Qwen3.5 benchmarks hit 400k on 4090

Community benchmarks like this are more useful than flashy context-window claims because they show what actually works on prosumer hardware.

• –Qwen3.5 0.8B, 2B, 4B, and 9B variants completed 400K-context runs on a single 4090, though cold-start latency became very high at the top end
• –The standout practical result is the quantized 9B model, which still delivered roughly 50 tokens/sec at 400K context in the published table
• –Bigger 27B and 35B variants looked strong up to around 196K context, then started failing or getting skipped beyond 262K because of OOM or server-busy issues
• –The repo’s warm-cache numbers matter: once KV cache is loaded, repeat interactions look much more usable than the scary first-token times suggest