March 6 (Reuters) - Japanese conglomerate SoftBank is seeking ​a loan of up to $40 billion, primarily ‌to finance its investment in ChatGPT-maker OpenAI, Bloomberg News reported on Friday, citing people familiar with the ​matter.

The bridge loan would hold a ​roughly 12-month tenor, Bloomberg reported, with four ⁠lenders, including JPMorgan (JPM.N), opens new tab, underwriting the facility.

Talks with banks ​are ongoing, and terms could change, according to ​the report.

Reuters could not immediately verify the report. OpenAI and SoftBank did not immediately respond to Reuters' ​request for a comment.

SoftBank Chief Executive Masayoshi ​Son has made an "all in" bet on OpenAI, ramping ‌up ⁠investment in artificial intelligence. The Japanese firm held a stake of about 11% in OpenAI at the end of last year.

OpenAI is ​laying the ​groundwork for ⁠an IPO that could value the company at up to $1 trillion, ​Reuters exclusively reported last year.

Last month, ​the ⁠firm said it would raise $110 billion in a funding round that could value it at $840 billion, ⁠including $30 ​billion each from SoftBank ​and U.S. chipmaker Nvidia, and $50 billion from e-commerce retailer Amazon.