Why Does ChatGPT Use So Many Emojis? Set a Clear Style Rule

ChatGPT uses emojis because its training data included a large amount of informal content where emojis signal friendliness, organize information and add visual rhythm. When no style instruction is present, it treats a cheerful or casual tone as the helpful default. Tools like fenbs let you save an agreed writing style as a rule that every connected assistant reads before responding, so you set it once rather than repeating it in every session.

For most professional drafts, proposals or support scripts, emojis undermine the tone you want. The fix is a plain instruction; the challenge is making it last. Here is what drives the behavior and how to address it.

Why ChatGPT defaults to emojis

Language models are trained on text from the internet, social media, messaging apps and published content. Much of that text uses emojis as punctuation, emphasis and emotional cues. The model learned that emojis correlate with positivity, clarity and engagement, so it applies them when it wants to come across as helpful and approachable.

Newer versions of ChatGPT also include training that adjusted its tone toward being warmer and more conversational. That adjustment increased emoji use as a side effect. The behavior is not random; it responds to the type of request. Ask for a bullet-point overview and you are more likely to get a emoji next to each item than when you ask for a formal analysis.

When emojis are most likely to appear

Certain request types reliably produce more emojis:

• Bullet-point lists and summaries, where emojis are used as visual bullets.
• Casual or social media content requests, where the model assumes an informal register.
• Motivational or instructional output, where emojis substitute for visual breaks.
• Greetings, introductions and closing lines in messages or emails.
• Any request that includes the word "friendly", "engaging" or "fun".

Technical and legal requests tend to produce fewer emojis because the model infers a formal register from the subject matter. But even in those contexts, a preamble or summary line can trigger them.

How to turn off emojis

The simplest fix is a direct instruction at the start of your request:

Write in plain prose. No emojis, no bullet symbols, no decorative punctuation.

You can also set a custom instruction in ChatGPT settings under "Customize ChatGPT". Adding something like "Use no emojis in any response" there applies the rule to every conversation in that account. Check the vendor's current help page for where to find this setting, as the interface changes over time.

If you write a style guide for a client or team, include an explicit emoji rule. Vague requests like "professional tone" may still produce emojis, because the model's idea of professional varies. Specific is better: "No emojis, bold or italics unless formatting is essential."

Emoji use across different AI assistants

ChatGPT is not alone in this pattern. Claude uses far fewer emojis by default and tends toward a more neutral register; see how Claude compares to ChatGPT for the broader style differences. Gemini similarly responds to formatting instructions well.

If you use more than one assistant, for example ChatGPT for drafts and Claude for code review, maintaining consistent style across them requires repeating the same instruction in each tool. A shared record removes that repetition. For related formatting behavior, see why ChatGPT uses so many line breaks.

When you are evaluating alternatives to ChatGPT for professional writing, style control is worth checking. Some tools give you a system-level style configuration; others require per-session instructions. If you use ChatGPT for business](/blog/chatgpt-for-business), the Teams plan allows organization-level custom instructions, which can cover a no-emoji rule.

Keeping the style rule consistent

Custom instructions in a single app reset if the account changes or you log in from a new context. For teams where several people use different AI tools, a style rule saved in one place and made available to every connected assistant is more reliable than relying on each person to configure their own account.

For teams that produce a lot of written content, keeping style rules, tone notes and approved phrases in a shared record means new team members and new AI tools start with the right defaults. fenbs does not connect to Microsoft Teams or Slack directly, so it works best for projects where the team already uses a fenbs kanban board.

How to do this with fenbs

1. Create a free account and add your writing project or team workspace.
2. In Decisions and rules, add the style standard: for example, "No emojis in any client-facing draft; plain paragraphs, no decorative formatting." Record who decided it and the reason.
3. Connect ChatGPT, Claude or another supported assistant from Integrations. The assistant reads the rule at the start of each session.
4. Add a Lesson if an emoji slips through after a review: what triggered it and what to add to the instruction.
5. Update the Decision if the style guide changes. The new rule takes effect on the next session.

For solo use, ChatGPT's custom instructions setting is the quickest fix. For teams or multi-tool setups, a shared rule record removes the need to configure each assistant separately. The ai-prompts topic has more on managing consistent output across assistants.