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)
2.50.0 (2026-07-28) Full Changelog: v2.49.0...v2.50.0 Features api: transcription model updates (fd57393) Bug Fixes audio: restore transcription keyword overload (713a262)
2.49.0 (2026-07-27) Full Changelog: v2.48.0...v2.49.0 Features require Python 3.10 and automate version reviews (#3537) (d4c151d)
2.48.0 (2026-07-23) Full Changelog: v2.47.0...v2.48.0 Features api: accept None for prompt_cache_key/safety_identifier (36820e6) api: add support for spend_limit admin apis (1ff13af)
2.47.0 (2026-07-21) Full Changelog: v2.46.0...v2.47.0 Features client: Add experimental runtime support for HTTPX2 clients (#3524) (317260c) stlc: configurable CI runner and private-production-repo support in workflow templates (4303e97) Bug Fixes deps: require patched aiohttp on Python 3.10+ (#3515) (d4dceb2)
2.46.0 (2026-07-17) Full Changelog: v2.45.0...v2.46.0 Features api: /organization/projects/{project_id}/service_accounts/{service_account_id}/api_keys" endpoint (5a00941) api: add owner_project_access to APIKeyListParams (f589d04) api: manual updates (980f176) api: manual updates (2eae984) Bug Fixes api: preserve generated type compatibility (00bd72a) api: remove beta annotation compatibility alia…
2.45.0 (2026-07-09) Full Changelog: v2.44.0...v2.45.0 Features api: gpt-5.6-sol updates (039d1fe) Bug Fixes api: restore beta resource accessors (2dfc130) Chores retrigger release automation (7b61351)
2.44.0 (2026-06-24) Full Changelog: v2.43.0...v2.44.0 Bug Fixes auth: prioritize first auth header (797e336)
2.43.0 (2026-06-17) Full Changelog: v2.42.0...v2.43.0 Features api: update OpenAPI spec or Stainless config (2254235)
2.42.0 (2026-06-16) Full Changelog: v2.41.1...v2.42.0 Features api: admin spend_alerts (6134198) api: manual updates (f337bf4) api: update OpenAPI spec or Stainless config (7015158) Build System fix release workflow permissions (#3389) (a526ee8) Use CI environment for examples API key (#3394) (d64d811)
2.41.1 (2026-06-05) Full Changelog: v2.41.0...v2.41.1 Build System Remove scheduled release workflow trigger (#3366) (2a91011)
2.41.0 (2026-06-03) Full Changelog: v2.40.0...v2.41.0 Features api: responses.moderation and chat_completions.moderation (87e46c2)
2.40.0 (2026-06-01) Full Changelog: v2.39.0...v2.40.0 Features api: Add Amazon Bedrock Responses support Bug Fixes api: allow setting bedrock api keys on the client directly (4d5bfde)
2.39.0 (2026-06-01) Full Changelog: v2.38.0...v2.39.0 Features api: workload identity in audit logs, additional_tools item in responses, fix ActionSearch.query to be optional. (ab60d7a)
2.38.0 (2026-05-21) Full Changelog: v2.37.0...v2.38.0 Features api: api update (33d1d01) api: manual updates (a21700a) api: update OpenAPI spec or Stainless config (00265c5) Chores api: docs updates (ee10152) check release PR custom code sync (2638779) remove release automation trigger (bd6eea5) trigger release automation (f62d082)
2.37.0 (2026-05-13) Full Changelog: v2.36.0...v2.37.0 Features api: add service_tier parameter to responses compact method (625827c) internal/types: support eagerly validating pydantic iterators (7e527bc) Remove unnecessary client_id when using workload identity provider for auth (c39ea8d) Bug Fixes client: add missing f-string prefix in file type error message (c85ebd9)
2.36.0 (2026-05-07) Full Changelog: v2.35.1...v2.36.0 Features api: manual updates (13c639c) api: realtime 2 (8fe0ab8)