Graph in the README should be a scatter plot.

[halflings]

Really nitpicky remark, but it doesn't make sense to interpolate eval results between two different models, so a line plot is not appropriate (the wild drops/increases in loss make it hard to read as well). A scatter plot would convey the idea better I think!

[Motorrat]

You have a point on interpolation meaning. However the model are combined into ensembles so there might be some meaning to that too.
Yet visually I like the line plot and had only positive feedback so far. On the contrary, a scatter plot version didn’t look as illustrative.
You’re welcome to submit your version of this plot, or any other illustration. It would be a great improvement to have more illustrations here.