GitHub(@github)

Almost that time of year again 🌁 #GitHubUniverse kicks off October 29 in San Francisco. Grab your ...

GitHub (@github) — Mon, 19 Oct 2026 22:10:12 GMT

Almost that time of year again 🌁
#GitHubUniversee kicks off October 29 in San Francisco. Grab your pass or sign up to join us virtually ⬇️githubuniverse.com/?utm_source=Tw…V

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Agents don’t just help build features. They can help try to break them, too. In our latest GitHub P...

GitHub (@github) — Mon, 19 Oct 2026 19:36:19 GMT

Agents don’t just help build features. They can help try to break them, too.

In our latest GitHub Podcast episode, Sameen Karim takes us behind the scenes on building stacked PRs. Listen to it wherever you get your podcasts or at youtu.be/sbHoDdAalMI?si…

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AI has changed how devs work. Here are 3 career skills that will set you apart 👇 https://t.co/GTxlu...

GitHub (@github) — Sun, 18 Oct 2026 22:05:01 GMT

AI has changed how devs work. Here are 3 career skills that will set you apart 👇github.blog/ai-and-ml/ai-i…K

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The GitHub Security Lab used an open-source agent to find 24 Android vulnerabilities, including a lo...

GitHub (@github) — Sun, 18 Oct 2026 18:00:06 GMT

The GitHub Security Lab used an open-source agent to find 24 Android vulnerabilities, including a location leak in a navigation app with 10M downloads.

How to run the taskflows on your own project 💡github.blog/security/how-w…G

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Your workflows have changed with AI. How about your setup? Physical controls are back. Take the new...

GitHub (@github) — Sat, 17 Oct 2026 17:50:19 GMT

Your workflows have changed with AI. How about your setup?

Physical controls are back. Take the new Logitech MX Keypad, now directly integrated with the GitHub Copilot app.

This experience allows you to run agentic workflows with control, map a repeated prompt, start or resume a session, and help you stay in flow.
github.blog/news-insights/…

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What are your conference essentials? Grab a #GitHubUniverse pass to join us in-person October 28-2...

GitHub (@github) — Fri, 16 Oct 2026 22:38:08 GMT

What are your conference essentials? 

Grab a #GitHubUniverse pass to join us in-person October 28-29 or sign up to join us virtually ⬇️
githubuniverse.com/?utm_source=Tw…

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https://t.co/otZg9dIh7u has fully moved off CSS-in-JS to CSS Modules, resulting in 55% less server-s...

GitHub (@github) — Fri, 16 Oct 2026 18:03:27 GMT

GitHub.com has fully moved off CSS-in-JS to CSS Modules, resulting in 55% less server-side render time and 25% faster component init. x.com/i/article/2110…

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New in GitHub Transparency data: Learn about government takedown requests and reporting, and get a r...

GitHub (@github) — Fri, 16 Oct 2026 00:08:57 GMT

New in GitHub Transparency data: Learn about government takedown requests and reporting, and get a recap of 2026 state legislative sessions affecting open source.
github.blog/news-insights/…

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Psst, pass it around: We have a new and improved badge for GitHub Universe 2026 ✨ Grab your in-pers...

GitHub (@github) — Wed, 14 Oct 2026 23:20:11 GMT

Psst, pass it around: We have a new and improved badge for GitHub Universe 2026 ✨

Grab your in-person pass and secure a badge. Can't make it? Sign up to join us virtually. ⬇️
githubuniverse.com/?utm_source=Tw…

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⭐ We shaped our new repo star history API around production evidence and maintainer feedback. Now it...

GitHub (@github) — Wed, 14 Oct 2026 22:00:03 GMT

⭐ We shaped our new repo star history API around production evidence and maintainer feedback. Now it provides trends without returning individual identities or requiring unbounded database work.

The practical engineering tradeoffs that made it happen ⬇️ x.com/i/article/2110…

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Cake is always open source #NationalDessertDay

GitHub (@github) — Wed, 14 Oct 2026 18:55:03 GMT

Cake is always open source #NationalDessertDay

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🚀 @GoogleAI's Gemini 4 Argon is now generally available in GitHub Copilot. What we learned from ea...

