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GPT-5.4 nano 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 81.7)
  • GPT-5.4 nano is cheaper ($0.20 vs $15.00 per 1M input)
GPT-5.4 nanoGPT-5 Pro
Intelligence index81.788.4
DeveloperOpenAIOpenAI
TypeLLMLLM
AccessAPI onlyAPI only
Context window400,000 tokens400,000 tokens
Input price$0.20 / 1M$15.00 / 1M
Output price$1.25 / 1M$120.00 / 1M
Speed157 tok/s
ReleasedMarch 17, 2026October 6, 2025
Parameters
Input modalitiesText, ImageText, Image
Output modalitiesTextText

Shared benchmarks

GPT-5.4 nano
GPT-5 Pro
GPQA Diamond
81.7
88.4
Humanity’s Last Exam
26.5
42