OpenAI Unveils GPT-5.6: A New Frontier in Intelligence and Efficiency

GPT-5.6

We are launching the GPT-5.6 family, featuring Sol, Terra, and Luna models that set new standards for intelligence and cost-efficiency. Our flagship Sol model outperforms competitors in coding, cybersecurity, and science while using fewer tokens. With new ultra settings for parallel agent coordination and robust safeguards, GPT-5.6 delivers stronger performance per dollar and more polished results for professional workflows.

"The result is stronger performance per dollar: more successful work for the same spend, or comparable results at a lower total cost."