Between each new prompt in chat OpenAI resets me to gpt6 away from 5.6

A user on a pro account (100usd/month) is experiencing frustration with OpenAI's chat interface. They report that the model choice automatically reverts to "latest model" (gpt6) after each new prompt, despite their preference to remain on gpt5.6. This forces them to manually switch back to gpt5.6 repeatedly.

This report highlights a user experience issue where OpenAI's chat interface defaults to a newer model (gpt6) over a user's preferred older version (gpt5.6), unlike previous behavior that allowed model persistence.