GitHub 推出 HydraFusion：Copilot 多模型路由实现前沿级性能
原标题：GitHub Copilot's Project HydraFusion Promises Frontier Level Performance Through Multi-Model Routing
AI 摘要
GitHub 推出 Project HydraFusion 研究预览，为 GitHub Copilot 提供运行时多模型编排能力，通过 Single、Cascade、Critique 三种执行模式动态路由请求。该系统在 TerminalBench 2.1 上相比 Claude Opus 5 提升 4.9 个百分点任务质量并降低 67% 预估成本，在内部 CheckpointBench 上质量基本持平但成本降低 65%。目前该功能已面向所有 Copilot 订阅层级开放，可通过 CLI 的 /experimental 配置启用。
正文节选
GitHub has introduced Project HydraFusion, an advanced research preview for GitHub Copilot designed to deliver frontier-level coding intelligence through runtime model orchestration. Building on previous automatic model selection capabilities, HydraFusion treats workflow execution as an optimisation challenge, dynamically building full execution plans using models from multiple providers to handle core developer tasks. The system evaluates incoming prompts using explicit capability signals tailo