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GLM-4.6 vs GPT-5.1

Zhipu AI vs OpenAI — benchmarks, pricing, and capabilities side by side.

  • GPT-5.1 has the higher intelligence index (89 vs 72.4)
  • GLM-4.6 is cheaper ($0.43 vs $1.25 per 1M input)
  • GPT-5.1 is faster
  • GPT-5.1 has a larger context window (400K)
GLM-4.6GPT-5.1
Intelligence index72.489
DeveloperZhipu AIOpenAI
TypeLLMLLM
AccessOpen weightsAPI only
Context window202,752 tokens400,000 tokens
Input price$0.43 / 1M$1.25 / 1M
Output price$1.74 / 1M$10.00 / 1M
Speed85 tok/s115 tok/s
ReleasedSeptember 30, 2025November 12, 2025
Parameters357B (MoE)
Input modalitiesTextText, Image
Output modalitiesTextText

Shared benchmarks

GLM-4.6
GPT-5.1
AIME 2025
93.9
94
GPQA Diamond
81
88.1
Humanity’s Last Exam
17.2
26.5
LiveCodeBench
69.5
86.8
MMLU-Pro
82.9
87