Claude Sonnet 5.5 Is 30% Faster and Cheaper, So Why Does It Cost More Than Opus?

Anthropic says it’s cheaper per task. So why does it cost more than Opus 5.5 to run?

Claude Sonnet 5.5. Image by Jim Clyde Monge

It’s only been a couple of days since the amazing Claude Opus 5.5 was released. People have used it to build really cool projects because of how efficient the model is with tokens and how good it is at following instructions. In my review, I claimed that Claude is officially back.

Today, Anthropic released Claud…