Copilot Fusion is generally available: automatic model routing

What changed

Fusion offers three effort levels (Standard, High, Max) and three workflows: Single, Cascade (a cheaper model drafts and escalates if a check fails) and Critique (one model drafts, another reviews). Every model Fusion uses is billed at its standard rate, and paid plans get 30% off model costs with Fusion for a limited time. It’s available in VS Code, the GitHub Copilot app, Copilot CLI and JetBrains IDEs. Earlier research-preview picks (auto, HydraFusion, HydraFusion Max) move automatically to the matching effort level.

Who it affects

All Copilot plans, in VS Code, the Copilot app, Copilot CLI and JetBrains.

What to do

Update your client and pick Copilot Fusion in the model picker. Watch credit spend, since every model involved is billed. Admins can exclude models through model policies.

Source: https://github.blog/changelog/2026-10-28-route-and-orchestrate-models-with-github-copilot-fusion