Ask a chatbot to write the same kind of work email in two different ways, and you may get strikingly different results. One response might sound crisp and corporate. The other might gush about words that “warmed our hearts.”

Researchers at Johns Hopkins University found that AI produced less formal and less complex workplace writing when prompts contained language patterns more commonly associated with women.

The researchers tested prompts for emails, job applications, and resignation letters across OpenAI’s GPT-4, Meta’s Llama, Google’s Gemini, and Mistral’s Vibe. None of the four companies immediately responded to requests for comment.

Researc…