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GPT-5.6 Sol vs GPT-5.6 Terra

List rates and scores as of 2026-09-20. Lower $/MTok is cheaper. Higher scores rank better. Output edge: GPT-5.6 Sol

Model A

GPT-5.6 Sol

OpenAI

openai/gpt-5.6-sol

reasoningtools

List input$1
List output$5
Context1.1M
Offers53
AA intelligence47
AA coding77.4
AA agentic50.2

On plans: Cursor Business, Cursor Pro, Cursor Ultra, Copilot Business

Model B

GPT-5.6 Terra

OpenAI

openai/gpt-5.6-terra

reasoningtools

List input$1
List output$6
Context1.1M
Offers55
AA intelligence42.1
AA coding76.7
AA agentic43.2

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

Score sources on /benchmarks.