201.Caching for GPT-5.5 only works with extended prompt caching. In-memory prompt ca...2 months ago|OpenAI/OpenAI APIAPIv5.5
202.When image_detail is unset or set to auto, the model now uses original behavior.2 months ago|OpenAI/OpenAI APIAPI
209.Supervised fine-tuning Vision fine-tuning Direct preference optimi...2 months ago|OpenAI/OpenAI APIAPI
210.Managing conversations Voice activity detection Realtime with tool...2 months ago|OpenAI/OpenAI APIAPI