# Free tools

Free tools for AI and large language model benchmarks. You need no account.

- [Which benchmark should I use?](https://aibenchmarkindex.com/tools/which-benchmark-should-i-use.md): Rank benchmarks for your task by category, saturation, and data licence.
- [Eval run cost estimator](https://aibenchmarkindex.com/tools/eval-run-cost-estimator.md): Estimate model API cost from task count, tokens, and per-million-token prices.

> **Check before you compare.** Benchmark methods and leaderboards change. Follow the cited primary source before using a result in a decision.