---
description: Account, stream, record, and consumer limits for Cloudflare K2.
title: Limits
image: https://developers.cloudflare.com/k2/platform/limits/og.png?v=ac2d822337ad8e50
---

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> Documentation Index  
> Fetch the complete documentation index at: https://developers.cloudflare.com/k2/llms.txt  
> Use this file to discover all available pages before exploring further.

# Limits

Last updated Oct 2, 2026|Copy as Markdown| [View as Markdown](https://developers.cloudflare.com/k2/platform/limits/index.md)| [Agent setup](https://developers.cloudflare.com/agent-setup/)

Need a higher limit?

To request an adjustment to a limit, complete the [Limit Increase Request Form ↗︎](https://forms.gle/eX6pXvit1wBv77Yw5). If the limit can be increased, Cloudflare will contact you with next steps.

## Account limits

During the public beta, each account can store up to 10 GB across all streams.

## Streams

| Feature | Limit |
| --- | --- |
| Maximum streams per account | 20 |
| Minimum retention period | 1 hour (`3600` seconds) |
| Maximum retention period | 30 days (`2592000` seconds) |
| Default retention period | 7 days (`604800` seconds) |

Higher retention limits are available by request.

## Produce records

| Feature | Limit |
| --- | --- |
| Maximum request size | 5 MB (5,000,000 bytes) |
| Maximum record size | \~1 MB (1,000,000 bytes) |
| Maximum headers per record | 32 |
| Maximum header name size | 256 bytes |
| Maximum header value size | 8 KiB (8,192 bytes) |
| Maximum total header size per record | 64 KiB (65,536 bytes) |

The maximum request size applies to the HTTP request body both before and after gzip decompression + a small amount of internal metadata. For the Workers binding, it applies to the total size of the records in a single `send()` call.

The maximum record size applies to the decoded record content, and to the record content and headers combined. Header sizes are measured in UTF-8 bytes.

There is no limit on the number of records in a request, other than the maximum request size.

## Subscriptions and consuming records

| Feature | Limit |
| --- | --- |
| Maximum `max_records` per consume request | 10,000 |
| Maximum data per consume response | 10 MB |
| `worker_id` length | 1 to 256 characters |
| Maximum active leases per subscription | 128 |
| Maximum subscriptions per stream | 100 |

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