OpenAI cuts GPT-5.6 prices after AI-assisted inference optimization

OpenAI cut prices for its GPT-5.6 Terra and Luna models by 20% and 80%, respectively, and says its higher-end Sol model helped rewrite production inference kernels as part of work that reduced serving costs by 20%. The claims are company-reported, but the pricing change is immediately consequential for builders comparing the economics of high-volume and agentic workloads.

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• OpenAI · center · factuality: high
  Advancing the price-performance frontier with GPT-5.6
• Simon Willison · center · factuality: high
  Advancing the price-performance frontier with GPT‑5.6