> ## Documentation Index
> Fetch the complete documentation index at: https://docs.obversa.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# A decision model as an engine

> A model that returns one typed choice with its confidence, answering the three places a run already asks for a number.

<Note>
  **Coming soon.** Not in this release. This page says what the feature is,
  so that the shape is public before the code is.
</Note>

A run already asks for numbers in three places. A branch reads a
route and a score to choose a path. A confidence gate decides whether a
result is good enough to pass. An advisor is consulted part-way through and
its answer changes what happens next.

Today each of those is answered by a model that writes prose, and the
runtime reads a number back out of the words. That works, and it costs a
full turn of inference every time.

A decision model answers directly: one choice from a set declared in
advance, with a confidence attached. The same three places, the same
contract, without the round trip through prose.

See [Conditions and gates](/graphs/contract).