In distinction, cost-free tier customers have no selection around which design they will use. OpenAI say it's going to default to applying ChatGPT-4o which has a limit on the volume of messages it could mail. If ChatGPT-4o is unavailable then free of charge users default to working with ChatGPT-4o mini. https://chstgpt54219.buyoutblog.com/29629768/the-chat-gpt-diaries