Qwen3.8 125B (6B active) Flash-Next
on AMD RX 7900 XTX · Strata · 500,000 ctx
Summary
User reports Qwen3.8-Flash-Next running locally on an AMD RX 7900 XTX at 500,000 context, with decode of 105–160 tok/s.
Setup is Strata with a Q2 quant; 66.4 GB of weights, 23.8 GiB resident in VRAM, 31.6 GB of expert weights and a 28.8 GB PLE table in system RAM.
Context held 506,849 tokens. Quality held between 81% and 84% with thinking off and 88–94% with it on across 4k, 64k and 256k. Decode fell 18% over that range. User calls it an incredible improvement over llama.cpp and Swift 1.5 27b dense, and now uses it as a daily driver.