GPT-4 API general availability and deprecation of older models in the Completions API

OpenAI says the GPT-4 API is generally available and older models in the Completions API will be deprecated. Only the title confirms these two facts; the post body is empty and does not disclose scope, timeline, or affected model names. The real issue to watch is migration cost: this is both an API and model transition.

Why it matters: This is a meaningful OpenAI platform update with strong HKR-K and HKR-R: GPT-4 API GA plus Completions deprecations affects developers immediately. It stays below p1 because the body is absent, so rollout scope, deadlines, and the affected model list are not disclosed.