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OpenAI: GPT-6.1 Sol vs Anthropic: Claude Opus 5.5

OpenAI: GPT-6.1 Sol and Anthropic: Claude Opus 5.5 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-6.1 Sol lessonAnthropic: Claude Opus 5.5 lessonTest side by side

Live specs

OpenAI: GPT-6.1 SolAnthropic: Claude Opus 5.5
Typereasoningreasoning
Input$2 / M$4 / M
Output$10 / M$20 / M
Context1.1M1.0M
Inputsfile, image, texttext, image, file
Toolsyesyes
Weightsunverifiedunverified

PickOpenAI: GPT-6.1 Sol if

  • input price matters. OpenAI: GPT-6.1 Sol lists $2 / M in
  • the input is long. OpenAI: GPT-6.1 Sol lists 1.1M context

PickAnthropic: Claude Opus 5.5 if

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

Saved runs

No public playground runs include both models yet.