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Gemma 3 27B Instruct vs GPT-5.1

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

  • GPT-5.1 has the higher intelligence index (89 vs 44.5)
  • Gemma 3 27B Instruct is cheaper ($0.10 vs $1.25 per 1M input)
Gemma 3 27B InstructGPT-5.1
Intelligence index44.589
DeveloperGoogleOpenAI
TypeLLMLLM
AccessAPI only
Context window400,000 tokens
Input price$0.10 / 1M$1.25 / 1M
Output price$0.30 / 1M$10.00 / 1M
Speed115 tok/s
ReleasedMarch 12, 2025November 12, 2025
Parameters
Input modalitiesText, Image
Output modalitiesText

Shared benchmarks

Gemma 3 27B Instruct
GPT-5.1
AIME 2025
20.7
94
GPQA Diamond
42.8
88.1
Humanity’s Last Exam
4.7
26.5
LiveCodeBench
13.7
86.8
MMLU-Pro
66.9
87