Claude API Cost Calculator
Estimate Anthropic Claude API costs for writing, reasoning, customer support, knowledge work, and agent workflows.
Use the AI API Cost CalculatorWhat This Calculator Helps Estimate
- Input token cost for prompts, documents, and knowledge context.
- Output token cost for generated responses and summaries.
- Cached input token cost for repeated Claude context.
- API calls, monthly usage, and yearly spend planning.
Supported Models
- Claude Opus 4.7
- Claude Sonnet 4.6
- Claude Haiku 4.5
How Cost Is Calculated
Total cost = Input cost + Cached input cost + Output cost
Claude workloads often include long prompts, documents, or retrieved knowledge. Estimating both input and output volume helps avoid surprises when usage grows.
Pricing Note
Claude prices shown in the main calculator are reference values based on official first-party API pricing. Always confirm the latest Anthropic pricing before committing to production budgets.
Common Use Cases
- Knowledge base assistants
- Document analysis
- Customer support automation
- AI writing workflows
- Research and reasoning tasks
FAQ
How are Claude API costs estimated?
Claude API costs are estimated from input tokens, cached input tokens, output tokens, and the number of API calls in the billing period.
Which Claude model is best for lower cost?
Lower-cost Claude models can be useful for faster or simpler workloads, while larger models may be better suited for complex reasoning and analysis.
Why should I estimate monthly Claude API spend?
Claude applications can process long context and documents, so monthly estimates help teams plan usage before traffic increases.
Does this calculator include cached input pricing?
Yes. The main calculator has a cached input token field so you can estimate the effect of cached context separately from regular input tokens.