Jan Nano is an open-source language model by unsloth. Features: 4b LLM, VRAM: 8.1GB, Context: 40K, License: apache-2.0, LLM Explorer Score: 0.2.
Base model:finetune:menlo/jan-... Base model:menlo/jan-nano Conversational Qwen3 Region:us Safetensors Sharded Tensorflow Unsloth
Model Card on HF 🤗: https://huggingface.co/unsloth/Jan-nano
Jan Nano Benchmarks
nn.n% — How the model compares to the reference models: Anthropic Sonnet 3.5 ("so35"), GPT-4o ("gpt4o") or GPT-4 ("gpt4").
What is the LLM Explorer Rank (Score)
Jan Nano Parameters and Internals
| LLM Name | Jan Nano |
| Repository 🤗 | https://huggingface.co/unsloth/Jan-nano |
| Base Model(s) | |
| Model Size | 4b |
| Required VRAM | 8.1 GB |
| Updated | 2026-04-17 |
| Maintainer | unsloth |
| Model Type | qwen3 |
| Model Files | |
| Model Architecture | Qwen3ForCausalLM |
| License | apache-2.0 |
| Context Length | 40960 |
| Model Max Length | 40960 |
| Transformers Version | 4.52.4 |
| Tokenizer Class | Qwen2Tokenizer |
| Padding Token | <|vision_pad|> |
| Vocabulary Size | 151936 |
| Torch Data Type | bfloat16 |
| Errors | replace |
Best Alternatives to Jan Nano
Best Alternatives |
Context / RAM |
Downloads |
Likes |
|---|---|---|---|
| ...qwYsvubwpG3tFk21KpbEyXK6ZngAn5 | 40K / 65.3 GB | 39 | 0 |
Note: green Score (e.g. "73.2") means that the model is better than unsloth/Jan-nano .
Rank the Jan Nano Capabilities
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Original data from HuggingFace, OpenCompass and various public git repos.
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Release v20260328a