CAPE TOWN - South African writer Coral Hart has published more than 370 books since February 2025 using artificial intelligence, a process she passionately defends despite criticism and threats.

"Grifter", "villain" -- insults abound on social media to describe the author who, in her forties, has become the symbol of AI's arrival in publishing. 

Coral Hart -- a pseudonym she uses to protect her real name -- told AFP in an interview she had received "tens of thousands" of hate messages and several death threats. 

In this hostile environment, few authors using AI agree to speak publicly and show their faces.

"I chose to be the one to step up and say, these are conversations we need to start having," Hart said. 

"This is here... They're not going to switch it off or unplug it because a bunch of authors said so."

Before she started writing with AI around 20 months ago, Hart had been working in publishing for 14 years and written several dozen works without the technology.

It took her three months to familiarise herself with the various AI models and build a framework capable of producing a book.

Now she juggles between ChatGPT, which is "really good at dialogue, terrible at prose"; Claude, "really good story structure, terrible at sex drives"; and others like Grok, "completely unhinged" but good on "spicy scenes".

"If you say, ChatGPT, write me a book, or, Claude, write me a book, you're going to get a flaming dumpster fire of trash back because it doesn't have anything (to work with)," Hart said.

The author defines the story concept, a style, details of the characters, and chapter outlines. And only then will her system generate the books.

Hart said when she started, "we could write one paragraph at a time. I usually took two or three prompts to do that."

"I can now draft the whole book in one sequence."

Since last year, AI models have "improved vastly", Hart said. "The prose has improved. The syntax has improved. The sentence structure has improved."