xAI Rate Limits by Tier
What are xAI's API rate limits?
xAI's entry tier (Default) allows an unpublished number of requests/min and an unpublished number of tokens/min for documented default/model family. Limits scale up through Default as cumulative spend and account age increase — see the full table below, verified 2026-08-15.
Verified 2026-08-15 — source
Limits by tier
| Tier | Qualification | Model class | RPM | TPM | RPD | Concurrent |
|---|---|---|---|---|---|---|
| Default | Account/project limit shown in the xAI console | documented default/model family | — | — | — | — |
— means not documented by xAI, never a guess.
What this means for your workload
Classification at volume: 116 calls/min and 60,320 tokens/min at the production profile.
This provider publishes no numeric cap for this workload; check the account console before launch.
Response headers
retry-after | Seconds to wait before retrying, when supplied with a 429 |
rate-limit response headers | Provider-specific remaining and reset counters when documented |
When you exceed the limit
xAI returns HTTP 429.
Use the limit shown for the selected model and project, then back off.
FAQ
What happens when I exceed xAI's rate limit?
xAI returns HTTP 429. Use the limit shown for the selected model and project, then back off.
How do I request a rate limit increase on xAI?
Request one from the account dashboard: https://console.x.ai