Corrections
When a published article turns out to be wrong, or a fact in it has changed, the article is updated and the change is recorded here. Articles are never quietly edited.
Found an error? Write to ops@3ammarketer.com with the article and what is wrong. Substantive errors are corrected and logged here.
Log
Claude Tokens: API Pricing, Caching, and Costs
Corrected the cached input price for Claude Opus 5.5 from $0.40 to $0.20 per million tokens, and noted that the 10 percent cache read rate applies to most models, not all.
Anthropic prices cache hits on Claude Opus 5.5 at 0.05x the base input price, not the standard 0.1x, and Claude Fable 5.1 at 0.025x.
Corrected the cached input price for Claude Opus 5.5 from $0.40 to $0.20 per million tokens, and noted that the 10 percent cache read rate applies to most models, not all.
Anthropic prices cache hits on Claude Opus 5.5 at 0.05x the base input price, not the standard 0.1x, and Claude Fable 5.1 at 0.025x.