Google announces Gemini 3.1 Pro, says it's better at complex problem-solving

Google's Gemini 3.1 Pro AI model offers improved problem-solving and reasoning capabilities. It scored 44.4 percent on the Humanity's Last Exam, outperforming Gemini 3 Pro and OpenAI's GPT 5.2. Gemini 3.1 Pro is now available in preview for developers and consumers.