llama.cpp ships Decision Models: /v1/systemone scores options in one forward pass (Julia-1, Laya, Kev-4B, lev, OpenJev)
On 2026-10-02 ggml-org announced llama.cpp server support for Decision Models via /v1/systemone (PR #29818, merged 2026-10-02T09:56Z). Send a state plus typed questions; get option probabilities in one forward pass. Day-0 models: Julia-1, Laya, Kev-4B, lev, OpenJev (vision). Cloudflare Clef is planned next.

Key Takeaways
- Official post 2026-10-02 + merged PR #29818 (2026-10-02T09:56Z, +2139/−15)
- Endpoint POST /v1/systemone with choice/score/noul; probabilities + confidence; output_tokens=0
- Day-0 GGUFs: Julia-1 / Laya / Kev-4B / lev / OpenJev; median ~3–43 ms/question on RTX PRO 6000 (blog table)
- Distinct from Ollama SystemOne & Cloudflare Clef hosting; Clef listed as next in llama.cpp
- Start: llama serve -hf ggml-org/Kev-4B-GGUF then curl /v1/systemone

