Claude Sonnet 5 hides cost jump behind token prices

Claude Sonnet 5 scores 53 points in Artificial Analysis tests, tying GPT-5.5 (high) for fifth place. Despite unchanged token prices, an average task costs $2.29 with Sonnet 5 versus $1.97 with Opus 4.8. The model uses 40 percent more output tokens per task than Sonnet 4.6.