---
title: "Cloudflare Clef-flash hosted context window cut to 24K tokens: 2026-10-09 | Harbyn"
description: "Cloudflare Clef-flash hosted context window cut to 24K tokens, announced Oct 9, 2026."
canonical: "https://harbyn.com/changes/cloudflare/2026-10-09-workers-ai-clef-omni-adds-audio-and-video-input-clef-flash-is-now-cheaper-an-3"
last-updated: 2026-10-09
---

# Cloudflare Clef-flash hosted context window cut to 24K tokens

Markdown version of <https://harbyn.com/changes/cloudflare/2026-10-09-workers-ai-clef-omni-adds-audio-and-video-input-clef-flash-is-now-cheaper-an-3>.

Breaking change - Cloudflare. high severity. In effect.

On Workers AI, @cf/cloudflare/clef-flash now has a 24K-token context window, down from 64K, so requests with more than 24K input tokens no longer fit; Clef keeps its 64K window. Its price dropped to $0.038 per million input tokens, from $0.090.

## Facts

| Fact | Value |
| --- | --- |
| Vendor | [Cloudflare](https://harbyn.com/vendors/cloudflare.md) |
| Kind | Breaking change |
| Severity | high |
| Status | In effect |
| Announced | Oct 9, 2026 |
| Added to Harbyn | Oct 9, 2026 |
| Lead time | No dated deadline |
| Model IDs | `@cf/cloudflare/clef-flash` |
| Vendor page | <https://developers.cloudflare.com/changelog/post/2026-10-09-clef-omni-workers-ai/> |
| Review | Reviewed by a person, extracted by a model |

## Find it in your code

```sh
npx harbyn scan
```

The scanner reads your repository on your machine and reports every file and line that uses the identifiers above. Nothing leaves your machine.

## Sources

Where this event comes from: the page we read, when we read it, and the hash of that snapshot.

- <https://developers.cloudflare.com/changelog/rss/workers-ai.xml> (changelog, fetched 2026-10-09 22:43 UTC, sha256 `64b61c3933a7b1324444007d1ea79fbb872c8e79e46a16d29a954bb3386633e2`)

## Related changes

### More from Cloudflare

- [Clef returns decisions up to 2x faster on Workers AI](https://harbyn.com/changes/cloudflare/2026-10-09-workers-ai-clef-omni-adds-audio-and-video-input-clef-flash-is-now-cheaper-an-2.md) (Behavior change, announced Oct 9, 2026)
- [Array form of createBatch() is deprecated](https://harbyn.com/changes/cloudflare/2026-10-08-workflows-workers-create-workflow-instance-batches-by-count-or-list-2.md) (Deprecation, announced Oct 8, 2026)
- [Workers requests and connections get a longer grace period during runtime updates](https://harbyn.com/changes/cloudflare/2026-10-12-workers-more-time-for-requests-to-finish-during-workers-runtime-updates.md) (Behavior change, announced Oct 12, 2026)
- [Workers Builds posts preview URLs faster](https://harbyn.com/changes/cloudflare/2026-10-12-workers-workers-builds-now-posts-preview-urls-in-seconds.md) (Behavior change, announced Oct 12, 2026)

### Changes at other vendors

- [Amazon Selling Partner API: October listing attribute usage and enumeration value updates](https://harbyn.com/changes/amazon-sp-api/2026-10-14-sp-api-updates-new-listings-items-api-ivp-values-in-eu5-jp-and-ca-stores-oct-2.md) (effective Oct 26, 2026)
- [Supabase: four CBC-mode TLS 1.2 cipher suites will be removed from project HTTP APIs](https://harbyn.com/changes/supabase/2026-10-12-an-outdated-subset-of-tls-1-2-ciphers-will-be-disabled-on-project-http-apis.md) (effective Nov 10, 2026)
- [Google Workspace APIs: OAuth clients must be marked as agentic to call Google Workspace MCP servers](https://harbyn.com/changes/google-workspace/2026-10-12-oauth-clients-must-be-marked-as-agentic-to-call-google-workspace-mcp-servers.md) (effective Nov 11, 2026)
- [Bitbucket Cloud API: Git Credential Manager upgrade required for OAuth 2.0 Git authentication](https://harbyn.com/changes/bitbucket/2026-10-13-git-credential-manager-upgrade-required-for-oauth-2-0-git-authentication.md) (effective Nov 30, 2026)

[All upcoming deadlines](https://harbyn.com/deadlines.md)