Discussion

• @ednewtonrex Ed Newton-Rex on x

  Wait... so users of OpenAI's Atlas browser can opt-in the web pages they browse - *which belong to other people* - to AI training? Cool cool https://openai.com/... [image]

• @fidjissimo Fidji Simo on x

  ChatGPT Atlas is here! Our new browser has ChatGPT built in so it can help you across the web and, if you want, remember what you've done online and use that context for future requests. More of my thoughts on why we built this here: https://fidjisimo.substack.com/ ... [video]

• r/BetterOffline r on reddit

  Clearly it's the future /s Introducing ChatGPT Atlas

• r/technology r on reddit

  Introducing ChatGPT Atlas - The browser with ChatGPT built in

• r/accelerate r on reddit

  Introducing ChatGPT Atlas |  OpenAI

• r/OpenAI r on reddit

  Meet our new browser—ChatGPT Atlas.

• r/ChatGPT r on reddit

  OpenAI's AI-powered browser, ChatGPT Atlas, is here

• r/artificial r on reddit

  One-Minute Daily AI News 10/21/2025

• r/singularity r on reddit

  New OpenAI livestream at 10amPT.  Possibly launching a browser?

• @brave @brave on x

  The security vulnerability we found in Perplexity's Comet browser this summer is not an isolated issue. Indirect prompt injections are a systemic problem facing Comet and other AI-powered browsers. Today we're publishing details on more security vulnerabilities we uncovered.

• @maxwinebach Max Weinbach on x

  Atlas needs support for Apple Keychain passkeys ASAP

• @rahll Reid Southen on x

  Have fun with that new OpenAI browser, I hope you like your accounts being hijacked via hidden prompt injection.

• @catebligh Cate Bligh on x

  I asked the ChatGPT assistant in Atlas to give itself a name when signing emails I want it to send. I said it could be anything! It chose: Nova [image]

• @matthewberman Matthew Berman on x

  BIG realization: ChatGPT Atlas makes web apps much more powerful than desktop apps. For example, I use Slack as a desktop app. But if I used it as a web app (it's available as both), it would have the power of ChatGPT built into it. I'm incentivized to use apps in the browser

• @robhope Rob Hope on x

  LOTS to love in this ChatGPT Atlas landing page but the top navigation is a fail. Been trying to teach this “hide primary nav on deeper landing pages” lesson for years and finally got a cracking example. FWIW I'm never on socials to throw stones at anyone shipping good work. [ima…

• @daniel_mac8 Dan Mac on x

  Used ChatGPT Atlas, OpenAI's new AI Browser, for the last 45 mins. Which means I am now an expert. @OpenAI cooked with this one. It's another step in ChatGPT becoming the “walled garden” ecosystem for consumer AI aka the Apple of AI. Why? > Integrates with ChatGPT's memory [video…

• @p1njc70r @p1njc70r on x

  Atlas is definitely vulnerable to Prompt Injection [image]

• @_nghiatran Noah Tran on x

  tried chatgpt Atlas today, but it's weird that this browser will track every move or interaction with the app, like - click on the Address Bar - App goes background/foreground - page load - open url .... and of course, it's all anonymous, but it's still weird [image]

• @ecommerceshares @ecommerceshares on x

  Do NOT install any agentic browsers like OpenAI Atlas that just launched. Prompt injection attacks (malicious hidden prompts on websites) can easily hijack your computer, all your files and even log into your brokerage or banking using your credentials. Don't be a guinea pig.

• @pedrodias Pedro Dias on x

  If I ask ChatGPT Atlas, “what's my user agent” I get a slightly different reply than what it really is [image]

• @yuchenj_uw Yuchen Jin on x

  @deredleritt3r Exactly, it could browse some website with prompt injection, and then I'm screwed.

• @yuchenj_uw Yuchen Jin on x

  It's also scary to give an incompetent agent access to all my passwords and data. What if it goes crazy?

