OpenAI has decided its AI browser experiment has run its course, pulling the plug on ChatGPT Atlas less than a year after launch and moving its browser-based agent features into ChatGPT and Codex. The company said Atlas will stop working on August 9 as it rolls out the newly unveiled ChatGPT Work platform. Atlas arrived last October with no shortage of ambition. Rather than trying to out-Chrome Chrome, OpenAI wanted to bolt ChatGPT directly onto the web, promising a browser that could read pages, rewrite them, answer questions, and eventually start doing the clicking itself. However, within days of its debut, security researchers demonstrated prompt injection attacks that could manipulate the browser's AI assistant into following malicious instructions embedded in web pages. A few days later, researchers uncovered another flaw that allowed malformed URLs to cause Atlas to expose information about previously visited sites. Neither flaw proved fatal, but they quickly exposed the gap between an AI browser on launch day and one ready for the open web. OpenAI hasn't fully abandoned the idea of AI-powered browsing, but appears to have decided it doesn't need a standalone browser to deliver it. ChatGPT Work looks less like a browser and more like OpenAI's attempt to become the operating system for office work. The desktop application combines ChatGPT, Codex, and Atlas into a single package that can connect to files and business applications, browse the web, generate documents, spreadsheets, presentations, and websites, and stick with long-running projects for hours at a time instead of answering one prompt after another. Powering it all is GPT-5.6, OpenAI's latest model series, which the company says is better at reasoning through multi-step tasks and producing work that follows users' templates and reference material. The pitch is different this time around too. Atlas was all about rethinking the browser, but ChatGPT Work is about getting office workers to spend more time with OpenAI. To help with that, OpenAI has bundled plugins into a single directory, allowing ChatGPT to pull context from tools including Slack, Microsoft Teams, Google Drive, SharePoint, email, calendars, CRMs, and project trackers, either automatically or when users explicitly call them into a prompt. For developers, the biggest change is that Codex is no longer treated as a separate product. Codex is losing its standalone app and moving into ChatGPT Work, picking up inline diff editing, pull request reviews, and multi-repository support. ChatGPT Work is available to all plans on desktop, rolling out to Plus, Pro, Business, Enterprise, and Edu on web and mobile over the next few days. AI browsers have attracted no shortage of hype over the past year, but convincing people to swap Chrome for an AI-first alternative was always going to be a taller order than bolting another chatbot onto the web. ®