For AI agents: a documentation index is available at the root level at /llms.txt and /llms-full.txt. Append /llms.txt to any URL for a page-level index, or .md for the markdown version of any page.
ModelsChatRankingsDocs
DocsAPI ReferenceClient SDKsAgent SDKCookbookChangelog
DocsAPI ReferenceClient SDKsAgent SDKCookbookChangelog
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ModelsChatRankingsDocs

Changelog

A daily log of product changes, improvements, and new model releases on OpenRouter
May 16, 2026
May 16, 2026

Product changes

  • Bring-your-own-key management API — New REST endpoints for programmatically listing, retrieving, creating, updating, and deleting BYOK credentials across workspaces via management key authentication.
  • Observability destinations management API — New REST endpoints for listing, retrieving, creating, updating, and deleting observability destinations (Datadog, Langfuse, LangSmith, and more) via management key authentication.
  • Fixed: dashboard growth percentages exceeding display bounds — Very large growth percentages on the activity dashboard are now capped at >999% for readability.
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