Comet

An AI-native web browser with chat and skills built into the URL bar.

An AI-native desktop web browser from The Browser Company, the team behind Arc. Dia bakes a chat assistant and reusable 'skills' directly into the address bar, with awareness of your open tabs and browsing history, so you never need to copy context into a separate chatbot. It launched publicly on macOS in 2025. A free tier covers light AI use; a $20/month Pro plan removes the AI usage limits.

OpenAI's web browser with ChatGPT built in — sidebar, memories, and agent mode.

OpenAI's Chromium-based web browser with ChatGPT woven through it: a sidebar that can summarize, compare, and answer questions about any page, optional browser memories that carry context across sessions, and an agent mode that navigates sites and completes multi-step tasks on your behalf. It launched on macOS in October 2025, with Windows, iOS, and Android versions announced. Free with any ChatGPT account; agent mode requires a paid plan.

AI-augmented search. Cited answers, consumer + Sonar API.

Hybrid search engine that returns synthesized answers with inline citations rather than a list of links. Ships a consumer product and the Sonar API for adding cited search to your own apps and agents.