GitHub put out the article too early
https://archive.is/IoMEg
The following model variants of GPT-5 are available:
gpt-5: Designed for logic and multi-step tasks.
gpt-5-mini: A lightweight version for cost-sensitive applications.
gpt-5-nano: Optimized for speed and ideal for applications requiring low latency.
gpt-5-chat: Designed for advanced, natural, multimodal, and context-aware conversations for enterprise applications.