GLM 4.7 Flash vs GPT-4o (Omni)

Compare GLM 4.7 Flash by Zhipu AI against GPT-4o (Omni) by OpenAI, context windows of 200K vs 128K, tested across 52 shared challenges. Updated April 2026.

Which is better, GLM 4.7 Flash or GPT-4o (Omni)?

GLM 4.7 Flash and GPT-4o (Omni) are both competitive models. GLM 4.7 Flash costs $0.07/M input tokens vs $2.5/M for GPT-4o (Omni). Context windows: 200K vs 128K tokens. Compare their real outputs side by side below.

Key Differences Between GLM 4.7 Flash and GPT-4o (Omni)

GLM 4.7 Flash is made by zhipu while GPT-4o (Omni) is from openai. GLM 4.7 Flash has a 200K token context window compared to GPT-4o (Omni)'s 128K. On pricing, GLM 4.7 Flash costs $0.07/M input tokens vs $2.5/M for GPT-4o (Omni).

Our Verdict
GLM 4.7 Flash
GLM 4.7 Flash
GPT-4o (Omni)
GPT-4o (Omni)

No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.

GLM 4.7 Flash is 25x cheaper per token — worth considering if cost matters.

Too close to call
Writing DNA

Style Comparison

Similarity
79%

GPT-4o (Omni) uses 2.5x more emoji

GLM 4.7 Flash
GPT-4o (Omni)
52%Vocabulary54%
15wSentence Length18w
0.33Hedging0.72
5.8Bold7.3
4.7Lists5.6
0.00Emoji0.03
0.68Headings1.40
0.13Transitions0.26
Based on 19 + 24 text responses
vs

Ask them anything yourself

GLM 4.7 FlashGPT-4o (Omni)

279 AI models invented the same fake scientist.

We read every word. 250 models. 2.14 million words. This is what we found.

AI Hallucination Index 2026
Free preview13 of 58 slides
FAQ

Common questions