Questions this tool answers

Can this pricing tracker replace the official Claude pricing page?

No. It is an archive and estimator. Current budget decisions should verify rates against the linked official pricing docs.

Does the estimate include prompt caching, data residency, tool-use, or fast-mode modifiers?

It can optionally apply the base 50% Batch API discount, but it does not include prompt caching, data residency, tool-use, or fast-mode modifiers.

Why is Sonnet 5 listed twice?

The pricing docs list an introductory rate through August 31, 2026 and a scheduled standard rate beginning September 1, 2026.