GPT-5.4
Nothing here. The model returned empty. We stared at it for a while.
GPT-5.4 vs GLM 5 Turbo
Compare GPT-5.4 by OpenAI against GLM 5 Turbo by Z-ai, context windows of 1.1M vs 203K, tested across 53 shared challenges. Updated April 2026.
Which is better, GPT-5.4 or GLM 5 Turbo?
GPT-5.4 and GLM 5 Turbo are both competitive models. GPT-5.4 costs $2.5/M input tokens vs $0.96/M for GLM 5 Turbo. Context windows: 1050K vs 203K tokens. Compare their real outputs side by side below.
Key Differences Between GPT-5.4 and GLM 5 Turbo
GPT-5.4 is made by openai while GLM 5 Turbo is from z-ai. GPT-5.4 has a 1050K token context window compared to GLM 5 Turbo's 203K. On pricing, GPT-5.4 costs $2.5/M input tokens vs $0.96/M for GLM 5 Turbo.
Our Verdict
GPT-5.4
GLM 5 TurboRunner-up
No community votes yet. On paper, GPT-5.4 has the edge — bigger model tier, bigger context window, major provider backing.
GLM 5 Turbo is 4.7x cheaper per token — worth considering if cost matters.
Slight edge
Writing DNA
Style Comparison
Similarity
98%
GLM 5 Turbo uses 9.1x more transitions
GPT-5.4
GLM 5 Turbo
54%Vocabulary54%
28wSentence Length18w
0.69Hedging0.24
4.1Bold4.0
8.1Lists3.0
0.00Emoji0.00
1.84Headings0.72
0.02Transitions0.17
Based on 22 + 23 text responses
vsAsk them anything yourself
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.
Free preview13 of 58 slides
FAQ