(Reuters) - OpenAI, the startup behind the popular ChatGPT, is reportedly in discussions to raise billions of dollars in a new funding round that could see it valued at above $100 billion, the Wall Street Journal reported on Wednesday.

The funding round is expected to be led by venture capital firm Thrive Capital, which is poised to invest approximately $1 billion, the report said, citing people familiar with the matter.

Tech giant and OpenAI backer Microsoft ( MSFT ) is also expected to put in money, it added.

OpenAI, Microsoft ( MSFT ) and Thrive Capital did not immediately respond to Reuters' requests for comment.

ChatGPT, a chatbot that can generate human-like responses based on user prompts, has driven AI's popularity and fueled a meteoric rise in the valuation of the San Francisco-based firm.