AI Token Price Calculator 🧮
Compare costs for GPT-5, Claude, Gemini and 5010+ AI models
Calculate input & output token costs instantly. Free, no signup required.
Popular models:
| Model | Tokens | Input Cost | Output Cost |
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* Token counts are estimated. Actual tokenization varies by model.
Frequently Asked Questions
What is a token in AI?
A token is the basic unit AI models use to process text. Roughly 1 token equals 4 characters or about 3/4 of a word. For example, "Hello world" is 2 tokens. Both your input (prompt) and output (response) are measured in tokens.
How much does GPT-5 cost per message?
A typical message (500 words input + 500 words output) ranges from well under a cent on GPT-5 nano to about $0.14 on GPT-5.5 Pro. Mainstream variants like GPT-5.2 land around $0.01. Use our calculator above to get exact costs for your specific use case.
Which AI model is the cheapest?
The cheapest models vary by provider. GPT-5 nano, Gemini Flash Lite, and DeepSeek offer excellent value. Check our pricing table to sort by cost and find the best option for your budget.
Why are output tokens more expensive than input?
Generating output requires more computation than processing input. The model must predict each token sequentially, which is computationally intensive. Input tokens are processed in parallel, making them cheaper.