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workflows: creation rate limit #20636

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Mar 8, 2025
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workflows: creation rate limit #20636

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3 changes: 3 additions & 0 deletions src/content/docs/workflows/reference/limits.mdx
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Expand Up @@ -26,6 +26,7 @@ Many limits are inherited from those applied to Workers scripts and as documente
| Maximum steps per Workflow [^5] | 1024 [^1] | 1024 [^1] |
| Maximum Workflow executions | 100,000 per day [shared with Workers daily limit](/workers/platform/limits/#worker-limits) | Unlimited |
| Concurrent Workflow instances (executions) per account | 25 | 4500 [^1] |
| Maximum Workflow instance creation rate | 100 per 10 seconds [^1][^6] | 100 per 10 seconds [^1][^6] |
| Maximum number of [queued instances](/workflows/observability/metrics-analytics/#event-types) | 10,000 [^1] | 100,000 [^1] |
| Retention limit for completed Workflow state | 3 days | 30 days [^2] |
| Maximum length of a Workflow ID [^4] | 64 characters | 64 characters |
Expand All @@ -40,4 +41,6 @@ Many limits are inherited from those applied to Workers scripts and as documente

[^5]: `step.sleep` do not count towards the max. steps limit

[^6]: Workflows will return a HTTP 429 rate limited error if you exceed the rate of new Workflow instance creation.

<Render file="limits_increase" product="workers" />