(Credit: Google)
It may feel like yesterday that Google released Gemini 3 Pro, but it's back with another update—Gemini 3.1 Pro—featuring big improvements and impressive benchmarks.
"3.1 Pro is designed for tasks where a simple answer isn’t enough, taking advanced reasoning and making it useful for your hardest challenges," Google says. "This improved intelligence can help in practical applications—whether you’re looking for a clear, visual explanation of a complex topic, a way to synthesize data into a single view, or bringing a creative project to life."
Benchmarking results from the ARC-AGI-2 test show that 3.1 Pro beats the existing Gemini option by a factor of two in abstract reasoning puzzles. It also beats its rivals' models with a score of 77.1% versus 52.9% for GPT-5.2 and 68.8% for Claude Opus 4.6. Overall, Google beat the competition from Claude and OpenAI across 12 of 19 benchmarks.
Google mostly fell behind its rivals in various agentic coding tool benchmarks, including the SWE-Bench Verified evaluation.
Another highlight for Gemini 3.1 Pro is its 94.3% score in the GPQA Diamond test, which assesses AI models' scientific knowledge. GPT-5.2 scored 92.4% in that test, with Claude Opus 4.6 behind it at 91.3%.
Gemini 3.1 Pro is available now on the app or a web browser. If you’re a free Gemini user, you’ll have access, but you’ll be limited in how many times you can use it before it temporarily switches you to another model. If you’re a paid subscriber, you’ll have a higher usage limit.
Press the model name in Gemini's prompt box to switch to the Pro option with a description that says, “Advanced math and code with 3.1 Pro."
Gemini 3.1 Pro is also available on Google's NotebookLM, but you need to subscribe to an AI Pro or AI Ultra plan to access it.
Disclosure: Ziff Davis, PCMag's parent company, filed a lawsuit against OpenAI in April 2025, alleging it infringed Ziff Davis copyrights in training and operating its AI systems.