AI Token Counter
Count tokens for GPT, Claude, and Gemini prompts — exact for GPT, clearly-labeled estimates for Claude and Gemini. Runs entirely in your browser.
Open toolTools
Free utilities — no sign-up required. The token counter and pricing calculator run entirely in your browser; the MCP Compatibility Checker performs a live server-side audit. See each tool's page for specifics.
LLM Pricing Calculator
Compare real dollar costs across GPT-5.6, Claude Opus 4.7/4.8, and Gemini 3.6 Flash, including each provider's prompt-caching math. Runs entirely in your browser.
Open toolMCP Compatibility Checker
A free, 7-point live audit of your remote MCP server against the July 2026 spec rewrite, with upgrade guidance for anything that's out of date.
Open tool