OpenAI GPT-5.5 Pro is listed for direct Responses API use at USD 30 per 1M input tokens and USD 180 per 1M output tokens, with a 1,050,000-token context window and up to 128,000 output tokens. No cached-input discount is offered; regional data-residency processing carries a 10% uplift, and requests can take several minutes.
Use-case fit and limitations from the existing resource record.
Available
Non-price resource facts only; pricing, history, and evidence stay in their own sections.
Decision visuals remain traceable to the existing source and verification record.
Independent ranking · native prices · evidence-linked · commercial relationships isolated from scoring and publication.