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Sponsored by
i10X
janhq / Jan-code-4b
Model's Last Updated: March 04 2026
text-generation
Introduction of Jan-code-4b
Model Details of Jan-code-4b
Jan-Code-4B: a small code-tuned model
Overview
Jan-Code-4B is a code-tuned model built on top of Jan-v3-4B-base-instruct . It’s designed to be a practical coding model you can run locally and iterate on quickly—useful for everyday code tasks and as a lightweight “worker” model in agentic workflows.
Compared to larger coding models, Jan-Code focuses on handling well-scoped subtasks reliably while keeping latency and compute requirements small.
Intended Use
- Lightweight coding assistant for generation, editing, refactoring, and debugging
- A small, fast worker model for agent setups (e.g., as a sub-agent that produces patches/tests while a larger model plans)
- Replace Haiku model in Claude Code setup
Quick Start
Integration with Jan Apps
Jan-code is optimized for direct integration with Jan Desktop , select the model in the app to start using it.
Local Deployment
Using vLLM:
vllm serve janhq/Jan-code-4b \
--host 0.0.0.0 \
--port 1234 \
--enable-auto-tool-choice \
--tool-call-parser hermes
Using llama.cpp:
llama-server --model Jan-code-4b-Q8_0.gguf \
--host 0.0.0.0 \
--port 1234 \
--jinja \
--no-context-shift
Recommended Parameters
For optimal performance in agentic and general tasks, we recommend the following inference parameters:
temperature: 0.7
top_p: 0.8
top_k: 20
🤝 Community & Support
- Discussions : Hugging Face Community
- Jan App : Learn more about the Jan App at jan.ai
📄 Citation
Updated Soon
Runs of janhq Jan-code-4b on huggingface.co
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More Information About Jan-code-4b huggingface.co Model
Url of Jan-code-4b
Jan-code-4b huggingface.co Url
Provider of Jan-code-4b huggingface.co
Other API from janhq
Updated:March 24 2026
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