Jan-nano is a model fine-tuned with DAPO on Qwen3-4B. Jan-nano comes with some unique capabilities:
- It can perform deep research (with the right prompting)
- It picks up relevant information effectively from search results
- It uses tools efficiently
The model was evaluated using SimpleQA - a relatively straightforward benchmark to test whether the model can find and extract the right answers.
Jan-nano outperforms Deepseek-671B on this metric, using an agentic and tool-usage-based approach. A 4B model obviously has its limitations, but it's interesting to see how far these things can be pushed. Jan-nano can serve as your self-hosted Perplexity alternative on a budget.
You can find the model at: https://huggingface.co/Menlo/Jan-nano
And a gguf is available at: https://huggingface.co/Menlo/Jan-nano-gguf