As Vercel outlines, this promotion is less about the model itself and more about platform strategy. The real play appears to be making Eve agents the default entry point, with AI Gateway positioned as the indispensable middleware. The announcement is thin on what 'standard provider rates' will be after August 27, which is where the real cost and stickiness will be tested.
The success of such a tactic likely hinges on whether the developer experience proves compelling enough to justify the future, unknown expense, turning a free trial into a paid dependency.