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OpenAI: GPT-6 Luna vs Anthropic: Claude Haiku 5.5

OpenAI: GPT-6 Luna and Anthropic: Claude Haiku 5.5 are both different kinds of 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 lessonAnthropic: Claude Haiku 5.5 lessonTest side by side

Live specs

OpenAI: GPT-6 LunaAnthropic: Claude Haiku 5.5
Typereasoningchat
Input$0.100 / M$0.100 / M
Output$0.500 / M$0.500 / M
Context1.1M1.0M
Inputsfile, image, texttext, image, file
Toolsyesyes
Weightsunverifiedunverified

PickOpenAI: GPT-6 Luna if

  • you need a reasoning model
  • the input is long. OpenAI: GPT-6 Luna lists 1.1M context

PickAnthropic: Claude Haiku 5.5 if

  • you need a chat model

Saved runs

No public playground runs include both models yet.