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GPT-5.2 vs Grok 4.3

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

  • Grok 4.3 has the higher intelligence index (90.1 vs 86.2)
  • Grok 4.3 is cheaper ($1.25 vs $1.75 per 1M input)
  • Grok 4.3 is faster
  • Grok 4.3 has a larger context window (1M)
GPT-5.2Grok 4.3
Intelligence index86.290.1
DeveloperOpenAIxAI
TypeLLMLLM
AccessAPI onlyAPI only
Context window400,000 tokens1,000,000 tokens
Input price$1.75 / 1M$1.25 / 1M
Output price$14.00 / 1M$2.50 / 1M
Speed73 tok/s88 tok/s
ReleasedDecember 11, 2025May 6, 2026
Parameters
Input modalitiesText, ImageText, Image
Output modalitiesTextText

Shared benchmarks

GPT-5.2
Grok 4.3
GPQA Diamond
92.4
90.1
Humanity’s Last Exam
35.4
35