Free Tools

AI API Cost Calculators

Estimate your AI API costs before you commit. Free pricing calculators for every major provider.

OpenAI API Pricing Calculator

Calculate costs for GPT-5, GPT-4o, GPT-4o-mini, O3, and O4-mini. Estimate daily and monthly spend based on your usage.

Calculate costs for Claude Opus 4, Sonnet 4, and Haiku 3.5. See per-request, daily, and monthly pricing breakdowns.

Calculate costs for Gemini 2.5 Pro, 2.5 Flash, and 2.0 Flash. Compare input and output token pricing.

Compare pricing across OpenAI, Anthropic, and Google side by side. Find the cheapest model for your use case.