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GPT-5.6 Luna vs GPT-5.6 Terra

List rates and scores as of . Lower $/MTok is cheaper. Higher scores rank better. Input edge: GPT-5.6 Luna Output edge: GPT-5.6 Luna

Model A

GPT-5.6 Luna

OpenAI
openai/gpt-5.6-luna
reasoningtools
  • List input$0.1
  • List output$0.6
  • Context1.1M
  • Offers67
  • AA intelligence37.3
  • AA coding71.4
  • AA agentic42.1

On plans: ChatGPT Go, ChatGPT Plus, ChatGPT Pro 20x, ChatGPT Pro 5x

Model B

GPT-5.6 Terra

OpenAI
openai/gpt-5.6-terra
reasoningtools
  • List input$1
  • List output$6
  • Context1.1M
  • Offers63
  • AA intelligence42.1
  • AA coding76.7
  • AA agentic43.2

On plans: ChatGPT Enterprise, ChatGPT Go, ChatGPT Plus, ChatGPT Pro 20x

Score sources on /benchmarks.