The recent funding round for OpenAI has attracted the attention of the three most valuable technology companies, highlighting the importance of the artificial intelligence startup within the wider tech sector.

Nvidia Corp., the leading manufacturer of computer chips globally, has shown interest in investing in a round that could value OpenAI at over US$100 billion, according to individuals with knowledge of the situation. Apple Inc. and Microsoft Corp. are also exploring their involvement in the funding, as reported by the individuals, who wished to remain anonymous due to the confidential nature of the discussions.

The investment round is likely to be led by Thrive Capital, which will invest around US$1 billion, Bloomberg reported earlier this week. Nvidia has mulled an investment of about US$100 million into the round, according to two of those.

This increasing dominance by big tech in AI has also increasingly come under scrutiny, with antitrust regulators in the EU and US raising concerns about Nvidia’s commanding position in the AI chip market and Microsoft’s all-encompassing partnership with OpenAI. In response to its partnership with OpenAI, Microsoft integrated its services into its Windows and Copilot AI platforms-a strategic move thought to enhance its offerings and drive growth.