3.51.0 (2026-08-14)
Features
- api: Add model constants for Daybreak and gpt-5.6-cyber (df00e97)
- api: add WebSocket stream IDs (#776) (0b6316e)
- api: add workload identity access token issued event (#766) (c61af30)
- api: deprecate Sora video APIs (#775) (602c5e4)
- api: Ultrafast tier, structured MCP and websocket errors, separate websocket events (#789) (f8b63fd)
Bug Fixes
- api: Add model constants for Daybreak and gpt-5.6-cyber (#763) (df00e97)
- api: clarify audio upload metadata requirements (#764) (e75e3aa)
- handle ignored errors in generated and runtime Go code (#778) (ba5f249)
- recover approved Go correctness analyzers after stacked merges (#782) (a98cf53)
Chores
- api: No public API change; update file header comments (#755) (d0a42cc)
- enforce Go lint suppression hygiene (#771) (7a3bb22)
- enforce gofmt across the repository (#770) (41b2f1f), closes #771
- remove Stainless attribution and infrastructure (#765) (9b3d395)
Documentation
- api: describe response stream event unions (#783) (4cc4021)
- define Go code quality policy (#767) (4119aa3)
- define Go ignored-error handling policy (#777) (1941f81)