Cerebras Rate Limits by Tier
What are Cerebras's API rate limits?
Cerebras's entry tier (Free) allows an unpublished number of requests/min and an unpublished number of tokens/min for documented default/model family. Limits scale up through Production as cumulative spend and account age increase — see the full table below, verified 2026-08-14.
Limits by tier
| Tier | Qualification | Model class | RPM | TPM | RPD | Concurrent |
|---|---|---|---|---|---|---|
| Free | Free account quota | documented default/model family | — | — | — | — |
| Production | Account quota shown in console | documented default/model family | — | — | — | — |
— means not documented by Cerebras, 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
Cerebras returns HTTP 429.
Reduce concurrency and consult the account quota.
FAQ
What happens when I exceed Cerebras's rate limit?
Cerebras returns HTTP 429. Reduce concurrency and consult the account quota.
How do I request a rate limit increase on Cerebras?
Request one from the account dashboard: https://cloud.cerebras.ai
Batch 48 · cerebras rate-limit decision and evidence modules. Surface verification: 2026-08-14. These are dated, route-local fixtures, not live quota claims.
Cerebras organization-project ceiling resolver
Frozen cerebras evidence board: one project · two projects under one organization · project below/above organization · free/developer · enterprise override. Formula / decision rule: effective limit = min(project, organization) where both are known
| Frozen fixture | Inputs and observation | Formula / boundary | State |
|---|---|---|---|
batch48-cerebras-m1-r1one project · two projects under one organization | principal/account=joined; endpoint=joined; model/pool=joined; bucket/window=joined; observed=2026-08-14 The primary identity and product joins are present for this frozen fixture. | effective limit = min(project, organization) where both are known A missing provider, product, account, endpoint, model, bucket, or time-window join fails closed; no value is copied across routes. | PASS WITH SCOPE — frozen observation only. |
batch48-cerebras-m1-r2project below/above organization | request/response/error=joined; limit/remaining/reset=observed; retry identity=joined; region=joined The response evidence is usable only for the named bucket and time window; no neighboring provider is borrowed. | effective limit = min(project, organization) where both are known A missing provider, product, account, endpoint, model, bucket, or time-window join fails closed; no value is copied across routes. | PASS WITH LIMIT — dated evidence only. |
batch48-cerebras-m1-r3free/developer · enterprise override | workload=joined; prompt/output reserve=explicit; shared pool=declared; unknown=Unavailable; owner=platform Admission or recovery is withheld where the account-specific value or side-effect identity is absent. | effective limit = min(project, organization) where both are known A missing provider, product, account, endpoint, model, bucket, or time-window join fails closed; no value is copied across routes. | UNAVAILABLE — live owner evidence required. |
Provenance: Frozen Batch 48 cerebras fixture: module 1 observation and calculation. First-party evidence checked 2026-08-14; unresolved joins fail closed. Surface verification date: 2026-08-14. Cerebras Inference docs (first-party source)
Cerebras rate-header and reset ledger
Frozen cerebras evidence board: normal response · request-day near-limit · token-minute near-limit · simultaneous exhaustion · 429 · missing header · malformed reset. Formula / decision rule: reset timestamp = observation time + provider reset unit; malformed or missing reset → Unavailable
| Frozen fixture | Inputs and observation | Formula / boundary | State |
|---|---|---|---|
batch48-cerebras-m2-r1normal response · request-day near-limit | principal/account=joined; endpoint=joined; model/pool=joined; bucket/window=joined; observed=2026-08-14 The primary identity and product joins are present for this frozen fixture. | reset timestamp = observation time + provider reset unit; malformed or missing reset → Unavailable A missing provider, product, account, endpoint, model, bucket, or time-window join fails closed; no value is copied across routes. | PASS WITH SCOPE — frozen observation only. |
batch48-cerebras-m2-r2token-minute near-limit · simultaneous exhaustion | request/response/error=joined; limit/remaining/reset=observed; retry identity=joined; region=joined The response evidence is usable only for the named bucket and time window; no neighboring provider is borrowed. | reset timestamp = observation time + provider reset unit; malformed or missing reset → Unavailable A missing provider, product, account, endpoint, model, bucket, or time-window join fails closed; no value is copied across routes. | PASS WITH LIMIT — dated evidence only. |
batch48-cerebras-m2-r3429 · missing header · malformed reset | workload=joined; prompt/output reserve=explicit; shared pool=declared; unknown=Unavailable; owner=platform Admission or recovery is withheld where the account-specific value or side-effect identity is absent. | reset timestamp = observation time + provider reset unit; malformed or missing reset → Unavailable A missing provider, product, account, endpoint, model, bucket, or time-window join fails closed; no value is copied across routes. | UNAVAILABLE — live owner evidence required. |
Provenance: Frozen Batch 48 cerebras fixture: module 2 observation and calculation. First-party evidence checked 2026-08-14; unresolved joins fail closed. Surface verification date: 2026-08-14. Cerebras Inference docs (first-party source)
Cerebras burst-and-long-context admission board
Frozen cerebras evidence board: 100 short chats · eight long prompts · four long outputs · 16 strict extractions · 64-request burst · retry wave. Formula / decision rule: completion coverage = admitted / declared; inference speed is not quota capacity
| Frozen fixture | Inputs and observation | Formula / boundary | State |
|---|---|---|---|
batch48-cerebras-m3-r1100 short chats · eight long prompts | principal/account=joined; endpoint=joined; model/pool=joined; bucket/window=joined; observed=2026-08-14 The primary identity and product joins are present for this frozen fixture. | completion coverage = admitted / declared; inference speed is not quota capacity A missing provider, product, account, endpoint, model, bucket, or time-window join fails closed; no value is copied across routes. | PASS WITH SCOPE — frozen observation only. |
batch48-cerebras-m3-r2four long outputs · 16 strict extractions | request/response/error=joined; limit/remaining/reset=observed; retry identity=joined; region=joined The response evidence is usable only for the named bucket and time window; no neighboring provider is borrowed. | completion coverage = admitted / declared; inference speed is not quota capacity A missing provider, product, account, endpoint, model, bucket, or time-window join fails closed; no value is copied across routes. | PASS WITH LIMIT — dated evidence only. |
batch48-cerebras-m3-r364-request burst · retry wave | workload=joined; prompt/output reserve=explicit; shared pool=declared; unknown=Unavailable; owner=platform Admission or recovery is withheld where the account-specific value or side-effect identity is absent. | completion coverage = admitted / declared; inference speed is not quota capacity A missing provider, product, account, endpoint, model, bucket, or time-window join fails closed; no value is copied across routes. | UNAVAILABLE — live owner evidence required. |
Provenance: Frozen Batch 48 cerebras fixture: module 3 observation and calculation. First-party evidence checked 2026-08-14; unresolved joins fail closed. Surface verification date: 2026-08-14. Cerebras Inference docs (first-party source)