News · 2026-10-30

GitHub ships Copilot Fusion model orchestration and code review Max; Octoverse puts agents on 40% of pull requests

At GitHub Universe on 28 October 2026, GitHub made Copilot Fusion generally available: instead of picking a model per task, Fusion routes and orchestrates models behind one picker across three effort levels (Standard, High, Max). GitHub reports Fusion Max scored 60 on the Artificial Analysis Coding Agent Index, within two points of Claude Code running Opus 5.5 Max, at about half the average API cost per task, roughly half the tokens, and about 40% less time; users on paid plans get a limited-time 30% discount on model costs through Fusion, which bills each underlying model at its standard rate. Fusion is available on all Copilot plans in VS Code, the Copilot app, Copilot CLI and JetBrains IDEs, with an experimental preview of routing to supported local models. GitHub also introduced Copilot code review Max, which it says posted the highest F1 score on ReviewBench for high-severity issues, and Agent Merge, which watches a pull request and fixes failing workflows or merge conflicts in the cloud. The same day, Octoverse 2026 reported that more than 40% of pull requests on GitHub started with an agent's first draft in September, up from 17% in March (110 million in September alone, about 6x March's volume); agent-started pull requests merged within two weeks at 90% versus about 86% for the rest; 55% of Copilot's monthly active users now use agentic features, up from 35% a year earlier; and cloud-agent use grew 230% year over year.