Leon by Louis Grenard
Overview
A self-hosted personal assistant whose 2.0 developer preview adds an agent mode with step-by-step planning, tool use, layered memory and desktop and browser computer use, alongside deterministic skills.
Status: The agent features are in the 2.0 developer preview (develop branch); the stable release is the older assistant.
The GitHub repository has 17.6K stars, 97 of them added in the last 30 days.
Leon usage and attention over time
Download the raw daily series: leon.csv
Key facts
| Maker | Louis Grenard |
|---|---|
| Type | Open-source personal AI assistant |
| First released | February 2019 |
| License | MIT |
| Main language | TypeScript |
| Open issues and PRs | 113 |
Pricing
Free MIT-licensed self-hosted software; remote model providers are optional and billed by the provider.
Source: official pricing page, checked Oct 6, 2026. Prices change often; confirm before you buy.
Pulse Score breakdown
Each component is scored 0 to 100 from public signals; a dash means no data for it. Methodology.
Leon alternatives
| # | Agent | Pulse | Downloads 7d | 7d | 30d | VS Code installs | Stars | Latest release | Price | Last 90 days | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2 |
OpenClawOpenClaw Foundation (nonprofit); created by Peter Steinberger |
80 | 4.5M | up 34.8% | up 28.5% | — | 391K+162/day | 2026.9.83d ago | Free (OSS) | ||
| 14 |
DeepSeek HarnessDeepSeek |
62 | 452K | down 7.9% | — | — | 244K+773/day | — | Free | ||
| 29 |
Hermes AgentNous Research |
54 | 50.2K | up 37.3% | down 39.8% | — | 251K+259/day | 2026.9.2412d ago | Free (OSS) | ||
| 39 |
ManusButterfly Effect Pte. Ltd. (Manus AI), Singapore |
51 | — | — | — | — | — | — | Free + $20/mo | ||
| 77 |
GensparkGenspark Inc. (MainFunc) |
42 | — | — | — | — | — | — | Free + $24.99/mo | ||
| 85 |
nanobotHKUDS |
40 | 14.1K | up 19.2% | up 27.5% | — | 48.8K+29/day | 0.3.521d ago | Free (OSS) | ||
| No agents match that filter. | |||||||||||
Leon FAQ
How much does Leon cost?
Free MIT-licensed self-hosted software; remote model providers are optional and billed by the provider.
Is Leon open source?
Yes. Leon is open source, released under the MIT license.
How popular is Leon?
The GitHub repository has 17.6K stars, 97 of them added in the last 30 days.
What are the alternatives to Leon?
The closest alternatives in the same category by Pulse Score are OpenClaw, DeepSeek Harness, Hermes Agent, Manus.
Where these numbers come from
GitHub: leon-ai/leon. Site rank: getleon.ai on the Tranco list. See data sources for how each one is collected.
Product facts and pricing were checked against: github.com, getleon.ai.