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GitHub Copilot

Gemini 3 Flash Preview API

GitHub Copilot
About

Build advanced reasoning agents with Gemini 3 Flash Preview, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $0.50/1M input and $3.00/1M output tokens, native tool calling support. Access Gemini 3 Flash Preview via the GitHub Copilot API with up to 64K output tokens.

Capabilities

Input Modalities

textimagevideoaudiopdf

Output Modalities

text
Reasoning
Yes
Structured Output
Yes
Tool Use
Yes
WeightsClosed
Temperature
Adjustable
Attachment
Supported
Limits
Context Window
128K

Tokens

Input Limit
128K

Tokens

Max Output
64K

Tokens

Pricing

Standard (per 1M tokens)

Input
$0.50
Output
$3.00

Caching (per 1M tokens)

Read
$0.05

Audio (per 1M tokens)

Input
$1.00
Frequently Asked Questions

Gemini 3 Flash Preview by GitHub Copilot costs $0.50 per 1M input tokens and $3.00 per 1M output tokens. Cached reads cost $0.05 per 1M tokens.

Model Details
ID
gemini-3-flash-preview
Provider
GitHub Copilot
Family
gemini-flash
Release Date
Dec 17, 2025
Knowledge Cutoff
Jan 1, 2025
API Integration
NPM Package
@ai-sdk/openai-compatible
Environment Variables
GITHUB_TOKEN
API Base URL
https://api.githubcopilot.com
Documentation