Route and orchestrate models with GitHub Copilot Fusion
GitHub has made Copilot Fusion generally available: a model-picker option that automatically routes and orchestrates several models per task, with Standard, High and Max effort levels. Paid plans get a temporary 30% discount on model costs.
What the article says
GitHub announced on October 28, 2026 that GitHub Copilot Fusion is generally available. Instead of choosing a model for each task, users select Fusion and Copilot decides which models to use. The service combines the multi-model orchestration of Project HydraFusion with Copilot's auto model selection.
There are three effort levels (Standard, High, Max) and three workflows: a single model, a cascade with a quality check, or a critique in which a second model reviews the first. GitHub says Fusion Max scored 60 on the Artificial Analysis Coding Agent Index, within two points of Claude Code with Opus 5.5 Max, at about half the average cost per task. Administrators control which models Fusion may use. Billing follows each model's standard rate, with a limited-time 30% discount on paid plans. Fusion is available in VS Code, the GitHub Copilot app, the CLI and JetBrains IDEs.
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