GitHub Copilot Fusion Orchestrates Models

Fusion makes model selection an infrastructure problem GitHub handles behind the scenes, potentially making agentic coding more efficient and less intimidating.

• –Uses single-model, cascade, and critique workflows depending on task complexity
• –Fusion Max reportedly approaches Claude Code Opus 5.5 performance at roughly half the per-task cost
• –High and Max can consume more credits because multiple models may run on one task
• –Local-model routing adds a promising cost and privacy lever, though it remains experimental and cloud-dependent
• –The bigger strategic move is turning Copilot from a model picker into a model-orchestration layer