Rate Limits
NanoGPT enforces a mix of global throughput limits and (optionally) per-key daily limits.Global Throughput Limits (Per-Second)
The NanoGPT API currently imposes a limit of 25 requests per second. If you need a higher limit, email support@nano-gpt.com with:- which model(s) you need
- your target RPS / peak traffic patterns
- whether requests are streaming
Per-Key Daily Limits (Optional)
NanoGPT supports per-API-key daily limits to help you cap usage and spend. You can set these when creating or editing an API key in the NanoGPT dashboard. Available limits:
Notes:
- Limits are enforced per API key, not per user. Multiple keys have independent counters.
- If a limit is not set, that dimension is unlimited for the key.
- Counters reset at 00:00 UTC every day.
- USD/day uses cost estimation at request time. Actual cost can differ slightly, so the effective cap is approximate.
- Subscription-covered requests (models included in your subscription plan) can bypass the USD/day limit since no balance is spent, but they still count toward RPD.
When A Daily Limit Is Exceeded
When a per-key daily limit is exceeded, NanoGPT returns an OpenAI-compatible429 error and includes a Retry-After header (seconds until the next reset at midnight UTC).
Example response: