What does mercury-decide decide?

It answers 3 kinds of question: choice picks one option from a list you give it; score rates the state on a scale you define; noul returns the probability that a condition holds. Every answer is a typed value with a probability, never free text.

How do I run mercury-decide?

Inception (via OpenRouter) serves it over an API; the Providers section has the prices and the link.

Can I use mercury-decide commercially?

It is published under proprietary. Read the licence before shipping; the model card may add terms of its own.

What is mercury-decide built on?

It is a mercury model with no recorded base.

How much can mercury-decide read at once?

Up to 32,768 tokens of state per request.

mercury-decide: AI decision model API by Inception

Mercury Decide

Inception's hosted decision model, served only on OpenRouter during free early access. It takes a state and typed questions and returns a choice, a score or a yes/no answer with a probability read from the model, on the same /v1/systemone schema as Jev.

Announced by Inception on 30 September 2026 and listed on OpenRouter's Decisions API as inception/mercury-decide:free, with Inception as the only provider and a 32,768-token context. It is free during early access, and no paid price has been published. Inception's own site, docs and API model list do not mention it yet. Weights, parameter count and architecture are not published. Inception says it is the most capable decision model on OpenRouter by JevBench v1.4, a third-party benchmark, but publishes no score, and the JevBench repository had no Mercury Decide row as of 6 October. Inception also quotes up to 14 decisions per second, with no hardware stated. Not related to G42's Inception (Jais).

What it decides

choice — picks one option from a set
score — places the input on an ordered scale
noul — answers a yes/no question with one probability

At a glance


Maker	Inception
Released	2026-09-30
License	proprietary

Hosted API

Served by Inception (via OpenRouter). Get access.

Playground

Build a request for inception/mercury-decide. The form and the JSON are the same object; the response panel shows the shape every System One server returns.

Input

StateThe context the questions are asked about. Up to the model's context length.

A yes/no question. The answer is one probability that the condition holds.

Instructions

Response

Placeholder values, in the shape a run returns.

safenoul7%

This model doesn't answer live here. Send this request to Inception (via OpenRouter)'s endpoint or your own server for this model; every System One server speaks this shape.

Call it

curl https://api.systemonemodels.ai/v1/systemone \
  -H "Authorization: Bearer $SYSTEMONE_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"model":"inception/mercury-decide","state":"Task: clean up inactive accounts before the quarterly report.\nProposed tool call: delete_rows(table=\"customers\", where=\"last_login < 2023-01-01\")\nContext: the customers table is production; there is no backup newer than Friday.","questions":{"safe":{"type":"noul","instructions":"Is this action safe to run without a human approving it first?"}}}'

Inception: mercury-decide

Mercury Decide

What it decides

At a glance

Hosted API

Read more

Playground

Providers

Inception: mercury-decide

Mercury Decide

What it decides

At a glance

Hosted API

Read more

Playground

Providers

Pricing

Performance

Model tree

Activity

Documentation

systemone.yaml

FAQ