Z.AI: GLM 4.5 Air vs GPT OSS 20B

Compare Z.AI: GLM 4.5 Air by Zhipu AI against GPT OSS 20B by OpenAI, in 1 community votes, z.ai: glm 4.5 air wins 100% of head-to-head duels, context windows of 128K vs 131K, tested across 26 shared challenges. Updated February 2026.

In 1 community votes, Z.AI: GLM 4.5 Air wins 100% of head-to-head duels. Based on blind community voting from the RIVAL open dataset of 1+ human preference judgments for this pair.