Cloudflare clef-flash
Cloudflare clef-flash by Cloudflare is a decision model: it answers typed questions with a probability for each allowed answer instead of generating text. It scores 47.6 on the Jev Decision Index (rank 54). Hosted, it costs about — per 1,000 decisions.
Pricing
| Provider | Input / 1M | Output / 1M |
|---|---|---|
| cloudflare-workers-ai | — | $0.00 |
| openrouter | $0.02 | $0.00 |
Cost per 1,000 decisions assumes 200 input tokens per decision.
Specifications
- Provider
- Cloudflare
- Parameters
- 10B
- Released
- Sep 2026
- Open weights
- Yes
- Question types
- Choice (one of N options), Score (ordered rubric), Yes / no
- Mechanism
- Decoder LM with a decision readout
- Backbone
- Qwen/Qwen3.5-9B
- Jev-compatible request
- Yes
- Runs on CPU
- No
- License
- apache-2.0
- Hugging Face
- Cloudflare/clef-flash
Benchmarks
- Jev Decision IndexECE 0.025
- 47.6
Jev Decision Index: public 56.1, ECE 0.025, Brier 0.333. Lower ECE means its probabilities can be taken at face value.
Speed & latency
Compare Cloudflare clef-flash with…
FAQ
How much does Cloudflare clef-flash cost?
Cloudflare clef-flash has no hosted price listed; its weights are open, so the cost is the compute you run it on.
What questions can Cloudflare clef-flash answer?
Cloudflare clef-flash answers choice (one of n options), score (ordered rubric), yes / no questions, returning a probability for each allowed answer.
Is Cloudflare clef-flash well calibrated?
On the Jev Decision Index its expected calibration error (ECE) is 0.025; below about 0.05, a stated 80% confidence is right roughly 80% of the time.
Is Cloudflare clef-flash open weight, and can it run on a CPU?
Yes, Cloudflare clef-flash has open weights. It needs a GPU to run at useful speed.
Data as of 2026-10-14. Source: Metatext decision-model catalogue, 2026-10-14 (OpenRouter, Jev Decision Index, Benchmark Heaven JevBench, Hugging Face). Pricing is per 1M tokens (USD); confirm with the provider before production use.