vLLM-SR Decision 2.0 Kai 0.6B
vLLM-SR Decision 2.0 Kai 0.6B by vLLM Semantic Router is a decision model: it answers typed questions with a probability for each allowed answer instead of generating text. It scores 13.6 on the Jev Decision Index (rank 134).
Pricing
No hosted price is listed. The weights are open: the cost is your own compute.
Specifications
- Provider
- vLLM Semantic Router
- Parameters
- 600M
- 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/Qwen3-0.6B-Base
- Jev-compatible request
- Yes
- Runs on CPU
- Yes
- License
- apache-2.0
- Hugging Face
- vllm-sr/Decision-2.0-Kai-0.6B
Benchmarks
- Jev Decision IndexECE 0.038
- 13.6
Jev Decision Index: public 16.7, ECE 0.038, Brier 0.615. Lower ECE means its probabilities can be taken at face value.
Self-reported by the publisher
The model's own claims, often on its own sets or a self-run copy of a public suite. Not independently verified and never ranked alongside measured results.
- Jev Decision Index public suite (self-run)Self-reportedDecision Index public balanced skill, edition 0.2.1 kit (release-v2.1), self-run
- 16.3
Speed & latency
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FAQ
How much does vLLM-SR Decision 2.0 Kai 0.6B cost?
vLLM-SR Decision 2.0 Kai 0.6B has no hosted price listed; its weights are open, so the cost is the compute you run it on.
What questions can vLLM-SR Decision 2.0 Kai 0.6B answer?
vLLM-SR Decision 2.0 Kai 0.6B answers choice (one of n options), score (ordered rubric), yes / no questions, returning a probability for each allowed answer.
Is vLLM-SR Decision 2.0 Kai 0.6B well calibrated?
On the Jev Decision Index its expected calibration error (ECE) is 0.038; below about 0.05, a stated 80% confidence is right roughly 80% of the time.
Is vLLM-SR Decision 2.0 Kai 0.6B open weight, and can it run on a CPU?
Yes, vLLM-SR Decision 2.0 Kai 0.6B has open weights. It is small enough to run on a CPU.
Data as of 2026-10-14. Source: Metatext decision-model catalogue, 2026-10-14 (Jev Decision Index, Hugging Face). Pricing is per 1M tokens (USD); confirm with the provider before production use.