Jan vs Leon
A side-by-side comparison of Jan and Leon, two Assistant tools, drawn from Ignaite's continuously-verified listings.
Compared from listings verified as of
Leon
AssistantOpen-source personal AI assistant built on tools, memory, and agentic execution.
View LeonAt a glance
| Attribute | Jan | Leon |
|---|---|---|
| Category | Assistant | Assistant |
| Pricing (differs) | FREE | BYO KEY |
| License | Open source | Open source |
| Deployment (differs) | Local | Self-host |
| Platforms (differs) | macOS, Windows, Linux, API | Web, macOS, Windows, Linux |
| Model support | Multi-model | Multi-model |
| Vendor (differs) | Menlo Research | Leon AI |
The honest brief
Jan
Bundles its own model runner so it works offline out of the box — no account, no telemetry, and no paid tier.
- Local-first; data stays on your machine
- Open source (Apache-2.0), no paid tier
- Bundled model runner + model hub
- BYO cloud keys when wanted
- Local OpenAI-compatible server
- More setup friction than LM Studio
- Limited tool-calling vs full agent stacks
- Local model speed bound by your hardware
- Smaller ecosystem than Ollama
Leon
Self-hosted, MIT-licensed personal assistant that runs on local models and context, not third-party services.
- Open source (MIT), free
- Runs fully self-hosted
- Local model + context support
- Tools, memory, agentic modes
- Mid-rewrite to 2.0 (preview)
- Setup/maintenance burden
- Small project vs big assistants