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 29, 2026
May 29, 2026

Product changes

  • Preset ID in generation responses — The GET /api/v1/generation endpoint now returns preset_id when a preset was used, letting you trace which preset produced each completion. Docs
  • Fixed: activity overview date range — The activity overview widget no longer breaks when selecting a date range exceeding 365 days.
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