Dia vs MoltBrowser

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.

MoltBrowser is a free, open-source AI browser with an embedded on-device model and privacy features. Its page-aware AI can summarize articles, explain code, extract table data, and translate pages. It runs open models such as Llama, Mistral, Phi, and Qwen locally; the project also documents using personal keys with OpenAI, Anthropic, Gemini, and compatible endpoints. Its agent can click, scroll, navigate, and fill forms, and tasks can be scheduled to run automatically. Browsing memory and AI conversations are stored on the device; conversation history can be searched, exchanged as JSON, or wiped in one action. MoltNet routes traffic over Tor and allows exit-country selection, while MoltShield blocks ads and trackers, including YouTube ads, and dismisses cookie banners. The maker says the browser alters device fingerprint signals and masks the user's IP address. Builds are listed for Apple Silicon macOS, Windows 10/11 x64, and Linux x64. Chrome extension compatibility is advertised. iOS and Android are listed as in development, not as available builds.