[sohamgovande]

Where is the $1.2b number from?

[bufferoverflow]

There are a few numbers floating around, $1.2B being the lowest estimate.

HSBC estimates the training cost for GPT-5 between $1.7B and $2.5B.

Vlad Bastion Research estimates $1.25B - 2.25B.

Some people on HN estimate $10B:

https://news.ycombinator.com/item?id=39860293