When Anthropic released Claude Opus 5.5 this week , the company claimed the new model costs 40% less than Opus 5 and generates output 30% faster. Anthropic’s marketing makes three claims. Opus 5.5 performs at the level of Claude Fable 5.1 (so it should outperform Opus 5), costs 40% less than Opus 5 on typical workloads, and generates output more than 30% faster. Anthropic also cut the price developers pay to use the model through its API. Opus 5.5 costs $4 for every million tokens (chunks of text roughly three-quarters of a word long) sent to the model and $20 for every million it writes...

Source: The New Stack