Local calculator · Evals
Eval sample-size planner
Estimate how many examples you need for a useful evaluation sample.
Enter your values and press Calculate.
How to read it
A number is not a decision.
Use the result to compare scenarios. Change one variable at a time, keep the assumption, and document the source of any external price or limit you enter.
① Deterministic formula② Data under your control③ No API④ Reproducible result