GPT-5.5 is here! Available in the API, Codex and ChatGPT today

Fingers crossed for your bank account:

Looking at the price per million tokens, GPT-5.5 appears to be twice as expensive, but efficiency gains may largely offset that.

Based on Artificial Analysis output tokens to run:

  • GPT-5.4 (xhigh): 120M tokens
  • GPT-5.5 (xhigh): 75M tokens
  • GPT-5.5 (high): 45M tokens
  • GPT-5.5 (medium): 22M tokens