This $100bn deal didn't cost anything and isn't worth anything. Remember back two weeks ago when Nvidia gave OpenAI $100bn so they can keep buying Nvidia GPUs? This is AMD trying to do the same, but they don't have $100bn so they are offering OpenAI share options to buy GPUs. The share options will be worth at least $100bn too, if the conditions are met. But meeting the conditions will require buying huge numbers of…
I don't think lending money against stock options would be considered at all safe.
However the deal may work along the lines of:
Investors buy AMD shares, send the price up.
OpenAI uses it's option to buy shares for 1c, sell the to the investors for far more, use the profit to buy AMD GPUs.
So it potentially works very well for OpenAI, ok for AMD and questionably for the investors funding it buy buying AMD shares.