Optimize Your AI Spending
Compare all models side by side to find the best cost-performance ratio for your use case.
Set your typical usage and we'll rank every major model by monthly cost.
What is a Token?
Tokens are the units AI models use to process text. One token is roughly 4 characters or ¾ of a word. A typical sentence is about 15–20 tokens. AI APIs charge separately for input tokens (your prompt) and output tokens (the model's response).
Most models charge per million tokens (1M tokens ≈ 750,000 words or about 1,500 pages of text).
How to Reduce Your AI API Costs
Use smaller models for simple tasks. GPT-4o mini and Claude 3 Haiku are 10–20x cheaper than their flagship versions with similar performance on straightforward tasks.
Optimize your prompts. Shorter, cleaner prompts reduce input tokens. Avoid repeating instructions on every call.
Cache responses. For repeated queries, cache the output instead of calling the API again.