3.3.1 (2026-08-19)

Bug Fixes

• deps: update dependencies with published security fixes (#3680) (53aa4fc)

Chores

• build: migrate to uv (#3653) (b37e85d)
• deps: remove jsonschema and unused fixture-validation dependencies (0dfdfdd)
• lock the repository Pyright toolchain (#3678) (3079be2)
• run the mock server from locked local tooling (#3679) (370fcc6)

Refactors

• deps: use the standard library for platform detection (d5b0065)

Build System

• replace the external README metadata hook (e673ca8)

3.3.0 (2026-08-18)

Features

• support named data-residency endpoints (#3646) (11ee914)

Bug Fixes

• require patched optional networking dependencies (#3651) (40e56de)

Chores

• remove unused dependencies and pin build tooling (#3650) (eee8e4a)

Documentation

• strengthen Python SDK security contribution guidance (#3639) (6577709)

3.2.0 (2026-08-17)

Features

• add Bedrock Runtime endpoint support (SDK-290) (#3623) (86267d2)
• api: Add shell call streaming events and new service/image types (#3635) (ff14a33)

3.1.0 (2026-08-14)

Features

• api: add WebSocket stream IDs (#3612) (d9029e3)
• api: add workload identity access token issued event (#3601) (df274d4)
• api: deprecate Sora video APIs (#3610) (721cb1c)
• api: Ultrafast tier, structured MCP and websocket errors, separate websocket events (#3617) (f38355e)

Chores

• remove Stainless attribution and infrastructure (#3599) (a1eeab5)

3.0.0 (2026-08-12)

⚠ BREAKING CHANGES

• api: HTTPX2 is now the default HTTP client, and httpx is no longer installed automatically. Applications using custom HTTPX clients, transports, or configuration objects must migrate to their HTTPX2 equivalents or use the temporary, runtime-only legacy HTTPX escape hatch. See the HTTPX2 migration guide.

Features

• api: migrate to HTTPX2 (#3594)

2.54.0 (2026-08-11)

Features

• api: Add new Responses model identifiers (#3595) (0652787)

Bug Fixes

• api: clarify audio upload metadata requirements (#3596) (28888f9)

Chores

• api: Update generated-file header attribution to Castiron (#3583) (ea17fda)

2.53.0 (2026-08-03)

Features

• api: Add gpt-5.5 and tool name/namespace to Responses types (#3569) (dd1202d)

Bug Fixes

• ci: avoid NumPy source builds and duplicate HTTPX coverage (#3573) (b58332f)

2.52.1 (2026-07-31)

Full Changelog: v2.52.0...v2.52.1

Chores

• ci: pin setup-uv v5 to its underlying commit (#3560) (cbdc98b)

2.52.0 (2026-07-31)

Full Changelog: v2.51.0...v2.52.0

Features

• api: content provenance checks (1d6c118)

Bug Fixes

• client: honor Retry-After delays up to two minutes (#3555) (7fa7946)

Documentation

• add API-key mTLS HTTP client recipes (#3552) (7a3d5e4)

2.51.0 (2026-07-30)

Full Changelog: v2.50.0...v2.51.0

Features

• api: fast tier (8808ed2)

Bug Fixes

• api: add fast tier to helper methods (6064126)