Free tools

Free AI tools for ChatGPT, Claude and Gemini

Count tokens, estimate costs, compare prices and write better prompts. All free, and most need no account.

Prompt optimizer

Paste a prompt and get a clearer, shorter version, its cost, and the best-fitting model at each AI company.

Count tokens for ChatGPT, Claude and Gemini, and see what any text costs on every current model. Runs in your browser.

Estimate your monthly AI bill on every major model, and how much shorter prompts and answers would save.

Every current model's price per million tokens, grouped by task level, with announced price changes.

Ready-to-use prompts for common jobs in about 30 industries, already optimized and ready to copy.

Want to understand the numbers? Start with how AI tokens work or the AI pricing comparison.