Cerebras API free-trial rate limit: the limit, when it resets, and the error you'll see
Cerebras's own answer, read 2026-10-10: Is there a permanently free tier? No. The numbers below are trial limits, not a free tier.
The trial limit
Free Trial tab of the limits table
| Model | RPM | Uncached TPM | Total TPM | TPH | TPD |
|---|
| gpt-oss-120b | 5 | 30K | 90K | 1M | 1M |
| qwen-3.8-27b | 5 | 30K | 90K | 1M | 1M |
Source: inference-docs.cerebras.ai, read 2026-10-10.
When it resets
your capacity replenishes continuously rather than resetting at fixed intervals
Source: inference-docs.cerebras.ai, read 2026-10-10.
The error your agent will see
HTTP status: 429.
No response body text is documented by Cerebras. What its docs say:
The error message will indicate whether your uncached or total token limit was exceeded.
Source: inference-docs.cerebras.ai, read 2026-10-10.
Our row
Our dated entry for Cerebras.
Other free inference APIs if you're rate-limited
Facts as read on 2026-10-10. Limits change: check the linked source before relying on a number.