Forward Future Tools Library
Leo
Leo adds an AI assistant to the Brave browser for summarizing tabs and documents, answering questions, translating text, generating content, and analyzing information with privacy controls for researchers, students, and everyday web users.
Try Leo →
brave.com·Freemium
›What is Leo?
Leo is an AI assistant built into the Brave browser on desktop and mobile. It can summarize webpages, PDFs, Google Docs, and Google Sheets, answer questions, translate text, analyze content, generate emails and other writing, and suggest code. Users can access it from the address bar, toolbar, or mobile menu without creating an account.
›What are the pros and cons of Leo?
Strengths
Built into Brave, so users can invoke it from the address bar, toolbar, or mobile menu
Does not require an account or login
Brave says chats are not retained or shared and are not used for additional model training
Works with several model families, including Claude, Mixtral, and Llama
Supports PDFs, Google Docs, Google Sheets, and browser-tab context
Trade-offs
The free experience has reasonable daily limits on the best models
Higher model access, faster responses, and higher rate limits require Leo Premium
Leo is tied to the Brave browser rather than being a standalone assistant
Review coverage reports accuracy as a significant concern
›What are Leo’s key features?
Summarizes webpages, PDFs, Google Docs, and Google Sheets
Answers questions about the current browser tab and uses Brave Search for richer, current information
Generates articles, essays, emails, and other content
Translates text and provides coding help with sample code and database queries
Supports models from Mixtral, Anthropic's Claude, and Meta's Llama
Offers temporary chats, locally saved chat history, and preferences that carry across chats
Allows users to connect their own local or remote AI models
›What are the best use cases for Leo?
Summarizing a long article or document without leaving the current tab
Extracting key points and related information from webpages, PDFs, and online documents
Drafting an email, essay, article, or other written content while browsing
Translating text between languages
Getting coding suggestions or sample database queries
Organizing browser tabs around a topic and gathering them in a new window
›What is the pricing for Leo?
Freemium
›Who is Leo best for?
researchersUseful for extracting summaries and related information from webpages, PDFs, and online documents while keeping the work inside Brave.
studentsStudents can use Leo to clarify readings, translate passages, summarize documents, and draft written material.
content creatorsA fit for content creators who want browser-based help drafting articles, essays, emails, and other text.
privacy-conscious usersThe no-login design and stated limits on chat retention, sharing, and model training suit users who prioritize privacy.
Not for
- People who do not want to use the Brave browser, because Leo is integrated into Brave rather than offered as a separate assistant.
- Users who need consistently high model limits without paying, because the free experience limits access to the best models.
- Users whose work requires highly reliable answers, given reported concerns about Leo's accuracy.
›What are the best Leo alternatives?
Notebook LMChoose this instead if your primary need is an AI research and writing assistant rather than an assistant attached to browser tabs.→
Perplexity AIChoose this instead if you want a dedicated generative search and answer engine.→
MerlinChoose this instead if you want ChatGPT-like capabilities integrated into a browser without choosing Brave.→
arXiv:2412.06617→