OpenAI is introducing GPT-5.6, its next-generation model, two months after the release of GPT-5.5. However, the rollout to customers won’t be as straightforward as previous model updates to ChatGPT and Codex.

GPT-5.6 consists of three models

OpenAI’s new GPT-5.6 models include three versions, inspired by the Sun, Earth, and Moon. From today’s announcement:

Sol, our flagship model

Terra, a balanced model for everyday work