announcement aidev BREAKING SIG 4/5

OpenRouter: Responses API GA, breaking removal of beta.responses namespace

OpenRouter's Responses API is now GA. The beta.responses OpenAPI tag and SDK namespace are removed. Raw HTTP callers and OpenAI-compatible clients need no changes. SDK users have a deprecated alias (beta.responses) that still works; its removal will be announced with a sunset date. New enum values added to ProviderName, ProviderResponse, and BYOKProviderSlug. A new claude-on-aws property was added to ProviderOptions.

PUBLISHED2026-07-25
OBSERVED2026-08-21
AGE1mo
SOURCES1
  • POST /responses: tags: beta.responses property removed — the Responses API is now GA
  • Migration for HTTP clients: no action required — POST /api/v1/responses and its schemas are unchanged
  • Migration for SDK users: the canonical namespace is responses (client.responses.send()); beta.responses namespace keeps working as a deprecated alias with a future sunset date
  • $.tags: beta.responses object removed from the specification
  • ProviderName enum: new value added
  • ProviderOptions: new claude-on-aws property added to audio/speech, audio/transcriptions, images, and videos endpoints
  • ProviderResponse enum: new value added
  • BYOKProviderSlug enum: new value added to BYOK endpoints
  • MessagesStartEvent: provider property updated
  • GET /byok: provider parameter updated
breakingapi-change

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