Brave's privacy-focused AI assistant built into the browser.
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Overview Brave Leo is the AI assistant built into the Brave browser — a chat interface that answers questions, summarizes pages, and translates content while going out of its way to not remember anything about you afterward. Launched in 2023 and matured through several LLM upgrades since, Leo in 2026 is the sharpest answer for anyone who wants a browser integrated AI assistant without accepting the query logging, model training, and account linked telemetry that come standard with the Chrome plus ChatGPT or Edge plus Copilot stack. It is the privacy first play in the AI browser category, and it is one of the few products in that category where the privacy story actually holds up to scrutiny. At the center of Leo is a chat panel that opens as a sidebar in any Brave tab. Ask a question, paste content, summarize the current page, translate a passage, or generate a response — Leo handles all of it through a rotating menu of underlying models: Mixtral, Llama 3, Claude, and Brave's own hosted model for anonymous default use. The routing between models is user controlled on Premium; the free tier uses a smart default. Critically, none of your queries are logged to a user account, none are used to train the underlying models, and Leo works without a Brave account at all — which is essentially a unique posture in the mainstream AI assistant market. The one line positioning: Brave Leo is the AI assistant you use when you like…