The source consists of an Ask Me Anything (AMA) session on Reddit with OpenAI's CEO, Sam Altman, and members of the GPT-5 team, focusing on the release of GPT-5. The discussion highlights user frustrations regarding the removal of older, popular models like GPT-4o and 4.1, which users often preferred for their personality, creativity, and nuanced conversational abilities. Many users express feeling that GPT-5 is a downgrade in terms of personality, context retention, and creative writing, despite its improved reasoning. Sam Altman acknowledges the feedback and confirms that OpenAI is considering bringing back GPT-4o for Plus subscribers and will address rate limits and model transparency. The conversation also touches on safety improvements in GPT-5 and the company's intention to allow unlimited access to reasoning for Plus users in the future.