Claude Token Cost Calculator
Estimate Anthropic Claude API spend from input and output tokens. Presets cover Fable 5.1 ($10/$50, cache hit $0.25/1M), Haiku, Sonnet, and Opus list rates; custom $/1M fields override. Cost = tokens ÷ 1M × price. Estimates only; Claude pricing pages prevail.
Math runs in your browser. Nothing is uploaded.
Custom $/1M rates (optional)
Estimated USD cost
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Input cost
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Output cost
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Per 1k input tokens
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Per 1k output tokens
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Estimates only; official vendor pricing prevails (2026-10-30). Cost = tokens ÷ 1,000,000 × price per 1M.
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How it works
- How is Claude token cost calculated?
- Same formula as other API pages: tokens ÷ 1M × $/1M for input and output, then sum. Sonnet 5.5 at $2 / $10 with 100k in + 20k out ≈ $0.40.
- Which Claude models are presets?
- Fable 5.1 ($10 / $50 in/out; cache hit $0.25 / 1M when using prompt caching), Haiku 5.5 (≤100K prompt band), Sonnet 5.5, Opus 5.5, plus Haiku/Sonnet 4.5 and Opus 4.1 list bands. Override $/1M for other contracts.
- What is Claude Fable 5.1 pricing?
- Official list: $10 / $50 per 1M input/output. Prompt cache hits are $0.25 / 1M (0.025× input); 5-minute cache writes $12.50 and 1-hour writes $20 per 1M. Confirm on Anthropic’s pricing page.
- Does Haiku pricing change above 100K prompts?
- Yes. The preset uses the ≤100K band ($0.10 / $0.50). For longer prompts use the higher band in the custom fields.
- Is Claude Pro included here?
- No. This page is API token cost. Use the Claude Pro cost calculator for Pro/Max subscription totals.