GitHub (@github) — Tue, 13 Oct 2026 19:07:50 GMT

🚀 @GoogleAI's Gemini 4 Argon is now generally available in GitHub Copilot.

What we learned from early testing ⬇️
• It solved more tasks than previous Gemini models on every coding benchmark, with its largest gains in Copilot CLI.
• It checks its work thoroughly, testing edge cases before it finishes.

Use Gemini 4 Argon for complex coding, agentic, and reasoning tasks. Find it in the GitHub Copilot app, CLI, and @code.github.blog/changelog/2026…B

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Open the worst pull request you’ve got and try it out 👇 https://t.co/sTqDfD0F2C

GitHub (@github) — Mon, 12 Oct 2026 18:06:47 GMT

Open the worst pull request you’ve got and try it out 👇github.blog/engineering/us…C

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Any “is the user interacting?” check has to distinguish real user input from scrolls caused by your ...

GitHub (@github) — Mon, 12 Oct 2026 18:06:47 GMT

Any “is the user interacting?” check has to distinguish real user input from scrolls caused by your own side effects.

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One bug that held us back was “don’t correct while you’re scrolling.” It was a timestamp guard, and ...

GitHub (@github) — Mon, 12 Oct 2026 18:06:46 GMT

One bug that held us back was “don’t correct while you’re scrolling.” It was a timestamp guard, and our own programmatic scrolls refreshed it.

Toggle the sidebar, and the diff pane changes width. Wrapped lines reflow, and the surface emits a small scroll as it settles. The guard read that as your input and skipped the correction meant to keep your place. The file you were reading drifted off screen.

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What we shipped is a recurring measurement pass, gated on idle and scoped to roughly 2400px around t...

GitHub (@github) — Mon, 12 Oct 2026 18:06:46 GMT

What we shipped is a recurring measurement pass, gated on idle and scoped to roughly 2400px around the viewport. Mounted blocks are ground truth. Observers normally only flag a block for the pass. They don’t write heights themselves.

There’s one exception: a visible block resizing because of the user’s action can apply one synchronous correction before paint. That keeps the comment and code below it moving together without reopening the feedback loop.

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For the first design, we gave every dynamic block a ResizeObserver that wrote measured heights back ...

GitHub (@github) — Mon, 12 Oct 2026 18:06:45 GMT

For the first design, we gave every dynamic block a ResizeObserver that wrote measured heights back into the layout.

We built it, then rejected it. An observer that writes a height back into the layout it’s watching can retrigger itself, and the cost grows with every mounted block.

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A code row is a line at a known height. You can compute the whole geometry up front and never have t...

GitHub (@github) — Mon, 12 Oct 2026 18:06:45 GMT

A code row is a line at a known height. You can compute the whole geometry up front and never have to correct it.

Comments don’t have a predictable height. So we stopped forcing one geometry to serve both, and split the document into two independent height domains.

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Rendering a million-line diff is the easy part. 👀 Comments are what break it. Their height depends...

GitHub (@github) — Mon, 12 Oct 2026 18:06:45 GMT

Rendering a million-line diff is the easy part. 👀

Comments are what break it. Their height depends on markdown wrapping, expanded details, open reply boxes, and images still loading (none of which you know until you render).

Here's how we rebuilt the PR view in the GitHub Copilot app 🧵

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Continuous fuzzing finds real bugs, but it still needs someone to write harnesses, watch coverage, a...

GitHub (@github) — Sun, 11 Oct 2026 19:25:01 GMT

Continuous fuzzing finds real bugs, but it still needs someone to write harnesses, watch coverage, and triage every crash.

The GitHub Security Lab built the Fuzzing Taskflow to give that loop to an agent. You point it at a C or C++ repository, and it identifies entrypoints, analyzes the build, crafts harnesses, runs the AFL++ fuzzer, reads coverage, and creates a vulnerability report for each unique bug.

