Decision models

A decision model doesn't write a reply. It is given a question and a fixed list of answers, and returns a probability for each one. These models are run on a separate set of questions from the rest of the site, with every answer's probability kept.

Each question is asked many times per model, in several wordings, with the options listed in a new random order on every request, since these models can be sensitive to the order.

Clusters → Which models answer alike, grouped from every answer, and the questions that set each group apart. Answering habits → Leaning toward the first or last option, decisiveness, and how answers move with wording and language. Knowledge cutoff → Where each model's knowledge of the news ends, as a clue to which base model it was built on. Steering dilemmas → Which way each model steers a self-driving car when braking cannot prevent a collision.

Models

20 decision models, newest first. Models with a page also answer the main question set.

perplexity/pplx-decider-flash-v1.2 Perplexity · 2026-10-16
perplexity/pplx-decider-v1.2 Perplexity · 2026-10-16
respan/span-02 Respan · 2026-10-16
liquid/d1-ultra Liquid AI · 2026-10-15
typesafe/jev-1.14 TypeSafe · 2026-10-14
nace-ai/drex-v2.0 Nace.AI · 2026-10-12 · based on Qwen3.6-35B-A3B
cloudflare/clef-omni Cloudflare · 2026-10-09 · based on Qwen3-Omni-30B-A3B-Instruct microsoft/microsoft-decision-1 Microsoft · 2026-10-09 · based on Qwen3.5-9B
nace-ai/drex-v1.5 Nace.AI · 2026-10-09 · based on MiMo-V2.6-Distill-Qwen-9B
upstage/solar-decide-flash Upstage · 2026-10-08
perplexity/pplx-decider-v1.1-27b Perplexity · 2026-10-07 · based on qwen3.8-27b · cutoff 2025-05 (base model, estimated)
openai/gpt-6-luna-decisions OpenAI · 2026-10-06 · based on gpt-6-luna · cutoff 2026-05-18 (base model) cloudflare/clef Cloudflare · 2026-10-01 · based on qwen3.8-27b · cutoff 2025-05 (base model, estimated) cloudflare/clef-flash Cloudflare · 2026-10-01 · based on Qwen3.5-9B liquid/d1 Liquid AI · 2026-10-01 inception/mercury-decide Inception · 2026-09-30
togethercomputer/tev1-4b-experimental Together AI · 2026-09-30 · based on Qwen3.5-4B
upstage/solar-decide Upstage · 2026-09-28 · based on solar-mini4 · cutoff 2026-02 (base model) jaredpalmer/kev-4b Jared Palmer · 2026-09-25 · based on Qwen3.5-4B-Base typesafe/jev-1.13 TypeSafe · 2026-09-18