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DeepSeek-V3 0324 vs GPT-5.1

DeepSeek vs OpenAI — benchmarks, pricing, and capabilities side by side.

  • GPT-5.1 has the higher intelligence index (89 vs 65.9)
  • DeepSeek-V3 0324 is cheaper ($0.28 vs $1.25 per 1M input)
  • GPT-5.1 has a larger context window (400K)
DeepSeek-V3 0324GPT-5.1
Intelligence index65.989
DeveloperDeepSeekOpenAI
TypeLLMLLM
AccessOpen weightsAPI only
Context window163,840 tokens400,000 tokens
Input price$0.28 / 1M$1.25 / 1M
Output price$1.14 / 1M$10.00 / 1M
Speed115 tok/s
ReleasedMarch 25, 2025November 12, 2025
Parameters671000000000
Input modalitiesText, Image
Output modalitiesText

Shared benchmarks

DeepSeek-V3 0324
GPT-5.1
AIME 2025
41
94
GPQA Diamond
68.4
88.1
Humanity’s Last Exam
5.2
26.5
LiveCodeBench
49.2
86.8
MMLU-Pro
81.2
87