發生什麼事
GitHub has made Copilot Fusion generally available (Route and orchestrate models with GitHub Copilot Fusion). Selecting Fusion from the model menu lets Copilot choose a workflow: use one model, have a faster model draft first and let a quality check decide whether to move to a stronger model, or have a second model review a draft before the original model revises it. Standard, High and Max are available across all Copilot plans, in VS Code, the Copilot app, Copilot CLI and JetBrains IDEs. Enterprise administrators can restrict the available models.
@github says Fusion Max came within two points of Claude Code with Opus 5.5 Max on Artificial Analysis's coding-agent benchmark, at about half the API cost per task. Artificial Analysis @ArtificialAnlys says Fusion routed between Anthropic and OpenAI models and scored two points below its comparison group; it lists $5.59 per task versus $11.42.
01Sources
- Route and orchestrate models with GitHub Copilot Fusion: GitHub changelog, published 2026-10-28 16:00 UTC (00:00 on Oct 29 in Taipei); launch, levels, supported clients, pricing and administrator controls
- @github: GitHub's official account; benchmark results and the 30% discount through November 30
- @ArtificialAnlys: third-party evaluator; models used and per-task costs