What does it mean when a user sees the words GPT-5.2-Codex-Max on the Codex web page?

OpenAI and Anthropic front-end updates accelerate: multiple web builds have been launched, and Codex suspects GPT-5.2 Codex-Max

A number of developers and observation accounts said on social platforms that OpenAI and Anthropic's web products have been intensively updated with f...