OpenAI API 6 limits oldest check 27 Aug 2026 6 within 30 days
Quota reset forecaster
Check documented reset boundaries. Your account notice takes priority.
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Published limits
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| Plan | Limit | Window | When exhausted | Evidence |
|---|---|---|---|---|
| Tier 1 | 500 RPM / 500,000 TPM GPT-5.5 standard limits | per minute | 429 until capacity replenishes | ● Documented |
| The public GPT-5.5 model page publishes model-specific limits by usage tier. | ||||
| Tier 2 | 5,000 RPM / 1,000,000 TPM GPT-5.5 standard limits | per minute | 429 until capacity replenishes | ● Documented |
| Published GPT-5.5 Tier 2 standard limits. | ||||
| Tier 3 | 5,000 RPM / 2,000,000 TPM GPT-5.5 standard limits | per minute | 429 until capacity replenishes | ● Documented |
| Published GPT-5.5 Tier 3 standard limits. | ||||
| Tier 4 | 10,000 RPM / 4,000,000 TPM GPT-5.5 standard limits | per minute | 429 until capacity replenishes | ● Documented |
| Published GPT-5.5 Tier 4 standard limits. | ||||
| Tier 5 | 15,000 RPM / 40,000,000 TPM GPT-5.5 standard limits | per minute | 429 until capacity replenishes | ● Documented |
| Published GPT-5.5 Tier 5 standard limits. | ||||
| All tiers | Model and tier specific Rate-limit scope | varies by model | Check the model page and account limits | ● Documented |
| OpenAI now publishes per-model tables publicly; effective limits still depend on usage tier and may be visible in the account console. | ||||