token.app › Compare › GPT-4o (2024-05-13) vs GLM 5.2

GPT-4o (2024-05-13) vs GLM 5.2

GLM 5.2 is 19× cheaper per token on a blended 3:1 basis. GLM 5.2 accepts the larger context window (1.0M).

Head to head
Blended price uses a 3:1 input:output mix
GPT-4o (2024-05-13)GLM 5.2
ProviderOpenAIZhipu AI
Input $/1M$5.00$0.252
Output $/1M$15.00$0.792
Blended $/1M$7.50$0.387
Context window128K1.0M
Max output4K128K
ReleasedMay 2024Jun 2026
LicenceProprietaryOpen weights
Choose GPT-4o (2024-05-13) if…
  • No clear advantage on the data we hold.
Choose GLM 5.2 if…
  • Costs less per token — $0.387 vs $7.50 blended
  • Larger context window (1.0M)
  • Open weights — self-hostable
  • Newer model (released Jun 2026)
FAQ
Which is better, GPT-4o (2024-05-13) or GLM 5.2?
We do not hold independently-run benchmark scores covering both GPT-4o (2024-05-13) and GLM 5.2, so we make no quality claim. Their pricing and specifications are compared on this page.
Is GPT-4o (2024-05-13) cheaper than GLM 5.2?
GLM 5.2 is cheaper: $0.387 versus $7.50 per million tokens blended at 3:1 input:output. Input alone: $5.00 vs $0.252. Output alone: $15.00 vs $0.792.
What context windows do GPT-4o (2024-05-13) and GLM 5.2 have?
GPT-4o (2024-05-13): 128,000 tokens. GLM 5.2: 1,048,576 tokens.
Who makes GPT-4o (2024-05-13) and GLM 5.2?
GPT-4o (2024-05-13) is made by OpenAI. GLM 5.2 is made by Zhipu AI.
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