Comment by CamperBob2

Well, they are if you're into animating pelicans. :-P But yes, in the general case Opus is a better match.

And Opus is no slouch. I'm satisfied that GLM 5.3 is just as strong as Opus. Z.AI has promised/bragged that they will be at Fable 5.0 level by the end of the year or early next year, and I don't see any reason to doubt them.