GitHub 发布 Copilot Fusion，动态调度 Anthropic 与 OpenAI 模型
GitHub 新出的 Copilot Fusion 会自动在 Claude 和 GPT 模型里挑着用，跑分只比 Opus 5.5 低 2 分，成本却便宜一半。
GitHub 在 GitHub Copilot 中推出 Copilot Fusion，一个运行时编排系统，会在 Claude Opus 5.5、Claude Sonnet 5.5、GPT-6 Astra、GPT-6 Sol 等模型间自动选择，以优化性能、成本和延迟。在 Artificial Analysis Coding Agent Index v2.0 中，其 max 设置每任务成本为 5.59 美元，仅为 Claude Code 用 Opus 5.5（11.42 美元）的一半左右，成绩低 2 分。它在 Terminal-Bench 4.0 拿到 71 分排名第一，FrontierCode 得 51 分排第三，每任务消耗 7.2M token，约为 Claude Code 中 Opus 5.5 的一半。Token 费用按实际调用的底层模型计费。
GitHub has released Copilot Fusion in GitHub Copilot, which orchestrates between Anthropic and OpenAI models. It scores 2 points below Opus 5.5 in Claude Code at half the Cost per Task in the Coding Agent Index
GitHub describes Copilot Fusion as a runtime orchestration system, which selects and coordinates models to optimize performance, cost, and latency for each task. Copilot Fusion chooses between a number of models from Anthropic and OpenAI, including Claude Opus 5.5, Claude Sonnet 5.5, GPT-6 Astra, and GPT-6 Sol. We benchmarked its max setting in GitHub Copilot CLI in the Artificial Analysis Coding Agent Index v2.0.
Token costs are charged based on the underlying models used to complete a request.
Key takeaways:
➤ Cost-efficient for near-frontier performance: Copilot Fusion in GitHub Copilot costs $5.59 per task, versus $11.42 for Claude Code with Opus 5.5 (max). Devin Fusion with Opus 5.5 (max) + GPT-6 Luna (high) scores 62 at $8.00 per task.
➤ Slight lead in Terminal-Bench 4.0: The Coding Agent Index v2.0 weights its three constituent benchmarks equally. Copilot Fusion in GitHub Copilot leads Terminal-Bench 4.0 with a score of 71. It ranks third on FrontierCode in the chart at 51, behind Claude Code with Opus 5.5 (max) at 56 and Devin Fusion with Opus 5.5 (max) + GPT-6 Luna (high) at 54. Its SWE-Atlas-QnA-AA score lags at 57, between GPT-6 Astra in Codex and Gemini 4 Argon in Antigravity CLI.
➤ Half the token use of Opus 5.5 in Claude Code: GitHub Copilot Fusion used 7.2M tokens per task in the Coding Agent Index, approximately half of the tokens used by Claude Opus 5.5 in Claude Code, and 30% less than Devin Fusion with Opus 5.5 (max) + GPT-6 Luna (high).
