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Gemma 3 12B Instruct vs GPT-5 Pro

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

  • GPT-5 Pro has the higher intelligence index (88.4 vs 40)
  • Gemma 3 12B Instruct is cheaper ($0.10 vs $15.00 per 1M input)
Gemma 3 12B InstructGPT-5 Pro
Intelligence index4088.4
DeveloperGoogleOpenAI
TypeLLMLLM
AccessAPI only
Context window400,000 tokens
Input price$0.10 / 1M$15.00 / 1M
Output price$0.30 / 1M$120.00 / 1M
Speed
ReleasedMarch 12, 2025October 6, 2025
Parameters
Input modalitiesText, Image
Output modalitiesText

Shared benchmarks

Gemma 3 12B Instruct
GPT-5 Pro
GPQA Diamond
34.9
88.4
Humanity’s Last Exam
4.8
42