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OpenAI releases two new AI models that cost less and make fewer mistakes

OpenAI has launched GPT-6 Sol and Luna, two new AI systems designed to be cheaper to use and more accurate. The company says they're built on the same foundation as its earlier Astra model.

2 min readTechCrunch AISeptember 22, 2026

OpenAI, the company behind ChatGPT, has just released two new artificial intelligence models called GPT-6 Sol and Luna. These are AI systems that can understand and respond to text, much like ChatGPT does—but OpenAI says these new versions work better and cost less money to run.

Why does cost matter? Every time you use an AI system like ChatGPT, the company running it has to pay for computer power. Lower costs mean either cheaper subscriptions for users, or more profit for the company. According to OpenAI, Sol and Luna are more efficient—they do the job while using less computing power.

The other big claim is that these models make fewer mistakes. When an AI system gives you an answer, it can sometimes be incorrect or nonsensical. OpenAI says Sol and Luna have improved accuracy, which means they'll give you better answers more often. Both new models are built on technology from OpenAI's earlier Astra model, suggesting they're part of the same family of AI systems.

For everyday users, this could mean better answers when you ask AI questions, and possibly lower prices if companies pass those savings along. For businesses using these systems, it means they can afford to use AI in more places without breaking the budget.

Original source: TechCrunch AI

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