Ctrl+Z Therapy
CasesQuick answersGuides10-minute checklistHow we testCartoonSend it in

OpenAI API error 429? Check your credits and spend limit first

Ship ItChecked against the official source

Source checked 4 Oct 2026 · Published 21 Oct 2026 · Last reviewed 21 Oct 2026 · By Ctrl+Z Therapy (how we test)

The short answer

Not always too many requests. OpenAI's error docs list several 429s: credit_balance_exhausted means your organization's prepaid credit balance is depleted, and other codes mean a project or organization spend limit was reached. OpenAI says "Retrying billing, spend, or quota errors won't restore API access." You add credits, or raise the limit.

What to do

  1. Read the error code. Credits ran out? Add credits. Project or organization spend limit reached? Raise the limit. Retrying won't fix either.
  2. A real rate limit is different: if a Retry-After header is present, wait at least as long as it specifies before trying again.
  3. To stop a runaway bill, set a hard spend limit on your project: Project settings, Limits, then Spend. Set a monthly spend limit, turn on Enforce a hard limit, and Save.

Good to know

  • "Spend alerts do not enforce a cap." An alert alone won't stop anything.
  • A hard limit can interrupt production traffic, so don't set it too low.

Source

Checked on 4 Oct 2026. Prices, limits and settings change, so check the source before you rely on them.

Related