The gemini decisions api is Google's new endpoint for one narrow job: making fast, bounded choices. Google launched it on 11 November 2026 with a new model, Gemini Decision 1 ( gemini-decision-1 ). If you run automations for a small business, such as sorting support tickets, scoring leads or checking order photos, this is worth a look. Here's a research-based summary of what it does and how you might use it.

What it is

Most AI models write an answer word by word, and then your code has to parse it. Gemini Decision 1 doesn't write text at all. According to Google's announcement , it scores your candidate options in a single pass and returns probabilities and confidence scores.

You send one shared input (text, images, audio, video or PDFs, up to 256K tokens) plus up to 1,000 independent questions.…