Dia vs Opera
Dia
diabrowser.com
Opera
opera.comSide by side
| Figure | Dia | Opera |
|---|---|---|
| Price from | $20/mo | $4/mo |
| Free plan | Yes | Yes |
| Free trial | Yes | Yes |
| Open source | — | — |
| Web | — | Yes |
| Windows | — | Yes |
| macOS | Yes | Yes |
| Linux | — | Yes |
| iOS | — | Yes |
| Android | — | Yes |
| Plans published | 3 | 4 |
| Spec score · Web browsers | 8.9 (#14) | 9.2 (#5) |
| Spec score · Agentic AI Browser Software | 8.6 (#5) | 8.5 (#6) |
| Browser engine | chromium | chromium |
| Built-in ad blocking | Yes | Yes |
| Cross-device sync | Yes | Yes |
| Extension support | chrome_store | both |
| Free plan | Yes | Yes |
| Headquarters | Brooklyn, New York, United States | Oslo, Norway |
| Supported platforms | both | Opera offers downloads for Windows, macOS, Linux, Android, iOS, and Chromebook. |
| Privacy controls | Users control memory and which tools connect to their workflow. | Opera lets users clear browsing data on exit, including history, cookies, passwords, and autofill data. |
| Product | Dia is an AI web browser with an assistant for questions and requests about the current page, other tabs, selected text, and browsing history. | Opera is a web browser with built-in tools for browsing, communication, and AI assistance. |
| Support | Dia directs users with questions to [email protected]. | Opera directs users to its Help Center, community forums, and bug report wizard for assistance and issue reports. |
Plans
Opera
- Opera browserFree
- VPN Pro — six months$5 a month
- VPN Pro — one month$8 a month
- VPN Pro — one year$48 a year
In their own words
Dia
Dia is a macOS web browser with an assistant for questions and requests about the current page, other tabs, selected text, and browsing history. The free plan includes profiles, tab groups, split view, picture-in-picture, ad and tracking blocking, and cross-device sync, but has no AI features. Better Answers costs $20 a month and adds AI answers and contextual chats. Better Days costs $100 a month and includes six times more usage than Better Answers, plus additional work features. AI usage is measured in Tasks, resets each billing cycle, and pauses at the limit unless the user buys additional usage. Extra usage is available in $20 credit blocks, which roll over for up to three months. Profiles can separate work, freelance, and personal tabs, logins, and AI contexts. Morning Brief gathers calendar, inbox, and key links; Skills let users save frequent requests for reuse. The plans page lists connections to Slack, Gmail, Notion, Microsoft Outlook, GitHub, Google Calendar, and Figma. Dia says it does not sell personal data or use browsing data to build ad profiles, and that Sync is end-to-end encrypted.
Opera
Opera is a free web browser for Android, iOS, Linux, macOS, Windows, and the web, with extension support and cross-device sync. Tab Islands group related tabs for collapsing or expanding. Built-in tools include an ad blocker that can also block cryptocurrency-mining scripts, plus a free VPN with no data cap and three general locations. Opera AI can use open-tab context, generate images, summarize PDFs, and translate or summarize YouTube videos. ChatGPT and Gemini are available from the sidebar, and Opera says its AI tools do not require sign-up. The sidebar also offers WhatsApp, Slack, Discord, Messenger, and Telegram, while Music Player supports Apple Music, Spotify, YouTube Music, and Deezer. Users can set browsing data—including history, cookies, passwords, and autofill data—to clear on exit. Opera browser costs nothing. VPN Pro is separate: plans cost $4 per month billed $48 yearly, $5 per month billed $30 every six months, or $8 per month billed monthly.