Jan Nano 128K is an open-source language model by unsloth. Features: 4b LLM, VRAM: 8.1GB, Context: 128K, License: apache-2.0, LLM Explorer Score: 0.19.
| LLM Name | Jan Nano 128K |
| Repository 🤗 | https://huggingface.co/unsloth/Jan-nano-128k |
| Base Model(s) | |
| Model Size | 4b |
| Required VRAM | 8.1 GB |
| Updated | 2026-08-06 |
| Maintainer | unsloth |
| Model Type | qwen3 |
| Model Files | |
| Supported Languages | en |
| Model Architecture | Qwen3ForCausalLM |
| License | apache-2.0 |
| Context Length | 131072 |
| Model Max Length | 131072 |
| Transformers Version | 4.52.4 |
| Tokenizer Class | Qwen2Tokenizer |
| Padding Token | <|vision_pad|> |
| Vocabulary Size | 151936 |
| Torch Data Type | bfloat16 |
| Errors | replace |
Best Alternatives |
Context / RAM |
Downloads |
Likes |
|---|---|---|---|
| FastContext 1.0 4B SFT | 256K / 8.1 GB | 5735 | 357 |
| GRPO 4 70 | 256K / 8.1 GB | 11 | 0 |
| Qwen3 4B Instruct 2507 | 256K / 8.1 GB | 3109972 | 911 |
| Fable Traces | 256K / 8.1 GB | 343 | 210 |
| Lightning 4B | 256K / 8.1 GB | 13 | 6 |
| Qwen3 4B Sft Prm | 256K / 17.6 GB | 602 | 0 |
| FastContext 1.0 4B RL | 256K / 8.1 GB | 4559 | 61 |
| Qwen3 4B Thinking 2507 | 256K / 8.1 GB | 291023 | 606 |
| ...fetensors.chatgpt GPT Codex V2 | 256K / 8.1 GB | 666 | 2 |
| ...rs.chatgpt GPT Gpt5.1 Thinking | 256K / 8.1 GB | 454 | 4 |