Anthropic: Claude Haiku 5.5 (batch)

Anthropic's Claude Haiku 5.5, released on October 7, 2026, is positioned as a small, fast model optimized for high-volume, cost-sensitive tasks. It performs among the fastest models, ranking in the 76th percentile for speed across benchmarks. The model also offers competitive pricing, placing in the 63rd percentile for cost-effectiveness. Notably, Claude Haiku 5.5 demonstrates exceptional reliability, achieving a perfect 100% success rate across all benchmarks, indicating consistent and usable responses. In terms of specific capabilities, the model exhibits a significant strength in Coding, achieving an outstanding 98.0% accuracy (99th percentile), making it a top performer in this domain. Its Reasoning and Mathematics capabilities are also strong, with 96.0% and 94.0% accuracy respectively, placing it in the upper quartiles. While its Instruction Following accuracy of 71.0% is solid, it represents a relative area for potential improvement compared to its other high-performing categories. Overall, Claude Haiku 5.5 excels in technical domains like coding and complex problem-solving, making it well-suited for its intended applications.