Frankly it does not matter if there is gap because for most practical use-cases the end user can barely perceive the difference in intelligence.

On paper frontier models will be ahead of the curve but I don't think hardly anyone will be able to tell if a piece of work, say a landing page, is created with Fable or GLM and that is the point. The perceptible intelligence will reach a point beyond which it is no longer considered, except for some narrow use-case.