Google Releases Gemini 3.1 Pro with 77.1% on ARC-AGI-2

Overview

Google released Gemini 3.1 Pro on February 19, 2026, a mid-cycle upgrade that significantly boosts the model's core reasoning capabilities. Previously limited to the Gemini 3 Deep Think tier, these advanced reasoning features are now being rolled out more broadly across Google's platforms.

Benchmark Performance

Gemini 3.1 Pro scored 77.1% on ARC-AGI-2, an abstract reasoning benchmark that tests general intelligence and pattern generalization. Google claims this is "more than double the reasoning performance" of the previous Gemini 3 Pro—a substantial leap for a mid-cycle release and one of the highest scores publicly reported on this challenging benchmark.

Key Use Cases

Visual Explanations: Breaking down complex topics with visual reasoning

Data Synthesis: Extracting insights from large, unstructured datasets

Creative Projects: Multimodal generation and ideation support

Agentic Workflows: Multi-step autonomous task execution

Availability

Gemini 3.1 Pro is rolling out in preview across multiple surfaces:

Gemini app (all users)

NotebookLM (Pro and Ultra subscribers)

Developer tools: Google AI Studio, Vertex AI, Gemini Enterprise, Android Studio, and CLI

General availability will follow once Google validates performance across ambitious agentic workflows.

Versioning Change

This release also marks a departure in Google's versioning conventions. Rather than the previous ".5" mid-year cadence, Google is adopting ".1" increments, suggesting a more rapid and iterative release cycle going forward.

Source: 9to5Google | Google Blog