Qwen 3 Next 80B A3B Thinking Fast

Qwen 3 Next 80B A3B Thinking Fast is an inference-optimized build of Qwen3 Next 80B A3B Thinking, tuned for faster execution of reasoning-mode workloads without giving up visible step-by-step problem solving. It runs on the same sparse MoE architecture with roughly 3B active parameters, reducing latency on thinking-mode requests while keeping high-quality reasoning traces. This build suits production systems where both reasoning transparency and inference speed matter, such as real-time code review, interactive math tutoring, and agentic planning loops where reasoning latency can bottleneck throughput. The open-weight base supports local deployment and fine-tuning. Compared with the standard Thinking variant, Fast prioritizes throughput and lower latency while preserving reasoning capability. It keeps the 128K context window and the sparse MoE efficiency of the 80B base.