Opus 5 posts 79.2 on SWE-bench Pro against Opus 4.8 at 69.2. What the launch ratios mean, and the benchmark row I refused to score.

Anthropic's new everyday model Claude Opus 5 undercuts its own frontier product on cost and beats it almost everywhere that counts.

Anthropic launches Claude Opus 5 with stronger coding and knowledge work performance, near Fable 5 capabilities and the same pricing as Opus 4.8.