Anthropic Introduces an In-App Browser for Claude Cowork

Anthropic has introduced an in-app browser for Claude Cowork in its desktop app, following OpenAI's addition of a cloud-based browser to ChatGPT Work. The browser is built into the Mac desktop app, allowing remote control via mobile or web when the app is running. It differs from OpenAI's Codex browser by focusing on general web tasks rather than development, and offers manual login or cookie import from Chrome, Edge, or Firefox (not Safari). Security features include isolation from everyday browsing, permission requests, high-risk site blocking, and prompt injection protections. This move reflects a trend toward isolated agent browsing, with both Anthropic and OpenAI expected to iterate on the concept.