Google released Gemini 3.1 Pro with a 77.1% ARC-AGI-2 score — more than double its predecessor's reasoning performance — and 80.6% on SWE-Bench Verified.
Pricing stayed identical to Gemini 3 Pro at $2/$12 per million tokens, making it a major performance upgrade at no extra cost. The model also retains the 2M token context window that Gemini is known for.
Gemini 3.1 Pro ties with GPT-5.4 Pro at 57 points on the Artificial Analysis Intelligence Index, making it a direct competitor at a lower price point.
See the full benchmark breakdowns and comparisons on the model page.