By Fable5 team
Claude API usage can become hard to estimate when prompts, long context, cache reads/writes, and batch pricing are involved. Fable5 was built to make those cost checks faster before sending requests.
Built as a focused Claude API utility and pricing reference.
A small developer tool for estimating Claude token usage, API costs, cache read/write costs, and model pricing/spec tradeoffs.
Help Claude API users make clearer cost decisions before production usage.