OpenAI is dropping API and credit pricing for GPT-5.6 Sol by over 20%, and the discount runs on a clock: the company says it holds for the next 3 months. Sol was the model left out when Luna and Terra got cheaper on July 30.
The lower rate is live on the API and rolling out across eligible plans for ChatGPT Work and Codex credits. Pro, Plus, and Business subscription usage stays as it was.