ChatGPT Atlas vs Dia
Which should you use? A side-by-side look at what each one does, who it suits, what it costs, how hard it is to set up, and where each falls short.
AI tool · Freemium
OpenAI's web browser with ChatGPT built in, including a sidebar, browser memories and agent mode.
AI tool · Freemium
The Browser Company's AI browser that lets you chat with open tabs and run reusable skills.
The short answer
Choose ChatGPT Atlas if you need…
- ChatGPT users
- Letting an agent complete web tasks
Choose Dia if you need…
- Chatting across open tabs
- Arc users wanting AI
Side-by-side
| ChatGPT Atlas | Dia | |
|---|---|---|
| Type | Plugins & extensions · AI browsers | Plugins & extensions · AI browsers |
| Price | Freemium | Freemium |
| Platforms | macOS | macOS, Windows |
| Works with | Chrome | Chrome |
| Hands-on tested by us | Not yet | Not yet |
| Last checked | 2026-10-29 | 2026-10-29 |
What each one is
ChatGPT Atlas
OpenAI's web browser with ChatGPT built in, including a sidebar, browser memories and agent mode. Deep ChatGPT integration. Agent browsing raises prompt-injection and privacy risks; limit what it can access.
Dia
The Browser Company's AI browser that lets you chat with open tabs and run reusable skills. Thoughtful AI integration. Young product, and an AI browser sees everything you browse.
Best for
ChatGPT Atlas
- ChatGPT users
- Letting an agent complete web tasks
Dia
- Chatting across open tabs
- Arc users wanting AI
Strengths
ChatGPT Atlas
- ChatGPT sidebar on any page
- Agent mode
- Browser memories
- Chromium extensions
Dia
- Chat with tabs
- Custom skills
- Writing help in pages
- Chromium-based
Frequently asked questions
What is the difference between ChatGPT Atlas and Dia?
ChatGPT Atlas: OpenAI's web browser with ChatGPT built in, including a sidebar, browser memories and agent mode. Dia: The Browser Company's AI browser that lets you chat with open tabs and run reusable skills. ChatGPT Atlas suits chatgpt users, while Dia suits chatting across open tabs.
Are ChatGPT Atlas and Dia free?
ChatGPT Atlas: Freemium. Dia: Freemium.
What are other alternatives to ChatGPT Atlas and Dia?
Other options people compare them with include Comet.
Keep comparing
Built from our catalogue entries for both products: open-source details come from each project's README (AI-assisted, refreshed weekly) and GitHub data; AI-tool details are editorial. Spotted something wrong? Let us know from either product's page.