ChatGPT 5.5, Grok 4.3, and DeepSeek V4

We made several changes to the model list.

Added

• ChatGPT 5.5 and ChatGPT 5.5 Pro

• Grok 4.3

• DeepSeek V4 Pro and DeepSeek V4 Flash

Removed

• A number of open-source models with very little usage

• All models that were marked Sunsetting