Gemini 3.1 Pro

Overview

Gemini 3.1 Pro is Google DeepMind's most capable model as of February 2026, released February 19, 2026. It is part of the Gemini 3 series — a suite of natively multimodal reasoning models designed to comprehend and reason across text, audio, images, video, and entire code repositories simultaneously. The headline achievement is its 77.1% score on ARC-AGI-2, more than doubling Gemini 3 Pro's score on a benchmark specifically designed to resist AI systems relying on pattern recognition rather than genuine reasoning.

Gemini 3.1 Pro represents Google DeepMind's answer to the question of what comes after frontier-level performance on traditional benchmarks. With ARC-AGI-2 emerging as the new hard test of general reasoning, Gemini 3.1 Pro's score — well above any other publicly reported model — positions it as the current leader on the most demanding available reasoning evaluation.

Specifications

• Developer: Google DeepMind
• Model String: gemini-3.1-pro (check Google AI docs for versioned string)
• Release Date: February 19, 2026
• Type: Natively Multimodal LLM (text, audio, images, video, code)
• Context Window: 1,048,576 tokens (1M+)
• Access: Google AI Studio, Gemini API, Vertex AI, Gemini Advanced (Ultra subscribers)
• Pricing: See Google AI pricing for current rates

Capabilities

ARC-AGI-2 Reasoning: 77.1% on ARC-AGI-2, more than double Gemini 3 Pro's score — the highest publicly reported score on this benchmark as of February 2026. ARC-AGI-2 is designed to test novel reasoning patterns that can't be solved through memorization.

Native Multimodality: Unlike models that bolt on vision as a secondary capability, Gemini 3.1 Pro was designed from the ground up to reason across modalities simultaneously — processing text, images, video, and audio in an integrated way.

Code Repository Comprehension: Can reason across entire code repositories held in its 1M+ token context, enabling analysis and reasoning at a scale that goes beyond file-by-file review.

Long-Context Reasoning: Extended from Gemini 3 Pro's capabilities with improved coherence and reasoning quality across very long inputs.

Limitations

Pricing details are not yet fully published for Gemini 3.1 Pro as of late February 2026 — check Google AI Studio for current rates. As the most capable and newest model in the lineup, it is expected to be the most expensive Gemini option. For high-volume or latency-sensitive applications, Gemini 3 Flash or Gemini 2.5 Flash remain better choices.

Recent Developments

• February 19, 2026 Launch: Released as the latest Gemini 3 series model, with a focus on pushing ARC-AGI-2 reasoning performance.
• ARC-AGI-2 Leadership: 77.1% score sets a new public benchmark record at launch, significantly ahead of GPT-5.2 Thinking and Claude Opus 4.6 on this specific test.
• Competitive Context: Released amid intense competition from Anthropic (Opus 4.6, Feb 5) and OpenAI (GPT-5.2 Codex, Jan 14), with Google positioning 3.1 Pro's reasoning benchmark performance as its key differentiator.

Last Updated

February 26, 2026