# MUD used as low-cost LLM evaluation tool in $99 proof of concept

A developer demonstrated that a classic text-based multiplayer game (MUD) can serve as an evaluation environment for large language models, costing only $99. This approach provides an alternative benchmark for assessing LLM performance in interactive, structured scenarios. It highlights the potential for using existing game systems as inexpensive testbeds for AI.

**Importance:** 2/5

## Sources

### Technology
- [Hacker News](https://cruciblebench.ai/) — Wed, 22 Jul 2026 15:39:01 +0000