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GPT-5.4 vs GPT-5 Pro

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

  • GPT-5 Pro has the higher intelligence index (88.4 vs 74.9)
  • GPT-5.4 is cheaper ($2.50 vs $15.00 per 1M input)
  • GPT-5.4 has a larger context window (1.1M)
GPT-5.4GPT-5 Pro
Intelligence index74.988.4
DeveloperOpenAIOpenAI
TypeLLMLLM
AccessAPI onlyAPI only
Context window1,050,000 tokens400,000 tokens
Input price$2.50 / 1M$15.00 / 1M
Output price$15.00 / 1M$120.00 / 1M
Speed84 tok/s
ReleasedMarch 5, 2026October 6, 2025
Parameters
Input modalitiesText, ImageText, Image
Output modalitiesTextText

Shared benchmarks

GPT-5.4
GPT-5 Pro
GPQA Diamond
92
88.4
Humanity’s Last Exam
41.6
42