Decision Models / Solar Decide
HOSTED
By Upstage · Released 28 Sep 2026
Upstage's decision endpoint, available through OpenRouter. The date is when OpenRouter announced it; we have not found an announcement from Upstage itself. A faster sibling, Solar Decide Flash, joined on 8 Oct 2026 with a 524K context.
Source: OpenRouter → Source: OpenRouter announcement → Source: Solar Decide Flash →
A local agent workflow tool written in C. Its recap command sends each session transcript to Solar Decide, which labels every statement as a goal, decision, constraint, done or noise before a chat model writes the summary.
Calls Jev, OpenAI's Decisions API, Upstage Solar Decide and local Ollama models through one interface and logs version, latency, tokens and cost. On picking the right one of 12 tools for 40 Korean and English requests, the maker measured Jev 1.13 at 40 of 40 and OpenAI Decisions at 0.90, against 0.85 for a generative model choosing directly.