Check out how the pipeline works end to end 🔍github.blog/security/appli…h

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In a new survey of 1,039 GitHub users conducted by GitHub and the Yale Program on Climate Change Com...

GitHub (@github) — Sat, 10 Oct 2026 17:00:14 GMT

In a new survey of 1,039 GitHub users conducted by GitHub and the Yale Program on Climate Change Communication, we found:
• 80% were interested in tools for writing more energy-efficient code
• 78% wanted to learn best practices for reducing software’s environmental footprint
• 74% wanted ways to measure the environmental impact of their software or development process

Developers want more efficient software. What many lack is a clear way to find waste, measure improvements, and make the case for fixing it.

There’s an opportunity to turn that interest into normal engineering work. 💡github.blog/news-insights/…y

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GitHub Universe is typing... Cooking up something fun for you to build ⌨️ Make sure you grab your i...

GitHub (@github) — Fri, 09 Oct 2026 22:35:08 GMT

GitHub Universe is typing...

Cooking up something fun for you to build ⌨️ Make sure you grab your in-person pass ⬇️
githubuniverse.com/?utm_source=Tw…

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Ever been to a hackathon? Follow participants throughout their day, from badge to the final demo. ...

GitHub (@github) — Fri, 09 Oct 2026 17:57:37 GMT

Ever been to a hackathon? Follow participants throughout their day, from badge to the final demo. 

What you can learn from attending a hackathon ⬇️
github.blog/developer-skil…

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#GitHubUniverse is just around the corner. 👀 What will you be adding to your agenda? From verifyin...

GitHub (@github) — Fri, 09 Oct 2026 00:50:01 GMT

#GitHubUniverse is just around the corner. 👀 What will you be adding to your agenda?

From verifying AI-written code to securing npm dependencies, here are the sessions to keep in mind at this year's event. ⬇️github.blog/news-insights/…G

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Devs and agents are moving faster than ever. Secret protection needs to keep pace. GitHub’s new con...

GitHub (@github) — Thu, 08 Oct 2026 17:50:03 GMT

Devs and agents are moving faster than ever. Secret protection needs to keep pace.

GitHub’s new context-aware classifier checks candidate secrets in under 2 milliseconds and could more than double the number of secrets push protection prevents before they enter repository history.
github.blog/ai-and-ml/gith…

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What happens when low-quality contributions become one of the biggest pain points for open source ma...

GitHub (@github) — Thu, 08 Oct 2026 15:06:32 GMT

What happens when low-quality contributions become one of the biggest pain points for open source maintainers?

Camilla Moraes from GitHub’s Tiny Wins team joins the latest GitHub Podcast to talk about tackling the AI slop problem, listening to maintainers, and deciding what to fix next.

Watch the full GitHub Podcast on YouTube, listen to it wherever you find your podcasts, or find it at gh.io/podcast

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⚡️ @AnthropicAI's Claude Haiku 5.5 is now generally available in GitHub Copilot. ➡️ It's a lightwei...

GitHub (@github) — Wed, 07 Oct 2026 20:40:31 GMT

⚡️ @AnthropicAI's Claude Haiku 5.5 is now generally available in GitHub Copilot.

➡️ It's a lightweight model designed for fast, high-volume work like subagents, quick edits, and terminal tasks.
➡️ Our early testing showed that it matched Claude Sonnet 5 on many coding tasks while using significantly fewer tokens and steps.

Try it out in the GitHub Copilot app, CLI, or @code.
github.blog/changelog/2026…

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Local sandboxing for GitHub Copilot is now generally available 🙌 This allows Copilot to run comman...

GitHub (@github) — Wed, 07 Oct 2026 19:26:01 GMT

Local sandboxing for GitHub Copilot is now generally available 🙌

This allows Copilot to run commands in an isolated environment with controlled access to files, networks, system capabilities, and credentials so you have more granular control. It also gives enterprise teams a way to centrally manage policies.

Try it out in GitHub Copilot CLI, GitHub Copilot app or @code.github.blog/changelog/2026…3

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Learn more about how we are bringing local models and sandboxed tools to GitHub Copilot to help you ...

