Claude Opus 5 vs Claude Opus 5.5: scores, price and which to pick

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Our take

Claude Opus 5.5 wins 4 of 4 categories and costs less: 1.3× cheaper for everyday text work. Easy pick.

Overall8697Best

Coding84100Best

Writing86100Best

Support8490Best

Value7183Best

Input / 1M$5.00$4.00Best

Output / 1M$25.00$20.00Best

Blended / 1M$10.00$8.00Best

Context window1M1M

Open weightsNoNo

Released24 Jul 202622 Sept 2026

Your monthly bill

Tasks per month50k

Claude Opus 5$2.0k

Claude Opus 5.5$1.6kCheapest

List prices, a quarter of the tokens as output. Scores are provisional, from Arena and Epoch AI.