Anthropic Python SDK

AI

The official Python library for the Anthropic API.

Latest v0.120.2 · by AnthropicWebsiteanthropics/anthropic-sdk-python

Release activity

Release activity — 10 releases across 9 days since Jun 30, 2026. Each cell is one day; darker means more releases that day. Nothing is recorded before Jun 30, 2026. Older weeks are hidden at this screen width.
MayJunJulAug
SundayNo releases on Jul 5, 2026No releases on Jul 12, 2026No releases on Jul 19, 2026No releases on Jul 26, 2026No releases on Aug 2, 2026
MondayNo releases on Jul 6, 2026No releases on Jul 13, 2026No releases on Jul 20, 2026No releases on Jul 27, 2026No releases on Aug 3, 2026
Tuesday1 release on Jun 30, 2026No releases on Jul 7, 2026No releases on Jul 14, 20261 release on Jul 21, 20262 releases on Jul 28, 2026No releases on Aug 4, 2026
Wednesday1 release on Jul 1, 2026No releases on Jul 8, 2026No releases on Jul 15, 20261 release on Jul 22, 2026No releases on Jul 29, 2026No releases on Aug 5, 2026
Thursday1 release on Jul 2, 2026No releases on Jul 9, 20261 release on Jul 16, 20261 release on Jul 23, 2026No releases on Jul 30, 2026No releases on Aug 6, 2026
FridayNo releases on Jul 3, 2026No releases on Jul 10, 2026No releases on Jul 17, 20261 release on Jul 24, 2026No releases on Jul 31, 2026No releases on Aug 7, 2026
SaturdayNo releases on Jul 4, 2026No releases on Jul 11, 2026No releases on Jul 18, 2026No releases on Jul 25, 2026No releases on Aug 1, 2026

10 releases since Jun 30, 2026, busiest day 2

Changelog

v0.120.0

Added 3
  • Add claude-opus-5 model
  • Add tool addition/removal blocks and tool_change events
  • Expand client-side fallback credit token types and add server-side fallbacks default option
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 token types and add server-side fallbacks default option (bf4e31c)
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How v0.120.0 went

v0.119.0

Added 1
  • Add new stop reason 'model_context_window_exceeded'
Fixed 1
  • Handle binary files in agent toolset read/edit
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)
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How v0.119.0 went

v0.118.0

Added 1
  • Add support for Managed Agents model effort, initial session events, and threads delta streaming
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)
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How v0.118.0 went

v0.117.1

Added 1
  • Add support for new refusal category
Fixed 1
  • Handle credentials correctly when using AnthropicAWS.copy()
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 updates (b14f94c)
  • deps: bump http-snapshot to 0.1.9 (#275) (434b657)
  • deps: pin httpx_aiohttp major version (#271) (924487f)
  • docs: small updates (c48db8b)
  • docs: small updates (755c06c)
  • internal: codegen related update (a4fbecf)
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How v0.117.1 went

v0.117.0

Added 2
  • Add support for dreaming
  • Add support for MCP Tunnels
Fixed 1
  • Keep credential material out of traceback frame locals via SecretStr
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 frame locals via SecretStr (aa93a4d)
Chores
  • docs: small updates to field descriptions (75d8dcc)
  • docs: update model example (a57e30a)
  • docs: updates to descriptions and examples (e1535b6)
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How v0.117.0 went

v0.116.0

Added 1
  • Add agent-memory-2026-07-22 beta header to API
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)
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How v0.116.0 went

v0.115.1

Removed 1
  • Remove nonfunctional types from the SDK
0.115.1 (2026-07-01)

Full Changelog: v0.115.0...v0.115.1

Chores
  • api: remove some nonfunctional types from the SDKs (5e7c431)
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How v0.115.1 went

v0.115.0

Added 5
  • Add support for Managed Agents event delta streaming
  • Add support for agent overrides
  • Add support for reverse pagination
  • Add support for vault credential injection scoping
  • Add support for agent and deployment webhook events
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 deployment webhook events (8c23f7e)
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How v0.115.0 went

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