ChatGPT update lets users customize a warmer and more enthusiastic bot

ChatGPT update lets users customize a warmer and more enthusiastic bot
By: Mashable Posted On: December 20, 2025 View: 2

You can ask the bot to use fewer emojis, too.
 By 
Chase DiBenedetto
 on 
A phone shows the ChatGPT app logo. The home screen background is repeating ChatGPT logos.
If you thought ChatGPT couldn't be more enthusiastic, think again. Credit: Photographed by Joseph Maldonado / Mashable Composite by Rene Ramos.

ChatGPT can act even friendlier now, with new personality customization options that let users choose just how warm and enthusiastic the bot is in conversation.

OpenAI announced the new personality settings in a Friday post on X. The update rolled out immediately to ChatGPT users alongside a long-awaited pinned chats feature, new ways to generate or edit emails, and updates to ChatGPT browser Atlas.

The new tools add more fine tuning of ChatGPT's personality using levels of warmth and enthusiasm (labelled as "more," "less," or "default"). Users can also adjust the way the bot organizes its responses, such as how frequently it generates lists, as well as the amount of emojis it employs, in addition to its base style and tone. There's still no option to exclude emojis entirely.

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Professionals have warned that overly anthropomorphic and sycophantic chatbots can exacerbate mental health concerns, including AI psychosis and dependency. A previous ChatGPT model, the still-available GPT-4o, was adjusted earlier this year after facing criticism for "overly agreeable" behavior. CEO Sam Altman has referred to the issue as a "personality problem."

OpenAI launched its new GPT-5.2 model series one week ago, boasting new capabilities for "professional knowledge work" that include better processing benchmarks and less hallucinations, the company reports.

ChatGPT's developers also recommitted itself to its mental health and teen safety promises amid escalating lawsuits. In a blog post published Thursday, OpenAI explained it was introducing a new set of under-18 user principles to GPT-5.2 intended to create additional guardrails around sensitive topics and encourage age-appropriate interactions. It's also working on a new age verification system for young users. GPT-5.2 reportedly scores higher on internal mental health safety tests, including stress testing for self harm, than previous models.


Disclosure: Ziff Davis, Mashable’s parent company, in April filed a lawsuit against OpenAI, alleging it infringed Ziff Davis copyrights in training and operating its AI systems.

Topics ChatGPT OpenAI

Chase sits in front of a green framed window, wearing a cheetah print shirt and looking to her right. On the window's glass pane reads
Chase DiBenedetto
Social Good Reporter

Chase joined Mashable's Social Good team in 2020, covering online stories about digital activism, climate justice, accessibility, and media representation. Her work also captures how these conversations manifest in politics, popular culture, and fandom. Sometimes she's very funny.

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