AI API Cost Calculator
Compare pricing across GPT-4o, Claude, DeepSeek, Gemini, and more. Enter input/output token counts to estimate cost per call and monthly spend. Simulate cache hit savings for DeepSeek and GPT models. All pricing from official API pages.
Frequently Asked Questions
What is an AI API cost calculator?
It estimates the cost of AI API usage based on input tokens, output tokens, and model pricing.
Which models are included?
Popular model families such as GPT, Claude, and DeepSeek are included, with adjustable token prices.
How accurate is the estimate?
It is an estimate based on the prices you set. Actual bills depend on provider pricing, caching, and usage patterns.
Do I need an API key?
No. This calculator is free and does not call any AI API.
Why estimate AI API costs?
AI pricing is charged per token, and small changes in input length, output length, or request volume create big monthly differences. This calculator compares OpenAI, Anthropic, DeepSeek, Google Gemini, and xAI models side by side using published list prices.
When to use it
- Choosing a model for a prototype or production app
- Estimating a monthly budget before signing up for an API
- Checking whether cached input or prompt compression is worth the effort
What the numbers mean
Enter your average input and output tokens per call, plus how many calls you expect per day. The table shows estimated cost per call and per 30-day month. Prices change frequently, so treat the results as planning estimates and verify current pricing before launch.