Everything announced at GitHub Universe 2026: opening keynote recap

By GitHub

Categories: Product, Tools

Summary

GitHub shipped multi-agent coordination for developers at scale: Copilot Fusion cuts costs 50% while matching Claude Opus performance, and Projects auto-spawns agents across repos without micromanagement. The platform now handles 225M developers with rebuilt Git infrastructure enabling parallel branch writes.

Key Takeaways

  1. Copilot Fusion uses model orchestration (single/cascade/critique patterns) to achieve 60 score on Coding Agent Index—within 2 points of Opus 5.5 Max—at 50% lower cost and 40% faster execution per task.
  2. Copilot Projects auto-assigns agents to repos based on task requirements, eliminating manual agent management and enabling developers to 'get out of that business completely' and focus on results.
  3. Cross-surface continuity: start debugging on mobile in cloud sandbox, pick up in VS Code or CLI—all powered by unified Copilot harness now available on Microsoft Foundry for custom agents.
  4. Code Review Max (new tier) achieved highest F1 score on ReviewBench for high-severity issues; Copilot Code Review already surfaced 200M findings and is free without subscription.
  5. Git infrastructure redesigned: replaced full-repo locking with branch-level locking, allowing agents on different branches to execute in parallel—critical for 100+ busiest repos where 25ms latency mattered.

Related topics

Transcript Excerpt

Jay: Welcome to Universe. When we were here last year, we talked about how 2026 was going to be the year where developers and all of their agents showed up for work on GitHub. There are now over 225 million developers on GitHub. The delta between 2024 and 2026 is remarkable. As you can see from this visualization of Actions jobs. And today, we’re going to show you some of these primitives at work. So let’s welcome Cassidy to the stage to take us through it. Cassidy: I’m very excited to show you what we’re going to build. So hello. Hello. Let’s get some work done. So this is the GitHub Copilot app. If you haven’t seen it yet, it’s a really awesome single location for working with agents across multiple projects, integration with external tools, automations, and so much more. Now, I just ask…

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