Qwen: Qwen3.5 Plus 2026-02-15

Qwen3.5 Plus 2026-02-15, from provider qwen, demonstrates exceptional speed, consistently ranking among the fastest models available. It also offers highly competitive pricing across various benchmarks. With an 88% success rate, the model exhibits strong reliability, indicating few technical issues. In terms of specific performance, Qwen3.5 Plus excels in acknowledging uncertainty, achieving perfect accuracy in the Hallucinations (Baseline) test by correctly identifying fictional concepts. It also shows solid performance in Email Classification with 97.6% accuracy. However, the model exhibits significant weaknesses in several core areas, including General Knowledge, Coding, Reasoning, Ethics, and Mathematics, where it scored 0.0% accuracy. Its Instruction Following capability is moderate at 66.3%. This suggests a model highly specialized in certain tasks, particularly those requiring precise information filtering or classification, but lacking broad foundational knowledge and complex reasoning skills. Its hybrid architecture and integration of linear attention mechanisms with sparse mixture-of-experts models appear to contribute to its efficiency, but further development is needed to enhance its cognitive capabilities across a wider range of challenging benchmarks.