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GitHub Copilot Fusion

GitHub's AI coding agent that picks and combines models

Listing details

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Nov 1, 2026
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Nov 1, 2026

Listing information

  • Overview
  • 4 key features
  • 4 use cases

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GitHub Copilot Fusion preview

What is GitHub Copilot Fusion

GitHub Copilot Fusion is GitHub's AI coding agent that removes the guesswork from model selection. Rather than relying on a single model, Fusion automatically routes each coding task to suitable models and combines them when needed—one model can write code while another reviews or improves it. Developers can choose Standard, High, or Max effort levels to balance speed, quality, and cost. Fusion is available across GitHub Copilot plans in VS Code, Copilot CLI, the Copilot app, and JetBrains IDEs.

Key Features

Automatic model routing that assigns each coding task to a suitable AI model
Multi-model combination, letting one model write code while another reviews or improves it
Configurable effort levels (Standard, High, Max) to balance speed, quality, and cost
Availability across VS Code, Copilot CLI, the Copilot app, and JetBrains IDEs

Use Cases

  • Code generation without manually choosing which AI model to use
  • Code review and improvement using a different model than the one that wrote the code
  • Tuning the speed-quality-cost tradeoff through effort level selection
  • AI-assisted coding across editors and environments including VS Code, JetBrains IDEs, and the command line

Why do startups need this tool?

Startups can accelerate development by letting Copilot Fusion handle model selection automatically, combining models for stronger code generation and review while controlling cost and speed through effort levels—all within the editors their engineers already use.

FAQs

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