GitHub (@github) — Wed, 07 Oct 2026 18:12:43 GMT

Learn more about how we are bringing local models and sandboxed tools to GitHub Copilot to help you maintain both choice and control over your workflows ⬇️
gh.io/localdevelopme…

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📣 Coming soon to GitHub Copilot: intelligent local model routing. We are excited to announce the n...

GitHub (@github) — Wed, 07 Oct 2026 18:12:42 GMT

📣 Coming soon to GitHub Copilot: intelligent local model routing.

We are excited to announce the next step in our Project HydraFusion vision. GitHub Copilot will soon be able to automatically route tasks to a local model when it's most suitable, helping you save on AI credits.

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2022 ➡️ 2026 Here's your sneak peek at this year's #GitHubUniverse programmable badge. Grab your in...

GitHub (@github) — Wed, 07 Oct 2026 01:30:04 GMT

2022 ➡️ 2026

Here's your sneak peek at this year's #GitHubUniverse programmable badge. Grab your in-person pass and secure a badge ⬇️
githubuniverse.com/?utm_source=Tw…

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Git activity more than doubled between September 2025 and August 2026, reaching 473.3B events per mo...

GitHub (@github) — Tue, 06 Oct 2026 21:49:39 GMT

Git activity more than doubled between September 2025 and August 2026, reaching 473.3B events per month.

We’re rebuilding our Git infrastructure while GitHub keeps running, creating a foundation for agent-scale software development. x.com/i/article/2107…

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How do you know whether an AI code reviewer catches the issues that matter without adding noise? Re...

GitHub (@github) — Tue, 06 Oct 2026 18:35:01 GMT

How do you know whether an AI code reviewer catches the issues that matter without adding noise?

ReviewBench is a new open benchmark shaped by analysis of 103.9M GitHub pull requests, with 219 PRs across 19 languages.

Bring your own code review agent, evaluate it, and submit your results ⬇️
github.blog/ai-and-ml/gith…

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Git 2.56 is here. ⚡ The new git add --resolved stages only paths that are still marked as conflicted...

GitHub (@github) — Sun, 04 Oct 2026 17:10:02 GMT

Git 2.56 is here. ⚡ The new git add --resolved stages only paths that are still marked as conflicted, and refuses to stage them if conflict markers remain. One merge-base case dropped from 0.68s to 0.01s. 

The highlights 👇github.blog/open-source/gi…f

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Cool it on the tab hopping 🐇 Reviewing agent code usually means switching tabs. The GitHub Copilot...

GitHub (@github) — Sat, 03 Oct 2026 18:05:31 GMT

Cool it on the tab hopping 🐇

Reviewing agent code usually means switching tabs. The GitHub Copilot app puts the diff, terminal, and browser side by side to check, run, and preview.github.blog/ai-and-ml/gith…f

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💾 Save the date: GitHub Game Off returns November 1. The theme? █████ Join the jam now and be the...

GitHub (@github) — Fri, 02 Oct 2026 20:37:01 GMT

💾 Save the date: GitHub Game Off returns November 1.

The theme? █████

Join the jam now and be the first to know the theme when the clock strikes 13:37 PT.itch.io/jam/game-off-2…h

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Project HydraFusion and new models arrived in the Copilot model picker. Have you tried them out? 👀 ...

GitHub (@github) — Fri, 02 Oct 2026 16:42:34 GMT

Project HydraFusion and new models arrived in the Copilot model picker. Have you tried them out? 👀x.com/i/article/2106…0

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📣 We’re giving away ONE general admission pass to #GitHubUniverse this year! 👉 US 18+. Ends Octo...

GitHub (@github) — Fri, 02 Oct 2026 00:20:06 GMT

📣 We’re giving away ONE general admission pass to#GitHubUniversee this year! 

👉 US 18+. Ends October 5 2026. Enter heregh.io/winxk
📋 Rulegh.io/rulesRDn

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🎃

GitHub (@github) — Thu, 01 Oct 2026 19:57:06 GMT

🎃

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Just one command can help you stop leaking secrets into your public code. Give your repositories es...

