GPT-5.6 Sol promotional price runs at least through November 21

GPT-5.6 Sol's promotional pricing ($4 input, $20 output per million tokens) runs at least through November 21, 2026. OpenAI has not said what the price will be after that date.

Who is affected:

Apps budgeting on GPT-5.6 Sol at the promotional price.

Action needed:

Budget for a possible price increase after November 21, 2026, or evaluate GPT-6.1 Sol.