Brave Leo

Brave Leo is the AI assistant built into the Brave browser, designed from the ground up for privacy. Unlike AI tools that require accounts and store conversation history, Leo processes queries without tying data to user accounts or selling it to advertisers, and conversations aren't used for model training. As of 2026, the free tier defaults to Meta's Llama 3.1 8B and also offers Alibaba's Qwen 3, Anthropic's Claude Haiku 3.5, and GLM models — a lineup that has fully replaced the original Mixtral 8x7B default. The Leo Premium subscription ($14.99/month, or $149.99/year for about two months free, covering up to five devices) adds Claude Sonnet, DeepSeek R1, the larger Llama 3.1 70B, and higher rate limits. Leo can summarize web pages, PDFs, Google Docs, and Google Sheets, answer questions about current content, write and rewrite text, translate between languages, and assist with coding tasks, including voice-to-text questioning on iOS. It integrates into the Brave sidebar and is accessible on both desktop and mobile. For users who want AI assistance without the privacy trade-offs of cloud-logged conversations, Leo fills a genuine niche. The lack of persistent memory is by design: each session starts fresh.