In short
How they differ.
Worked out from the makers' own pages, read Oct 20, 2026. Prices change; check before you pay.
- Both have a free plan.
- ChatGPT Work and Browser's cheapest paid plan is cheaper: $20 a month against $100.
- ChatGPT Work and Browser also has a web.
- ChatGPT Work and Browser shipped an update more recently (Aug 31, 2026).
Side by side
The details.
| ChatGPT Work and Browser | Dia | |
|---|---|---|
| Made by | OpenAI | The Browser Company of New York (Atlassian) |
| What it says it is | “Browser lets ChatGPT open websites, gather current information, and take action while you stay in control.” | “Dia is the browser for better days at work.” |
| Free plan | YesFree plan lists 'Limited ChatGPT Work access on desktop'; the pricing page shows no amounts. | YesFree 'Better Browser' tier has 'no AI features'. |
| Plans | Plus: $20 a monthPro: not in US$ | Better Answers: not in US$Better Days: $100 a month |
| Runs on | web, desktop app (macOS, Windows), browser extension (Chrome, Edge, Brave, Opera, Vivaldi) | macOS, Windows |
| Latest update | Use the browser extension in more browsers, Aug 31, 2026 | Welcoming The Browser Company to Atlassian, Sep 4, 2025 |
| Its terms | “Treat page content as untrusted context.”In its terms · ChatGPT Learn: Browser | — |
| Disputes | None on file | None on file |
| Sources | Prices, Oct 20, 2026 · Description · company-reported | Prices, Oct 20, 2026 · Description · company-reported |
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