Gemini 3.1 Pro Preview advances software engineering and agentic workflows with targeted quality improvements for finance and spreadsheet applications, plus more efficient thinking that reduces token consumption while maintaining performance.
import { streamText } from 'ai'
const result = streamText({ model: 'google/gemini-3.1-pro-preview', prompt: 'Why is the sky blue?'})Gemini 3.1 Pro Preview is the updated flagship in the Gemini 3.1 family, building directly on Gemini 3 Pro with quality improvements targeted at real-world production domains. Software engineering and agentic workflows are the primary areas of improvement, alongside enhanced usability for finance and spreadsheet applications.
The model introduces more efficient thinking. At the pro tier, input tokens are a significant cost factor in long agentic sessions. Better reasoning efficiency means the model works through complex tasks without generating proportionally more tokens, directly reducing per-task operating cost compared to Gemini 3 Pro.
For teams building developer tooling, code review automation, or financial analysis pipelines, Gemini 3.1 Pro Preview is designed for the level of structured reasoning those applications require.