---
description: Limits for concurrent Dynamic Worker requests.
title: Limits
image: https://developers.cloudflare.com/og-docs.png
---

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# Limits

Last updated Aug 28, 2026|Copy as Markdown|[View as Markdown](https://60eb615a.previews.developers.cloudflare.com/dynamic-workers/platform/limits/index.md)|[Agent setup](https://60eb615a.previews.developers.cloudflare.com/agent-setup/)

Cloudflare limits the number of distinct Dynamic Workers with in-flight requests. Multiple in-flight requests to the same Dynamic Worker count as one toward this limit.

| Context                                                                                | Concurrent Dynamic Workers |
| -------------------------------------------------------------------------------------- | -------------------------- |
| Worker request                                                                         | 4                          |
| [Durable Object](https://60eb615a.previews.developers.cloudflare.com/durable-objects/) | 10 (previously 4)          |

In a Worker, each request has its own input/output (I/O) context. Each request can therefore have up to four distinct Dynamic Workers with in-flight requests.

A Durable Object shares one I/O context across all concurrent requests to the same object. Those requests can collectively have up to ten distinct Dynamic Workers with in-flight requests. To set lower CPU time or subrequest limits, refer to [Custom resource limits](https://60eb615a.previews.developers.cloudflare.com/dynamic-workers/usage/limits/).

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