[r/LocalLLaMA] Testing & Benchmarking Qwen3.5 2k→400k Context Limit on my 4090

Summary

A user on r/LocalLLaMA is actively testing and benchmarking the Qwen3.5 model, specifically evaluating its extended context window capabilities from 2,000 up to an impressive 400,000 tokens. This performance assessment is being conducted on an NVIDIA RTX 4090, demonstrating the practical feasibility of running advanced, large-context AI models on high-end consumer hardware. The results are valuable for the local AI community, showcasing the potential for personal inference with very long context windows.

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