Model parameter count and training set token count are fixed. But other things such as epochs are not.
In the same amount of time, you could have 1 epoch or 100 epochs depending on how many GPUs you have.
Also, what if their claim on GPU count is accurate, but they are using better GPUs they aren't supposed to have? For example, they claim 1,000 GPUs for 1 month total. They claim to have H800s, but what if they are using illegal H100s/H200s, B100s, etc? The GPU count could be correct, but their total compute is substantially higher.
It's clearly an incredible model, they absolutely cooked, and I love it. No complaints here. But the likelihood that there are some fudged numbers is not 0%. And I don't even blame them, they are likely forced into this by US exports laws and such.