Clef

by Cloudflare · 27B parameters

Current new · 12d budget open weights cheap tier

Availability: Hosted by Cloudflare on Workers AI as @cf/cloudflare/clef, billed against the Workers AI neuron allowance (10,000 neurons a day free, then pay-as-you-go). The open weights can also be self-hosted.

Today's price · per 1M tokens

Input

$0.240

per 1M tokens

Output

per 1M tokens

Blended

$0.180

blended $/1M — 3:1 weighted input:output

How this price is scoped: Cloudflare's own Workers AI pricing page lists @cf/cloudflare/clef at $0.240 per M input tokens (21,818 neurons per M input tokens) and prints no output rate. Clef models do not charge for output tokens, because they return a decision with a probability for each allowed answer rather than generated text, so the $0 output here is Cloudflare's own published rate, not a missing number. Images and video are converted to input tokens and billed at the same input rate.

Source: official Cloudflare pricing · read Oct 13, 2026 MODELPRICEWATCH.COM · 2026-10-13

Price receipt

No confirmed receipt. We hold dated captures of Cloudflare's pricing page, but none of them tied Clef to the price above on that page, so we do not claim this number is sourced. Check the provider's page directly before relying on it.

Overview

The first model trained by Cloudflare's Workers AI team: a 27B multimodal decision model. You send a state (text, JSON, images or video) and a set of typed questions — yes/no, choice or score — and get back a probability for every allowed answer instead of generated text. Cloudflare positions it as a drop-in for TypeSafe's Jev. The weights are open under Apache 2.0 on Hugging Face; the hosted model runs on Workers AI at $0.24 per 1M input tokens with no output charge.

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