Z.AI: GLM 4.5 vs Grok Code Fast 1
Compare Z.AI: GLM 4.5 by Zhipu AI against Grok Code Fast 1 by xAI, in 2 community votes, z.ai: glm 4.5 wins 100% of head-to-head duels, context windows of 128K vs 256K, tested across 55 shared challenges. Updated April 2026.
Which is better, Z.AI: GLM 4.5 or Grok Code Fast 1?
Z.AI: GLM 4.5 is the better choice overall, winning 100% of 2 blind community votes on Rival. Z.AI: GLM 4.5 costs $0.6/M input tokens vs $0.2/M for Grok Code Fast 1. Context windows: 128K vs 256K tokens. Compare their real outputs side by side below.
Key Differences Between Z.AI: GLM 4.5 and Grok Code Fast 1
Z.AI: GLM 4.5 is made by zhipu while Grok Code Fast 1 is from xai. Z.AI: GLM 4.5 has a 128K token context window compared to Grok Code Fast 1's 256K. On pricing, Z.AI: GLM 4.5 costs $0.6/M input tokens vs $0.2/M for Grok Code Fast 1. In community voting, In 2 community votes, Z.AI: GLM 4.5 wins 100% of head-to-head duels.
In 2 community votes, Z.AI: GLM 4.5 wins 100% of head-to-head duels. Based on blind community voting from the Rival open dataset of 2+ human preference judgments for this pair.
Pick Z.AI: GLM 4.5. In 2 blind votes, Z.AI: GLM 4.5 wins 100% of the time. That's not luck.
Style Comparison
Z.AI: GLM 4.5 uses 2.2x more emoji
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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
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12
clone pairs
32
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279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.
