Free tools to calculate, compare, and optimize your LLM spending. Know exactly what Claude, GPT-5, Gemini, Groq, and DeepSeek will cost you - before you build, and before the invoice arrives.
Enter your token usage and monthly call volume to get your exact cost per call and monthly spend. Compares 25+ models including GPT-5.5, Claude 4.8, Gemini 3.5, Groq, and DeepSeek side by side.
Calculate cost →Paste any system prompt, message, or model response and instantly see how many tokens it contains — and what it costs as input or output across every major model.
Count tokens →Compare 25+ AI models side by side on pricing, context window, and best use cases. Filter by provider, sort by cost, and find the right model for your workload fast.
Compare models →Per million tokens. Always verify at provider websites before final decisions.
Flat-fee subscriptions like Claude Pro or ChatGPT Plus are straightforward - you pay a fixed amount each month and use the product. API pricing is a completely different model. Every token in your prompt, every token in the response, and every token in your conversation history costs money on every single API call.
Consider a customer support chatbot with a 1,500-token system prompt running at 2,000 conversations per day. That creates 3 million input tokens daily from the system prompt alone, before the user types a single word. Add user messages and model responses and the real number climbs quickly.
AIPricingCalc exists to make these numbers visible before they become surprises. All tools are free, require no account, and run in your browser.
Start with the token counter. Paste your system prompt and see how many tokens it uses. Then use the cost calculator to estimate monthly spend based on your call volume. Finally, use the model comparison page to check whether a cheaper model can handle your use case.