.95.0 (2026-04-14) Full Changelog: v0.94.1...v0.95.0 Features api: mark Sonnet and Opus 4 as deprecated (0c1e773) bedrock: use auth header for mantle client (#1644) (3b93090)
0.94.1 (2026-04-13) Full Changelog: v0.94.0...v0.94.1 Bug Fixes streaming: add missing events (c6a06d8)
0.94.0 (2026-04-10) Full Changelog: v0.93.0...v0.94.0 Features vertex eu region (#1658) (b7e157d) Bug Fixes ensure file data are only sent as 1 parameter (837b25b) Documentation improve examples (48089fd) update…
0.93.0 (2026-04-09) Full Changelog: v0.92.0...v0.93.0 Features api: Add beta advisor tool (4297dca)
0.92.0 (2026-04-08) Full Changelog: v0.91.0...v0.92.0 Features api: add support for Claude Managed Agents (5b879a7)
0.91.0 (2026-04-07) Full Changelog: v0.90.0...v0.91.0 Features client: Create Bedrock Mantle client (#1616) (fd195a2)
0.90.0 (2026-04-07) Full Changelog: v0.89.0...v0.90.0 Features api: Add support for claude-mythos-preview (fc7ddd8) Bug Fixes client: preserve hardcoded query params when merging with user params (32d35e0)
0.89.0 (2026-04-03) Full Changelog: v0.88.0...v0.89.0 Features vertex: add support for US multi-region endpoint (4e732da) Bug Fixes client: preserve hardcoded query params when merging with user params (e7f4a3c) Chores…
0.88.0 (2026-04-01) Full Changelog: v0.87.0...v0.88.0 Features api: add structured stop_details to message responses (fd82d6b) bedrock api key auth (#1623) (a95a3fc) prepare aws package (#1615) (6875fab) Chores tests…
0.87.0 (2026-03-31) Full Changelog: v0.86.0...v0.87.0 Features client: add error type field to APIStatusError (#1587) (dd563c0) internal: implement indices array format for query and form serialization (11a6244) Bug…
0.86.0 (2026-03-18) Full Changelog: v0.85.0...v0.86.0 Features add support for filesystem memory tools (#1247) (235d218) api: manual updates (86dbe4a) api: manual updates (45d9cc0) Bug Fixes…