# Brave Leo privacy rating

AI assistant built into the Brave browser for chat, page summaries and writing help. Works without an account and can also use local or self-chosen models.

## Summary

Brave Leo scores 61 out of 100 (grade C) on the AI assistants criteria. It meets 3 of 8 criteria: no training on your data, limited chat retention and no account needed. It partly meets open source, no trackers or telemetry, no ads or data sales and runs locally. It does not meet independent audit. It is based in the United States: Five Eyes member; subject to the US CLOUD Act.

- Website: https://brave.com/leo/
- Source code: https://github.com/brave/brave-core
- License: MPL-2.0
- Jurisdiction: United States. Five Eyes member. Subject to the US CLOUD Act.
- Platforms: Windows, macOS, Linux, Android, iOS
- Home page trackers: none found
- Category: [AI assistants](https://privacyratings.com/ai-assistants/)
- Also rated: [Brave Browser](https://privacyratings.com/browsers/brave-browser/) (Browsers), [Brave Search](https://privacyratings.com/search-engines/brave-search/) (Search engines), [Brave Talk](https://privacyratings.com/video-calls/brave-talk/) (Video calls)
- Grade: C (61/100)

## Criteria

| Criterion | Answer | Note | Evidence |
| --- | --- | --- | --- |
| Open source | Partial | The browser code, including Leo, is open source under MPL-2.0. The Leo server is not. | https://github.com/brave/brave-core/blob/master/LICENSE |
| No trackers or telemetry | Partial | Privacy-preserving product and query analytics are on by default and can be turned off. No third-party analytics. | https://brave.com/privacy/browser/ |
| No ads or data sales | Partial | Leo has no ads and is funded by a Premium subscription, but Brave Ads can appear in the browser by default and can be turned off. | https://brave.com/privacy/browser/ |
| Independent audit | No | No independent audit is published. |  |
| No training on your data | Yes | Conversations are not used for model training. | https://brave.com/privacy/browser/ |
| Runs locally | Partial | Bring Your Own Model can connect Leo to local models, but it uses Brave's hosted models by default. | https://brave.com/leo/ |
| Limited chat retention | Yes | Prompts and responses are not stored on Brave's servers. History is stored locally on the device. | https://brave.com/privacy/browser/ |
| No account needed | Yes | No account or login is needed for the free version. | https://brave.com/leo/ |

Source: https://privacyratings.com/ai-assistants/brave-leo/
Edit: https://github.com/privacyratings/privacyratings.com/edit/main/ratings/ai-assistants/brave-leo.md