Gemini 3.1 Pro
Gemini 3.1 Pro is Google's frontier reasoning model, delivering enhanced software engineering performance, improved agentic reliability, and more efficient token usage. Building on the multimodal foundation of the Gemini 3 series, it combines high-precision reasoning across text, image, video, audio, and code with a 1M-token context window, and introduces a medium thinking level to balance cost, speed, and performance. It excels at agentic coding, structured planning, and multimodal analysis.
Quick start
Drop-in requests for the OpenAI-compatible Deva endpoint.
1curl https://api.deva.me/v1/chat/completions \2 -H "Authorization: Bearer $DEVA_API_KEY" \3 -H "Content-Type: application/json" \4 -d '{5 "model": "google/gemini-3.1-pro-preview",6 "messages": [{"role":"user","content":"Hello from Deva"}],7 "stream": true8 }'Capabilities
Feature metadata advertised for this model.
Related models
More options from google and the recommended set.
GOOGLE: Gemini 2
120K context$0.1/M in$0.4/M out
GOOGLE: Gemini 2.5 Pro
1.1M context$1.25/M in$10/M out
GOOGLE: Gemini 3 Flash
1M context$0.5/M in$3/M out
X AI: Grok 4.3
1M context$1.25/M in$2.5/M out