Claude API Cost: Estimate Your Anthropic Bill
Claude's Opus, Sonnet and Haiku tiers span a wide price range, and its strong prompt caching can meaningfully change the math on context-heavy work. Here is how to estimate your Claude bill.
Choose the tier that fits
Haiku is inexpensive for high-volume routine work, Sonnet balances cost and capability, and Opus targets the hardest tasks. Matching the tier to the job is the biggest single control on your Claude spend.
Lean on prompt caching
Claude's caching is well suited to long, stable system prompts and knowledge blocks reused across calls. When your context repeats, caching bills it at a fraction of the input rate and can transform the economics.
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Frequently asked questions
How much does the Claude API cost?+
It depends on the tier — Haiku, Sonnet or Opus — and your token volume; estimate it on your workload with the Claude cost calculator.
Does Claude prompt caching save money?+
Yes, when a large context repeats across calls — the repeated portion bills at the cached rate.