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OpenAI: GPT-6 Luna vs Google: Gemini 3.8 Flash

OpenAI: GPT-6 Luna and Google: Gemini 3.8 Flash are both reasoning models. This page compares the specs we have. It does not declare a quality winner — Arena and Artificial Analysis keep those numbers.

OpenAI: GPT-6 Luna lessonGoogle: Gemini 3.8 Flash lessonTest side by side

Live specs

OpenAI: GPT-6 LunaGoogle: Gemini 3.8 Flash
Typereasoningreasoning
Input$0.100 / M$0.825 / M
Output$0.500 / M$4.13 / M
Context1.1M1.0M
Inputsfile, image, texttext, image, video, file, audio
Toolsyesyes
Weightsunverifiedunverified

PickOpenAI: GPT-6 Luna if

  • input price matters. OpenAI: GPT-6 Luna lists $0.100 / M in
  • the input is long. OpenAI: GPT-6 Luna lists 1.1M context

PickGoogle: Gemini 3.8 Flash if

  • its lab, license, or the explainer matches the job better

Saved runs

No public playground runs include both models yet.