Google says Gemini Notebook "uses the Decisions API as a real-time router to instantly direct incoming queries to the optimal model tier and thinking level for each request", serving "everyday queries with up to 40% lower latency while reserving deep reasoning models for complex tasks." This is Google's account of its own product.

The exact words it rests on

Gemini Notebook uses the Decisions API as a real-time router to instantly direct incoming queries to the optimal model tier and thinking level for each request. The Decisions API classifies intent in milliseconds to serve everyday queries with up to 40% lower latency while reserving deep reasoning models for complex tasks.

What the source said when we opened it, on 12 Nov 2026.

The source

Gemini Decisions API: Fast, calibrated multimodal decisions (11 Nov 2026)
Google · 2026-11-11

Open the sourcearchived copy

Checked

Checked by the notis newsroom on 12 Nov 2026, against the source above.

In the story

Google releases Gemini Decisions API, which returns probabilities for up to 1,000 questions 12 Nov 2026