While OpenAI says the price reductions were enabled by GPU kernel improvements and better speculative decoding, cutting Luna's price by 80% reflects the intensifying competition in the AI market.

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…