News Weekly
ENहिन्दी
LV 10 XP
Your progress · 0/5 chapters
About 1 min total
Models & EconomicsISSUE #4 · STORY 34 OF 40Oct 1, 2026COMPANY CLAIM

Cloudflare shipped decision models that answer with probabilities, not prose

Clef and Clef-flash, released 1 October 2026 under Apache 2.0, take application state plus a typed question schema and return one probability per option in a single forward pass, with 64k context and vision support. Cloudflare's own changelog puts Clef-flash at 38.8 ms median and Clef at 209.3 ms.

A courtyard answering stall where a long roll of handwritten paper is being replaced by a single pinned slip and a metal dial with a fixed few notches.

Read it your way

CHAPTER 1Picked for Explorer

The 60-second version

Cloudflare released two open-weight decision models on 1 October 2026: Clef at 27B and Clef-flash at 9B, both post-trained from Qwen bases. They answer typed questions with scores rather than paragraphs, and they run on Workers AI or on hardware you already own.

Apache 2.0 weightsBoth models are on Hugging Face and Workers AI under a permissive licence with no copyleft.
Two sizes, one designClef is post-trained from Qwen3.8-27B; Clef-flash from the 9B Qwen3.5 model.
Structured answers onlyEach question type returns one logit per allowed option, turned into probabilities by a softmax.
Vision in the request pathImages and video frames can be part of the state a decision is made about.
Finish this chapter for +15 XP
A sorting table holding a broad crowded printed form beside one small unmarked card with a single row of empty slots, with bare board between the two.
Your next move · Explorer

Reproduce one decision yourself

1Load Clef-flash on hardware you already have, since its memory floor is far below the 27B model's.
2Score the same question set twice against different state and check whether the ordering holds.
3Construct a case where the right answer is no option at all, and see if the distribution admits it.

Switch your reading mode at the top to see a different next move.

Tap to open

Things to keep an eye on

Pop quiz · unlock the Decisions without prose badge

Did it stick?

0/3
What does a Clef model return for a typed question?+20 XP
How are the per-option scores produced?+20 XP
What did Cloudflare confirm about the training data?+20 XP
Your call · +5 XP

Where would you first put a decision model to work?

Research dossierThe full research, labeled and sourcedCOMPANY CLAIM0 sources · 1 min read

No public research sections are available for this story yet.

Up next · story 35 of 40
AWS published a 2B decision model that runs on one consumer GPU
All storiesNext story