23:35
2026-06-30
artificialanalysis.ai
large-language-models
Claude Sonnet 5: strong agentic performance at a higher cost per task
Anthropic's Claude Sonnet 5 achieves a score of 53 on the Artificial Analysis Intelligence Index, matching GPT-5.5 with high reasoning but costing $2.29 per task—15% more than Opus 4.8—due to increase…