What Happened
On 2026-02-19, Google released Gemini 3.1 Pro, making it available in developer preview and rolling it out through Gemini and NotebookLM.
Why It Matters
The release advanced the reasoning-focused Gemini generation and distributed that capability across both applications and developer tools. It also connected a specialized research-oriented reasoning advance to a broadly usable baseline. The distinction between preview access and a completed global rollout matters when comparing this event with other providers’ launches.
Technical Details
Preview access included the Gemini API, AI Studio, Antigravity, Gemini CLI, Android Studio, and Vertex AI. Google emphasized stronger reasoning on unfamiliar problems and demonstrated applications including animated SVG generation. Access through Gemini and NotebookLM depended on subscription plans and rollout.