# Nanbeige 4.1 (3B)

> Small on-device oriented model that stays close to Llama 3.2 while nudging the scaling choices.

| Property | Value |
| --- | --- |
| Lab | BOSS Zhipin (China) |
| Released | 2026-02-10 |
| Decoder type | Dense |
| Family | Dense |
| Scale | 3B parameters |
| Context window | 262,144 tokens |
| Attention | GQA |
| Layer mix | 32 GQA |
| KV cache / token (bf16) | 64 KiB (Low) |
| License | Apache License 2.0 |

**Key detail:** Llama-like stack without tying input embeddings to the output layer.

## Architecture concepts

- [Grouped-Query Attention (GQA)](https://llm-atlas-7or.pages.dev/concepts/gqa.md): Several query heads share one key/value head, shrinking the KV cache with little quality loss.

## Benchmark (Artificial Analysis Intelligence Index)

- AA Intelligence Index v4.3.2: total 8.4 (Scientific 5.4)

## Links

- Architecture diagram: https://sebastianraschka.com/llm-architecture-gallery/images/architectures/nanbeige-4-1-3b.webp
- View in article: https://magazine.sebastianraschka.com/p/a-dream-of-spring-for-open-weight#%C2%A77-nanbeige-41-3b-a-strong-llama-3-successor
- config.json: https://huggingface.co/Nanbeige/Nanbeige4.1-3B/blob/main/config.json
- Tech report: https://arxiv.org/pdf/2602.13367
- Source card (source of truth): https://sebastianraschka.com/llm-architecture-gallery/#card-nanbeige-4-1-3b
- Web page: https://llm-atlas-7or.pages.dev/models/nanbeige-4-1-3b/
- JSON: https://llm-atlas-7or.pages.dev/api/models/nanbeige-4-1-3b.json

_Data from Sebastian Raschka's LLM Architecture Gallery (https://sebastianraschka.com/llm-architecture-gallery/). Synced 2026-11-04._