AI API Cost Estimator
Calculate the cost of AI API calls based on provider, model, and token usage.
Plan how many API requests you can make within a given monthly budget.
Formula
Monthly Cost = (Total Input Tokens / 1,000,000) x Input Rate + (Total Output Tokens / 1,000,000) x Output Rate. Total Tokens = Tokens per Request x Requests per Day x Days per Month.
Frequently Asked Questions
How are AI API costs calculated?
AI API costs are calculated based on the number of tokens processed. Each provider charges separately for input tokens (your prompt) and output tokens (the AI response). Prices vary significantly between models, with more capable models costing more per token.
What is the cheapest AI API provider?
Pricing varies by model tier. For budget use cases, OpenAI GPT-4o Mini and Google Gemini Flash offer the lowest per-token rates. For high-capability models, pricing is competitive across OpenAI, Anthropic, and Google, each offering different strengths.
How can I reduce AI API costs?
You can reduce costs by using smaller models for simpler tasks, caching frequent responses, optimizing prompt length, batching requests, and implementing token limits on outputs. Many providers also offer volume discounts.
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