GitHub (@github) — Thu, 01 Oct 2026 17:05:23 GMT

Just one command can help you stop leaking secrets into your public code.

Give your repositories essential security hygiene with gh-secure from the GitHub Security Lab. ✅ 

Install and use it in the Copilot app, Copilot CLI, or GitHub CLI.
gh.io/gh-secure

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What was your first pull request?

GitHub (@github) — Wed, 30 Sep 2026 23:56:01 GMT

What was your first pull request?

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👋 Project HydraFusion is now available in the GitHub Copilot app and @code. Choose it like any oth...

GitHub (@github) — Wed, 30 Sep 2026 17:44:04 GMT

👋 Project HydraFusion is now available in the GitHub Copilot app and @code.

Choose it like any other model. Behind the scenes it routes your task across multiple models to draft, critique, revise, or escalate, then hands you one result.github.blog/changelog/2026…x

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Learn more about the making of one of GitHub's most starred repos. https://t.co/xWnEECcSza

GitHub (@github) — Wed, 30 Sep 2026 00:16:05 GMT

Learn more about the making of one of GitHub's most starred repos.
youtube.com/watch?v=5VSwaU…

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For @openclaw, success really is the journey.

GitHub (@github) — Wed, 30 Sep 2026 00:15:22 GMT

For @openclaw, success really is the journey.

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More coffee = more contributions #NationalCoffeeDay

GitHub (@github) — Tue, 29 Sep 2026 21:09:03 GMT

More coffee = more contributions #NationalCoffeeDay

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📣 @OpenAIDevs GPT-6.1 Sol is now generally available in GitHub Copilot. You can use it for agentic...

GitHub (@github) — Tue, 29 Sep 2026 17:35:04 GMT

📣 @OpenAIDevs GPT-6.1 Sol is now generally available in GitHub Copilot.

You can use it for agentic coding and terminal workflows with strong multistep coding performance. In early testing, it reliably completed tasks while using noticeably fewer tokens and steps than earlier models in the GPT-6 and GPT-5.6 families.

Try it out in the GitHub Copilot app, CLI, and @code.github.blog/changelog/2026…Q

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Write it down, give it to GitHub Copilot, automate it. ✅ One marketer turned repetitive event ops i...

GitHub (@github) — Tue, 29 Sep 2026 03:05:00 GMT

Write it down, give it to GitHub Copilot, automate it. ✅

One marketer turned repetitive event ops into a single GitHub Issue form that runs itself. ⬇️
github.blog/ai-and-ml/gith…

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🆕 @AnthropicAI's Claude Sonnet 5.5 is now generally available in GitHub Copilot. Designed for well...

GitHub (@github) — Mon, 28 Sep 2026 18:19:51 GMT

🆕 @AnthropicAI's Claude Sonnet 5.5 is now generally available in GitHub Copilot.

Designed for well-scoped everyday work like building features and fixing bugs, Claude Sonnet 5.5 stood out for its efficiency in our early testing: It matched Sonnet 5 on coding tasks while using significantly fewer steps, tokens, and tool calls. Plus, it finished tasks noticeably faster. ⚡️

Try it out in the GitHub Copilot app, CLI, and @code.github.blog/changelog/2026…7

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Did you know? You can run agents in parallel in the GitHub Copilot app. Each session gets its own G...

GitHub (@github) — Sun, 27 Sep 2026 19:55:21 GMT

Did you know? You can run agents in parallel in the GitHub Copilot app.

Each session gets its own Git worktree and context, so you can build, review, and test all at the same time.

Here's how to get started 👇github.blog/ai-and-ml/gith…p

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Learn more about the GitHub Copilot app and Copilot CLI with your community. 💡 Join an in-person e...

GitHub (@github) — Sat, 26 Sep 2026 19:35:16 GMT

Learn more about the GitHub Copilot app and Copilot CLI with your community. 💡

Join an in-person event near you! ⬇️gh.io/join-dev-daysN

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