janhq/Jan-code-4b
Jan-code-4b by janhq is a 4 billion parameter code-tuned language model built on Jan-v3-4B-base-instruct. It is specifically designed for local execution and quick iteration on everyday coding tasks. This model excels at handling well-scoped coding subtasks reliably, making it suitable as a lightweight coding assistant for generation, editing, refactoring, and debugging, or as a fast worker model in agentic workflows.
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Jan-Code-4B: A Small, Code-Tuned Model
Jan-Code-4B, developed by janhq, is a 4 billion parameter model specifically tuned for coding tasks. Built upon the Jan-v3-4B-base-instruct architecture, it prioritizes local execution and rapid iteration, making it a practical choice for developers.
Key Capabilities
- Efficient Code Handling: Designed to reliably manage well-scoped coding subtasks.
- Low Latency & Compute: Optimized for minimal latency and reduced computational requirements, ideal for local deployment.
- Agentic Workflow Integration: Functions effectively as a lightweight "worker" model within larger agent setups.
Good For
- Lightweight Coding Assistant: Excellent for code generation, editing, refactoring, and debugging.
- Sub-agent in Agentic Systems: Can be used to produce patches or tests, complementing a larger planning model.
- Replacing Haiku in Claude Code Setups: Offers a viable alternative for specific configurations.
Jan-Code-4B is optimized for direct integration with the Jan Desktop App and supports local deployment via vLLM and llama.cpp.