• @stephenrobles Stephen Robles on x

  Installed @OpenAI Atlas and was excited to compare with @perplexity_ai Comet, but my main use case (which is refreshing an Apple Podcasts webpage and clicking publish), it apparently can't do... [image]

• @amritwt Amrit on x

  the new atlas browser does not have an ad blocker by default sticking to comet

• @mysteryguitarm Joe Penna on x

  My first attempt to use ChatGPT Atlas. Type in “what's...” autocomplete adds “...my ip?” Sure, let's give that a try. Then... uh... [image]

• @ivan_bezdomny Nikolai Yakovenko on x

  My thoughts are similar to Simon's here. I have zero desire to give an AI browser access to my calendar, email, etc. And not sure what I would get out of it. Unlike ChatGPT which was awesome and obvious right away. But others will find things maybe. [image]

• @scaling01 @scaling01 on x

  this ist one of those “feel the AGI moments” yeah sure like all the other launches too it really loses its meaning when everything is AGI

• @joeblau Joe Blau on x

  Works in ChatGPT Atlas! [image]

• @altryne Alex Volkov on x

  OpenAI just dropped Atlas — a web browser with ChatGPT built in, not bolted on. The browser is the agent now. Tabs are prompts. The search bar is dead. Welcome to the post-URL era. P.S the browser wrote this on its own

• @arlanrakh Arlan on x

  The new browser from @OpenAI has the most beautiful UI out of all browsers. Here it is signing in to @nozomioai for me, so your coding agents can perform 30% better. [video]

• @mrjasonchoi Jason Choi on x

  Two views on ChatGPT's new browser, Atlas, for the same query. Think I prefer the AI chatbot view to the old school search engine view: [image]

• @dkundel Dominik Kundel on x

  With ChatGPT Atlas, every coding app is now a vibe coding app 😄 [video]

• @ben_mathes @ben_mathes on x

  Can't wait for people to start sending emails with prompt injection attacks in them so that you open up your browser agent on your Gmail tab and it leaks your Gmail

• @maxwinebach Max Weinbach on x

  OpenAI, please please please please please let me set the default model in Atlas or at least use Auto I hate ChatGPT 5 Instant. I hate that model so much. I'd remove it if I could. [image]

• @sigkitten @sigkitten on x

  I almost feel bad for the people who worked on this browser. It's a lot of effort, and they did a really good job. They even made a tiny (1.4MB) classifier to route your dumb questions to either google or chatgpt. They must have spent a ton of time on these pretty Lottie

• @effthealgorithm Katherine Argent on x

  Excited to use OpenAI's browser? You should read this first.

• @npew Peter Welinder on x

  OpenAI is a great place for anyone who loves building product. 2025 so far: o3-mini, Deep Research, Operator, GPT-4.1, ImageGen, GPT-5, Codex, Pulse, Sora 2, AgentKit, and now Atlas. (probably missed a few!)

• @joedevon Joe Devon on x

  As I was afraid of, Atlas doesn't have some trick to defeat the deadly trifecta security issues of Chat + Browser. As much as I'm dying to use it, I'll wait for infosec to figure out a way to fix it. Hopefully. One day. Maybe.

• @simonw Simon Willison on x

  We have a few of these browser agent products now - Perplexity Comet and Brave Leo and Claude for Chrome have been around for a few months now Anyone finding value in them? What have you used them for that genuinely saved you time?

• @mgrczyk Michael on x

  @simonw Important to keep in mind that “privacy” in the sense that you understand it is not a concept for ~100% of internet users

• @simonw Simon Willison on x

  It's neat to see them encourage developers to add ARIA tags to pages though, an “agent” can be thought of as effectively another form of assistive technology [image]

• @clairevo Claire Vo on x

  extreme early thoughts on chatgpt atlas browser: - yes, we want operator but browser-first (always feels awk to send AI off on it's on little virtual machine) - yes, we want chatgpt w a browser - i dunno, do consumers really want AI wrapping their _whole_ browser (will require to…

• @simonw Simon Willison on x

  Wrote up my first impressions of ChatGPT Atlas, OpenAI's new browser - I remain unconvinced by the entire category of “browser agents”, the security and privacy challenges still feel insurmountable to me https://simonwillison.net/...

• @mattburgess1 Matt Burgess on bluesky

  “The security and privacy risks involved here still feel insurmountably high to me - I certainly won't be trusting any of these products until a bunch of security researchers have given them a very thorough beating”  —  simonwillison.net/2025/Oct/21/ ...

• @chris.blue Chris on bluesky

  “I'd like to see a deep explanation of the steps Atlas takes to avoid prompt injection attacks.”  —  Yup.