OpenAI announced it would cost less to use two of its latest AI models.

Efficiency gains drive major GPT-5.6 discounts.

July 30 : OpenAI slashed prices of its low- and mid-tier AI models on Thursday, a move that may intensify competition in the industry as U.S. companies battle cheaper Chinese…

The ChatGPT maker lowered the cost of its smaller GPT-5.6 Luna model by 80% and its mid-tier Terra by 20%, while leaving the price of its biggest and flagship Sol model…