Elon Musk is already casting doubt on OpenAI’s new, up to $500 billion investment deal with SoftBank (SFTBY) and Oracle (ORCL), despite backing from his allies — including President Donald Trump.

The joint venture will deploy US$100 billion “immediately” and have a goal of increasing to “at least” US$500 billion in AI projects, including data centers and physical campuses.

OpenAI and Japanese conglomerate SoftBank will each commit $19 billion to fund a joint venture to develop data centers for artificial intelligence in the U.S., the Information reported on Wednesday, citing OpenAI CEO Sam Altman speaking to colleagues.