Google · Gemini Pro line · flagship
Gemini 3.1 Pro was released by Google on February 19, 2026, as a flagship model in the Gemini Pro line.
Google's updated flagship: its score on brand-new reasoning puzzles more than doubled over Gemini 3 Pro — at the same price.
Compared with Gemini 3 Pro · the model it replaces
Solves about 8 in 10 brand-new reasoning puzzles
ARC-AGI-2 — novel puzzles a model hasn't seen before
77.1%
▲ up from 31.1% · more than doubled
Handles 7 in 10 tasks that use outside tools
MCP Atlas — calling tools and services to get work done
69.2%
▲ up from 54.1% · +15 points
Costs the same to run as before
Price per 1M tokens — what developers pay, input / output
$2 / $12
same price as Gemini 3 Pro
Every Monday, only when something shipped: the AI models that came out, what each one changed, and which lines are due next.
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Gemini 4 Argon is the current model in this line. The card shows how long it has been since the last release against the line's usual gap and its recent ones — the rhythm, not a date.
Latest: Gemini 4 Argon · Oct 13, 2026
Newest first. See the full line with every card →