AI API Pricing Calculator
Compare AI model API costs across providers. Estimate monthly spend based on your token usage for OpenAI, Anthropic, Google, and more.
Usage Estimates
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Frequently Asked Questions
How is AI API pricing calculated?▾
AI APIs charge per token (roughly 4 characters or 0.75 words). Costs depend on the model, whether tokens are input or output, and your volume. This calculator estimates monthly spend based on your usage pattern.
Which AI models does this calculator compare?▾
This tool compares major providers including OpenAI (GPT-4o, GPT-4, GPT-3.5), Anthropic (Claude Opus, Sonnet, Haiku), Google (Gemini Pro, Flash), and other popular models with current 2026 pricing.
What is the difference between input and output tokens?▾
Input tokens are what you send to the API (your prompt). Output tokens are what the model generates in response. Output tokens are typically 2-5x more expensive than input tokens.
How often is the pricing data updated?▾
Pricing data is embedded in the tool and updated periodically. AI providers change pricing frequently, so check the last updated date shown in the tool.