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The next frontier of agentic development is here, and you are in control.  Today we announced releases that will keep you in the flow with your agents, all on the GitHub platform.  ⬇️
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➡️ @AnthropicAI's Claude Fable 5 is now re-enabled and generally available in GitHub Copilot.
📣 Claude Fable 5, the first in @AnthropicAI's Mythos model class, is now generally available and rolling out in GitHub Copilot. It is designed for long-horizon, autonomous coding and knowledge-work tasks. Try it out in @code or the GitHub Copilot app. ⬇️ github.blog/changelog/2026-0…
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Maintainers spend hours every week closing duplicate issues. 😮‍💨 That changes with duplicate detection. Surface up to 3 matching issues as you create one, before you hit submit.
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Now in public preview 👇 github.blog/changelog/2026-0…
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GitHub retweeted
Seer, Sentry's AI debugger, analyzes your issues and finds the root cause. Now you can pass that analysis directly to a @GitHub Copilot agent which picks up the context, generates a fix, and opens a pull request. Learn more in our latest video with @pauljaffre 👇
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The best thing about building in the open? Nothing gets lost. Anders Hejlsberg, creator of TypeScript and C#, on 12 years of issues and decisions, all searchable. "It didn't just disappear into some email I can't find anymore." Take a trip down memory lane and tell us: what was your first open source contribution?
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📣 @AnthropicAI's Claude Sonnet 5 is now generally available and rolling out in GitHub Copilot. Early testing for Claude Sonnet 5 showed: • strong results across a range of coding scenarios, particularly for performance on CLI-style tasks. • excellent prompt-cache utilization and competitive latency at lower effort levels. Try it out in the GitHub Copilot app ⬇️ github.blog/changelog/2026-0…
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Git 2.55 is here with a new incremental repacking strategy, more flexible ways to edit history, and much more. Check out our highlights from the latest release ✨ github.blog/open-source/git/…
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GitHub Copilot turns 5 today! 🎂 Share the projects you've built with Copilot. 👇
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We benchmarked the GitHub Copilot agentic harness against the harnesses that ship leading models natively. Holding the model and task fixed across SWE-bench Verified, SWE-bench Pro, SkillsBench, TerminalBench, and Win-Hill, the results were clear: ✅ Task resolution on par with model-vendor harnesses ✅ Fewer tokens across most configurations 💡 A key learning: With GitHub Copilot supporting more than 20 models, you're free to pick efficiency or peak quality per task.
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Using the /impeccable skill built into the GitHub Copilot app, @cassidoo gave her PocketCal app a design refresh! ✨ Enable in Settings > Experimental to try it out. gh.io/app?utm_source=social-…
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Copilot code review now supports AGENTS.md files. 💡 Here's how to customize for more context-aware reviews. ▶️
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The story around AI used to be about generating more. For many neurodivergent professionals, the bigger benefit is offloading invisible labor: remembering what you promised, the dozen tabs open in your brain, the thread you meant to reply to. Senior director @ashleymcnamara shares why she calls automations in the GitHub Copilot app an accessibility tool. ⬇️ github.blog/developer-skills…
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GitHub Universe: Not your average tech event. Come for the sessions, stay for the joy (and donuts). Join us IRL this year, you still have the chance to get our Super Early Bird pricing until July 8. Get your ticket 👇 githubuniverse.com/?utm_sour…
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To improve accessibility in open source, we've worked through programs, partnerships, and open tooling built with real projects and communities. Learn more about what we've done, and what you can do to help make open source more inclusive. github.blog/open-source/from…
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Register for Open Source Accessibility Community Day on July 9 ⬇️ gh.io/open-source-accessibil…
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Bring real code intelligence to your terminal. The new LSP Setup skill for GitHub Copilot CLI adds semantic context (like definitions, references, and types) across 14 languages. Here’s how to get started 👇 github.blog/ai-and-ml/github…
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