We haven't run Muse Spark through a real campaign yet — its developer API just opened as a US-only public preview. But the coding benchmarks are the least interesting part of this launch for marketers. The real story is where it's about to live.
Export your RSA asset report, ask Gemini to grade every pin on 4 dimensions Google doesn't even measure, flag the bottom 30, then rewrite them with a structured prompt. The full audit takes 2.5 hours, saves about 6 versus doing it by hand, and the rewritten assets routinely lift impression volume and ad strength within 30 days.
A battle-tested 6-stage pipeline that turns one brief into 200 ad creatives in 9 days — the angle matrix math, the production sprint, the pre-launch ranking, and the kill/scale rules that surface 14 winners by day 9.
An opinion piece on Advantage+ Audience Expansion drawn from 80+ accounts: the three situations where leaving the toggle on works brilliantly, the four where it tanks your pipeline, and the 10% / 30% cost-of-wrong-conversion rule I use to decide.
