Limits

Limits that apply to authoring, deploying, and running Workflows are detailed below.

Many limits are inherited from those applied to Workers scripts and as documented in the Workers limits documentation.

Feature	Workers Free	Workers Paid
Workflow class definitions per script	1MB max script size per Worker size limits	10MB max script size per Worker size limits
Total scripts per account	100	500 (shared with Worker script limits
Compute time per Workflow	10 seconds	30 seconds of active CPU time
Duration (wall clock) per step	Unlimited	Unlimited - e.g. waiting on network I/O calls or querying a database
Maximum persisted state per step	1MiB (2^20 bytes)	1MiB (2^20 bytes)
Maximum state that can be persisted per Workflow instance	100MB	1GB
Maximum step.sleep duration	365 days (1 year) 1
Maximum steps per Workflow	256 1
Maximum Workflow executions	100,000 per day shared with Workers daily limit	Unlimited
Concurrent Workflow instances (executions)	25	100 1
Retention limit for completed Workflow state	3 days	30 days 2
Maximum length of a Workflow ID	64 bytes

Need a higher limit?

To request an increase to a limit, complete the Limit Increase Request Form ↗. If the limit can be increased, Cloudflare will contact you with next steps.

Footnotes

1. This limit will be reviewed and revised during the open beta for Workflows. Follow the Workflows changelog for updates. ↩ ↩² ↩³

2. Workflow state and logs will be retained for 3 days on the Workers Free plan and for 7 days on the Workers Paid plan. ↩