Stack Overflow, a popular internet forum for computer programming help, plans to begin charging large AI developers for access to its 50 million questions and answers.

This move follows an announcement by Reddit that it will begin charging some AI developers to access its own content.

The News/Media Alliance, a US trade group of publishers, has also unveiled principles calling on generative AI developers to negotiate any use of their data for training and other purposes and respect their right to fair compensation.

Large language models (LLMs) can generate programming code, and using LLMs to generate programming code is viewed as one of the technology's biggest opportunities. However, having to pay for data AI developers once grabbed for free could extend already unclear timelines to turning a profit on their emerging technologies.