Z.AI: GLM 4.6 vs GPT-5.1-Codex
Compare Z.AI: GLM 4.6 by Zhipu AI against GPT-5.1-Codex by OpenAI, in 7 community votes, gpt-5.1-codex wins 80% of head-to-head duels, context windows of 203K vs 400K, tested across 53 shared challenges. Updated April 2026.
Which is better, Z.AI: GLM 4.6 or GPT-5.1-Codex?
GPT-5.1-Codex is the better choice overall, winning 80% of 7 blind community votes on Rival. Z.AI: GLM 4.6 costs $0.4/M input tokens vs $1.25/M for GPT-5.1-Codex. Context windows: 203K vs 400K tokens. Compare their real outputs side by side below.
Key Differences Between Z.AI: GLM 4.6 and GPT-5.1-Codex
Z.AI: GLM 4.6 is made by zhipu while GPT-5.1-Codex is from openai. Z.AI: GLM 4.6 has a 203K token context window compared to GPT-5.1-Codex's 400K. On pricing, Z.AI: GLM 4.6 costs $0.4/M input tokens vs $1.25/M for GPT-5.1-Codex. In community voting, In 7 community votes, GPT-5.1-Codex wins 80% of head-to-head duels.
In 7 community votes, GPT-5.1-Codex wins 80% of head-to-head duels. GPT-5.1-Codex leads in Reasoning, Web Design. Based on blind community voting from the Rival open dataset of 7+ human preference judgments for this pair.
Pick GPT-5.1-Codex. In 7 blind votes, GPT-5.1-Codex wins 80% of the time. That's not luck.
GPT-5.1-Codex particularly excels in Web Design, Reasoning. Z.AI: GLM 4.6 is 5.7x cheaper per token — worth considering if cost matters.
Style Comparison
Z.AI: GLM 4.6 uses 17.9x more emoji
vsAsk them anything yourself
Some models write identically. You are paying for the brand.
178 models fingerprinted across 32 writing dimensions. Free research.
185x
price gap between models that write identically
178
models
12
clone pairs
32
dimensions
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.
