C

Clef Flash

Sep 2026
CClef Flash
Compare in
on
—per task?
$0.038 / —per 1M in / out?
—output speed?
25Kcontext

Ranking?

Full ranking →
1D1 Ultra92.62Decider v1.287.73Celeris-1 Decision83.74GLiDE83.75Microsoft Decision 181.9
···
13Clef7114Clef Flash64.415Clef Omni62.1

Run it yourself

estimate
Fits on✓ 8 GB (phone, laptop) · compressed✓ 16 GB · 8-bit✓ 24 GB GPU · full quality✓ 48 GB GPU · full quality✓ 80 GB GPU · full quality
LicenceApache-2.0free for commercial use

Benchmarks

in Decision models
AA Decision Index v1.045.8#14
AA Decision cost per task v1.00#8
AA Decision time per task v1.0298#12
AA Decision · Omniscience accuracy32.6#13
AA Decision · Omniscience non-hallucination rate2.7#12
AA Decision · Humanity's Last Exam text multiple-choice accuracy10.3#13
AA Decision · When2Call accuracy64.4#14
AA Decision · WildGuardTest average F190.9#9
Community Decision Index 0.4.144.4#48
JevBench v1.6.136.6#2
JevBench v1.6.37 · open capability63.8#3

FAQ

How much does Clef Flash cost?›

$0.038 per 1M input tokens and — per 1M output tokens.

Is Clef Flash free to use?›

There is no free API; the cheapest paid price is $0.038 per 1M input tokens. The weights are open, so you can run it yourself.

How good is Clef Flash, and what is it best at?›

#14 of 15 in Decision models.

Is Clef Flash better than Clef?›

On AA Decision · When2Call accuracy, Clef Flash scores 64.4 vs 71 — lower.

How can I use Clef Flash?›

Through the API of DeepInfra, OpenRouter.

What is the context window of Clef Flash?›

25K tokens.

When was Clef Flash released? Is there a newer version?›

Released 2026-09-30. It is the current version in its line.

Is Clef Flash open source?›

Yes, the weights are open (Apache-2.0 licence).

Can I run Clef Flash locally?›

The weights are open and can be self-hosted; hardware needs are not confirmed yet.

Can Clef Flash read images?›

It accepts text and images, video as input.

What is Clef Flash?›

Clef Flash is an open-weights language model from Cloudflare, released Sep 2026.

What are the best alternatives to Clef Flash?›

D1 Ultra (better), Decider Flash v1.2 (open weights).