# Qwen3.8-Flash-Next

> OnPrem World · https://onpremworld.com/en/models/qwen3.8-flash-next · Last updated: 2026-10-14 · CC BY 4.0

An experimental preview of Qwen's next architecture: a 125B MoE (6B active) plus a 51B n-gram embedding, 180B stored in all, so plan on a 192 GB-class machine and a recent runtime. Unlike the other Qwen models here, it uses the Qwen Community License rather than Apache-2.0.

|  |  |
|---|---|
| Developer | Alibaba Qwen |
| Parameters | 180B (6B active, MoE) |
| Native context | 262,144 tokens |
| Licence | Qwen Community License 1.0 (qwen-community-1.0) |
| Commercial use | Yes |
| KV cache | 12 of 48 layers (the rest are linear attention with a fixed-size state) |
| Released | 2026-08 |

```
ollama run qwen3.8-flash-next:125b-a6b-q4_K_M
```

## Memory needed

Weights + KV cache + runtime overhead, in GiB. Lower quantization = less memory, slightly lower quality.

| Quantization | 4K | 8K | 32K |
|---|---|---|---|
| Q4_K_M | 107.3 GiB | 107.4 GiB | 108.0 GiB |
| Q5_K_M | 125.8 GiB | 125.9 GiB | 126.4 GiB |
| Q6_K | 145.6 GiB | 145.7 GiB | 146.2 GiB |
| Q8_0 | 187.6 GiB | 187.7 GiB | 188.3 GiB |
| FP16 | 352.6 GiB | 352.7 GiB | 353.3 GiB |

## Which hardware runs it (8K)

| Hardware | Memory | Best quant | tok/s (est.) |
|---|---|---|---|
| M5 Ultra | 512 GB | FP16 | 65 |
| M3 Ultra | 512 GB | FP16 | 44 |
| Ryzen AI Max+ PRO 495 (Gorgon Halo) systems | 192 GB | Q5_K_M | 38 |
| GeForce RTX 3060 (12 GB) | 12 GB | Doesn't fit | – |
| GeForce RTX 3090 | 24 GB | Doesn't fit | – |
| GeForce RTX 4060 Ti 16GB | 16 GB | Doesn't fit | – |
| GeForce RTX 4080 SUPER | 16 GB | Doesn't fit | – |
| GeForce RTX 4090 | 24 GB | Doesn't fit | – |
| GeForce RTX 5060 Ti 16GB | 16 GB | Doesn't fit | – |
| GeForce RTX 5070 | 12 GB | Doesn't fit | – |
| GeForce RTX 5070 Ti | 16 GB | Doesn't fit | – |
| GeForce RTX 5080 | 16 GB | Doesn't fit | – |
| GeForce RTX 5090 | 32 GB | Doesn't fit | – |
| Radeon RX 7900 XT | 20 GB | Doesn't fit | – |
| Radeon RX 7900 XTX | 24 GB | Doesn't fit | – |
| Radeon RX 9060 XT 16GB | 16 GB | Doesn't fit | – |
| Radeon RX 9070 XT | 16 GB | Doesn't fit | – |
| Arc B580 | 12 GB | Doesn't fit | – |
| RTX A6000 | 48 GB | Doesn't fit | – |
| RTX 6000 Ada Generation | 48 GB | Doesn't fit | – |
| RTX PRO 5000 72GB Blackwell | 72 GB | Doesn't fit | – |
| RTX PRO 6000 Blackwell Workstation Edition | 96 GB | Doesn't fit | – |
| Radeon AI PRO R9700 | 32 GB | Doesn't fit | – |
| Arc Pro B60 | 24 GB | Doesn't fit | – |
| Arc Pro B70 | 32 GB | Doesn't fit | – |
| M4 Pro | 64 GB | Doesn't fit | – |
| M4 Max (14-core CPU / 32-core GPU) | 36 GB | Doesn't fit | – |
| M4 Max (16-core CPU / 40-core GPU) | 128 GB | Doesn't fit | – |
| M5 | 32 GB | Doesn't fit | – |
| M5 Pro | 64 GB | Doesn't fit | – |
| M5 Max (18-core CPU / 32-core GPU) | 36 GB | Doesn't fit | – |
| M5 Max (18-core CPU / 40-core GPU) | 128 GB | Doesn't fit | – |
| M6 (16GB configuration, 153 GB/s) | 16 GB | Doesn't fit | – |
| M6 (24GB/32GB configurations, 170 GB/s) | 32 GB | Doesn't fit | – |
| DGX Spark | 128 GB | Doesn't fit | – |
| RTX Spark (N1X) laptops & compact desktops | 128 GB | Doesn't fit | – |
| Ryzen AI Max+ 395 (Strix Halo) systems | 128 GB | Doesn't fit | – |

## Frequently asked questions

### How much VRAM does Qwen3.8-Flash-Next need?

With an 8K context, about 107.4 GiB at Q4_K_M and 187.7 GiB at Q8_0 (weights + KV cache + runtime overhead). Longer contexts need more memory for the KV cache.

### Can Qwen3.8-Flash-Next run on an GeForce RTX 4090?

Qwen3.8-Flash-Next does not fit on the GeForce RTX 4090 (24 GB), even at Q4_K_M with an 8K context.

### Can I run Qwen3.8-Flash-Next on a Mac?

Yes. Qwen3.8-Flash-Next fits on the M3 Ultra (256 GB) at Q8_0 with an 8K context, using about 187.7 GiB, at an estimated 84 tokens/s.

### Can Qwen3.8-Flash-Next be used commercially?

Qwen3.8-Flash-Next is released under Qwen Community License 1.0 (qwen-community-1.0). The licence allows commercial use (read its conditions).

## Sources

- https://github.com/QwenLM/Qwen3.8-Flash-Next/blob/main/README.md
- https://huggingface.co/Qwen/Qwen3.8-Flash-Next/blob/main/LICENSE
- https://huggingface.co/Qwen/Qwen3.8-Flash-Next
- https://huggingface.co/Qwen/Qwen3.8-Flash-Next/resolve/main/config.json
- https://huggingface.co/api/models/Qwen/Qwen3.8-Flash-Next?expand[]=safetensors
- https://ollama.com/library/qwen3.8-flash-next/tags