The AI Wrote the Savings Itself — OpenAI Had Codex Optimize GPU Kernels and Cut GPT-5.6 Prices by Up to 80%
OpenAI cut GPT-5.6 API prices by up to 80% on Luna and 20% on Terra. The savings came from efficiency gains obtained by having the coding agent Codex automatically rewrite GPU kernels. Here's a look at a real case of an agent reaching into production infrastructure, and how to read the price cut.
