Qwen3.8 125B (6B active) Flash-Next
4× AMD Radeon AI PRO R9700 32GB · vLLM · 262,144 ctx
- generation:
- 70.0 tokens/s
- quant:
- MXFP4-FP8-GPTQ (GPTQ)
- kv:
- fp8
Reported by the source; GPU count, offloading and concurrent requests can change these figures. Prompt-processing speed is shown only when the source reports it; generation speed cannot tell us time to first token. Check the full setup before comparing.
User reports Qwen3.8-Flash-Next at around 70 t/s for a single session on 4x Radeon AI PRO R9700 32GB. Setup is vLLM with MXFP4-FP8-GPTQ weights, fp8 KV cache, tensor-parallel-size 4, 262144 max model length, and MTP speculative decoding with 3 tokens. The user is troubleshooting a decode performance cap hit with newer vLLM image tags starting from 29.06.19, and notes the BetterBench report incorrectly labels the GPU as RTX 4000 Ada.