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We set no request allowance and no monthly cap. Every limit on this page is a ceiling on how much runs at once.

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On your own keys

Only one limit applies. Your organization can run a fixed number of flex races at a time. Past that number we run the request on the standard tier, so you lose the discount, not the answer.

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On Managed Keys

  • Concurrency. Your organization can run a fixed number of managed requests at a time. Past it you get 429 rate_limit_exceeded with a Retry-After.
  • Shared pools. Workers AI and Foundry serve everyone from one pool, so each organization gets a per-minute rate there. Past it you get the same 429.

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On every organization

We count requests per minute three ways (per organization, per key, and per IP). A fourth counter tracks failed auth attempts per IP. A body over 50 MB returns 413 request_too_large. Back off for the seconds in Retry-After. GET /v1/limits reports every ceiling on this page next to the spending ones. See Spending Limits.