Anthropic launches Claude Opus 5.5 with lower prices and a top-three benchmark score
Artificial Analysis ranks the high-effort fallback system third at 54, while Anthropic cut per-token prices 20% from Opus 5.
By Ryan Merket · Published
Primary source: X - @synthwavedd
Why it matters
Opus 5.5 pushes the frontier-model contest toward cost per completed job, where token use and agent steps matter alongside benchmark scores. Its fallback-assisted result also shows why developers must inspect configurations before treating one leaderboard number as a clean model comparison.
Anthropic launched Claude Opus 5.5 on September 22nd, pairing its newest frontier model with lower token prices, faster output and an independently measured Artificial Analysis Intelligence Index score of 54.
…
When you purchase through links in our articles, we may earn a small commission. This doesn’t affect our editorial independence.