[Image blocked: Decision-2.0-Vega-27B]
Decision-2.0-Vega-27B
Decision-2.0-Vega-27B is the 27B model of Decision 2.0, the decision models of vLLM Semantic Router. Give it an input (text or JSON) and the questions you need answered: pick one of several options, say yes or no, or rate on a scale. It answers them all at once and returns a probability for every answer, without generating text.
Highlights
- Top JevArena score of its size: 74.0 among the 4 same-size models compared, statistically level with AutoJev-27B (72.1).
- The strongest Decision 2.0 model: +11.2 on the Jev Decision Index over Decision-2.0-Lux-9B.
- Speed: a median of 71.4 ms per single-question request on a single GPU.
- Many questions, one pass: Choice, Yes / No and Score questions about the same input are answered together in one forward pass, with a probability for every option.
Quickstart
Evaluation
JevArena
[Image blocked: JevArena: Decision-2.0-Vega-27B and same-size models]
[Image blocked: JevArena by decision type: Decision-2.0-Vega-27B and same-size models]
Every model answers the same frozen prompts, scored the same way; missing or invalid answers count as errors. Human-labelled transfer is the median macro-F1 over 15 human-labelled tasks (×100).
Jev Decision Index
[Image blocked: Jev Decision Index against model size]
[Image blocked: Jev Decision Index by area: Decision-2.0-Vega-27B and Decision-2.0-Lux-9B]
Decision 2.0: independent reproduction with the official 0.2.1 kit on the released weights; others: public board snapshot, 2026-09-28. Training data audited at row level against all Index test items.
License
Apache-2.0 (LICENSE [blocked]).
Citation