Before it
Multimodal models took images and audio in, and emitted text.
The problem
Agents need models that also act, natively call tools and produce other modalities.
What it introduced
A model built for the agentic era, with native tool use, multimodal output and experimental thinking modes.
Why it matters
It marked Google's reorientation from chat assistant to agent platform.
What modern models inherit
Native tool use as a model capability rather than a wrapper.
What came next
Gemini 2.5's thinking models, then Gemini 3.