Gemini 3.1 Pro

Google

Latest Gemini Pro model with thinking capabilities, function calling, code execution, and search grounding. Supersedes Gemini 3 Pro.

Text Generation API Latest Gemini Family v3.1
Documentation Back to Models
Parameters
-
params
Context Window
1.0M
tokens
Max Output
66K
tokens
Input Price
$2.0000
per 1M tokens
Output Price
$12.0000
per 1M tokens

Gemini Family Timeline 12 versions

Gemini 3.1 Flash-Lite api
Mar 2026
Gemini 3.1 Pro Current Latest api
Feb 2026
Gemini 3.0 Ultra api
Nov 2025
Gemini 3.0 Flash api
Oct 2025
Gemini 3.0 Pro api
Oct 2025
Gemini 2.5 Flash Lite (8B) api
May 2025
Gemini 2.5 Flash api
Apr 2025
Gemini 2.5 Pro api
Mar 2025
Gemini 2.0 Flash Exp api
Dec 2024
Gemini 1.5 Pro api
May 2024
Gemini 1.5 Flash api
May 2024
Gemini 1.5 Pro (Vertex) api
-

Capabilities

👁️
Vision
⚡
Function Calling
📋
JSON Mode
🌊
Streaming
💬
System Prompt
🖥️
Code Execution
🔍
Web Search
🔌
MCP Support

Extended Pricing

Input
$2.0000/1M
Output
$12.0000/1M
Cache Read
$0.2000/1M

Details

Release Date
February 19, 2026
Knowledge Cutoff
January 1, 2025
Source
API
API Key Required
Yes
License
Proprietary
Model ID
gemini-3.1-pro
Last updated: March 13, 2026