Gemini is Google's family of AI models, built from the start to handle text, code, images, audio and video, and the name of Google's AI assistant.
In plain words
Google introduced Gemini in December 2023 in three sizes: Ultra for the hardest tasks, Pro, and Nano for running on devices. Rather than adding vision to a text model later, Google trained it to be multimodal from the beginning. New versions keep arriving: the Gemini API now lists Gemini 4 Hydrogen for everyday coding and agent tasks, calls Gemini 3.8 Flash (released 2 September 2026) its previous-generation Flash model, and offers voice models such as Gemini 3.8 Live and image models such as Nano Banana 2.
A quick example
You could give Gemini a photo of a handwritten maths problem and a spoken question about it, and ask for a written, step-by-step answer, all in one request.
Where you'll meet it
- The Gemini app.
- The Gemini API for developers.
- On-device features through Gemini Nano.
Related
Sources
- DocsIntroducing Gemini: our largest and most capable AI model, Google · read 29 Sept 2026
- DocsGemini models, Gemini API docs · read 12 Nov 2026
- DocsGemini deprecations, Gemini API docs · read 2 Nov 2026
- DocsGoogle I/O 2025: all our announcements, Google · read 29 Sept 2026
Checked by WhatIsAI against the sources above · 12 Nov 2026. Spotted an error? Report it.