GPT-4 API now available to all

The GPT-4 API is now available to all paying customers, with OpenAI retiring older models in the Completions API in six months and encouraging users to adopt the Chat Completions API.

GPT-3.5 Turbo, DALL-E, and Whisper APIs are also now generally available, with fine-tuning for GPT-4 and GPT-3.5 Turbo expected later this year. Applications using stable model names for base GPT-3 models will automatically be upgraded to newer models on January 4, 2024. Priority access to GPT-3.5 Turbo and GPT-4 fine-tuning will be granted to users who previously fine-tuned older models.