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Prediction market on metaculus. On October 21, 2025, OpenAI [released](https://openai.com/index/introducing-chatgpt-atlas/) a web browser built around ChatGPT, called [ChatGPT Atlas](https://en.wikipedia.org/wiki/ChatGPT_Atlas): > With Atlas, ChatGPT can come with you anywhere across the web—helping you in the window right where you are, understanding what you’re trying to do, and completing tasks for you, all without copying and pasting or leaving the page. Early reviews suggest that Atlas [shows promise](https://www.pcmag.com/news/chatgpts-atlas-browser-shows-potential-but-its-no-chrome-killeryet) but is not yet worth switching to. And some have suggested that it is [particularly vulnerable to hacking](https://www.theregister.com/2025/10/27/atlas_vulnerability_memory_injection/). In releasing Atlas, OpenAI [opened another front](https://techcrunch.com/2025/10/21/openai-launches-an-ai-powered-browser-chatgpt-atlas/) in its rivalry with Google, who makes not only ChatGPT competitor [Gemini](https://en.wikipedia.org/wiki/Google_Gemini) but also [Chrome](https://en.wikipedia.org/wiki/Google_Chrome), by far [the world's most popular web browser](https://gs.statcounter.com/browser-market-share). Atlas was initially made available only for macOS, but OpenAI has promised that "Experiences for Windows, iOS, and Android are coming soon." That will be a must if OpenAI wants to take a chunk out of Chrome's market share. On January 21, 2026, OpenAI [released new features](https://www.pcmag.com/news/chatgpt-atlas-gets-new-tab-upgrades-still-no-windows-or-mobile-versions) for Atlas but has not provided an updated time-frame for the anticipated Windows release.
Resolves: 9/1/2026.