Mercury Decide is Inception's structured decision model, served as a System One endpoint.
https://openrouter.ai/api/v1 inception/mercury-decide-20260930:free Inception: Mercury Decide (free) is listed for chat workloads and supports a 33K context window.
Check OpenRouter's current endpoint status before integrating this listing. Use the alternatives table if the provider listing is unavailable.
We only found this Inception: Mercury Decide (free) listing on OpenRouter in the current catalog. Use the related models section for nearby alternatives.
| Provider | Model listing | Access | Context | API | Limits |
|---|---|---|---|---|---|
| | Inception: Mercury Decide (free) | Check provider | 33K | OpenAI-style | 200 req/day (free tier) |
| Model | Provider | Context | Access |
|---|---|---|---|
| inclusionAI: Ling 3.1 Flash | OpenRouter | 262K | Free tier |
| Apodex: Apodex 1.1 Mini (free) | OpenRouter | 262K | Free tier |
| Space Bunny Alpha | OpenRouter | 1.0M | Free tier |
| inclusionAI: Ling 3.0 Flash Sante (free) | OpenRouter | 262K | Free tier |
| Qwen: Qwen3.8 27B (free) | OpenRouter | 262K | Free tier |
Inception: Mercury Decide (free) is tagged for chat in this catalog and works with OpenAI-compatible client libraries.
Inception: Mercury Decide (free) appears in the free model catalog for OpenRouter, but its current endpoint availability should be confirmed with the provider before use.
The model ID shown in this catalog is inception/mercury-decide-20260930:free.
The listed free tier limit is 200 req/day (free tier). Limits can change per account tier, so confirm against the provider dashboard.
The listed context window is 33K tokens with up to 8K output tokens.
Mercury Decide is Inception's structured decision model, served as a System One endpoint. Send a state along with typed questions, and it returns a choice, a score, or a yes/no answer, each with a calibrated probability taken directly from the model rather than written out as text, so output tokens are free. It makes up to 14 decisions per second and reports how certain it is, so a decision system can run it on every case and escalate the unsure ones to a human. Mercury Decide uses the same /v1/systemone schema as Jev.
For API keys, setup steps, and provider-level limits, see the OpenRouter provider page.