Claude Code
Use Jan as a local AI backend for Claude Code. Run inference entirely on your own hardware — your code never leaves your machine.
Jan replaces Claude's cloud models with local ones. You can assign a Jan model to each tier:
- Large Model (Opus) — for complex reasoning tasks
- Medium Model (Sonnet) — for balanced performance
- Small Model (Haiku) — for fast, lightweight tasks
Setup
Open Settings
Go to Settings → Integrations → Claude Code.
Assign models
Select a Jan model for each tier — Large, Medium, and Small. Click the model dropdown next to each tier to pick from your installed models. Use Jan-Code for a quick start by clicking Setup next to the suggestion.
Save & Enable
Click Save & Enable. Jan will now serve as the local backend for Claude Code.
Environment Variables
You can add custom environment variables via the + Environment Variables button if your setup requires additional configuration.