Tools
Free AI API tools
Free calculators for estimating tokens and API costs before you build.
LLM API cost calculator
Estimate monthly LLM API cost for any model from tokens per request and request volume, at list price and through Somnus.
Token calculator & prompt token counter
Paste a prompt to estimate its token count and what it costs to send to Claude, GPT, Gemini and other models.
AI model price comparison tool
Pick any two AI models and compare list input/output prices and the cost of a sample workload side by side.