OpenAI slashes GPT-5.6 Sol API prices until at least Nov 21

OpenAI: GPT 5.6 Sol price reduction (until at least Nov 21)

OpenAI has temporarily reduced API pricing for its GPT-5.6 Sol model, cutting input costs by 20% and output costs by 33% for standard usage, with similar reductions for cached input and cache writes. The discount applies to both short and long context windows and is available until at least November 21. Developers using the API can take advantage of the lower rates for a limited time, potentially reducing their inference expenses.