Gemini Deep Research Escaped Into the API

Google shipped Deep Research to the Gemini API, which means you can now wire it into things without explaining to a product manager why your prototype requires a personal Gmail account.

The interesting part is the pricing structure, or what passes for one. Search is exposed as a tool — not bundled into some opaque "Deep Research" SKU, but called like any other tool call. Which means you're not paying a product markup for the research behavior itself. You're paying for the individual search invocations, plus whatever Gemini tokens the reasoning burns through. That's technically a technicality, but it's the kind of technicality that shows up on your invoice.

Whether this is cheap depends entirely on how deep the research actually goes. A model that decides it needs forty searches to answer a question about competitive landscaping is going to eat through your budget the same way it would eat through a junior analyst's afternoon. The mechanism changed. The appetite didn't.

Still — search as a tool is the right abstraction. You can see what it's doing. You can cap it. You can swap it. The black box got a window, and the window has a price tag on it, and that's better than the alternative.