A benchmark for LLMs playing Civilization V. GLM-5.3 is ahead of Opus-5.5, and Qwen-3.8-27B holds up surprisingly well.

CivBench evaluates large language model performance in complex, long-horizon decision-making within Civilization V. Recent benchmarks show GLM-5.3 outperforming Opus-5.5, while Qwen-3.8-27B maintains competitive strategic execution. The testing framework tracks model capabilities across hundreds of turns in a turn-based strategy environment.