Mercury Decide
#117 in Frontier LLMsInception · since 30. September 2026 · 2× · last seen Oct 09, 2026
18
Momentum
Mercury Decide is a structured decision model from Inception, served as a System One endpoint. It returns choice, score or yes/no answers, each with a probability, and writes no prose. The model is free during early access via OpenRouter.
Momentum trend
11.07.09.10.
Features
| Context Window (Tokens) | 32,768 tokens (per systemonemodels.org); 33K per AlphaSignal |
| Platform | Dedicated endpoint POST /v1/systemone via OpenRouter; single provider (Inception), no OpenAI-compatible chat endpoint |
| Price per 1M Tokens | Free during early access; no output-token charge; no published paid price |
| Release Date | September 30, 2026 |