Qwen: Qwen3.5-Flash

Qwen3.5-Flash, released on February 25, 2026, is a Qwen model designed for high inference efficiency through its hybrid architecture integrating linear attention and a sparse mixture-of-experts model. This model consistently ranks among the fastest available, demonstrating exceptional speed across eight benchmarks. It also offers highly competitive pricing, placing it among the most cost-effective options across four benchmarks. With an 88% success rate across eight benchmarks, Qwen3.5-Flash exhibits strong reliability, consistently providing usable responses. In terms of performance across categories, the model shows notable strengths in hallucination mitigation, achieving 97.1% accuracy, and email classification with 97.4% accuracy. Its instruction following capabilities are moderate at 63.6% accuracy. However, a significant weakness is apparent in core academic and reasoning tasks, where it scored 0.0% accuracy in Coding, General Knowledge, Reasoning, Ethics, and Mathematics benchmarks. This suggests that while Qwen3.5-Flash excels in efficiency and specific text-based tasks, its capabilities in complex problem-solving and knowledge-intensive domains are currently limited.