GitHub Copilot HydraFusion orchestrates multi-model coding workflows
GitHub’s Project HydraFusion research preview (all Copilot plans via /experimental in Copilot CLI) picks single, cascade, or critique multi-model workflows per task. On TerminalBench 2.1 it beat Claude Opus 5 by 4.9 points at 67% lower estimated cost; usage bills at each model’s standard token rate.