Both formats look organic in the feed, and both beat polished brand film for direct response. That is where the similarity ends. If you are choosing where to put your next production budget, the difference is worth understanding, because they solve different problems.
What each format actually is
Standard UGC is a single creator speaking to a phone camera, usually from a script or a tight brief. The value is that it looks like a person, not a brand. The limit is that viewers have learned to recognise the format. The moment a creator says "so I have been using this product for two weeks," a large share of the audience knows it is an ad and keeps scrolling.
Street interview ads replace the script with real reactions. A creator stops strangers on the street and asks them questions tied to a product or problem, and the honest, unrehearsed answers are edited into short ads. Nothing is rehearsed, so nothing pattern-matches as advertising in the first second.
Hooks: scripted confidence vs real surprise
A UGC hook is only as good as the line the creator was given. A street interview hook is a real human reaction, and you cannot script surprise. When a stranger lights up, hesitates, or pushes back, that micro-moment stops the scroll in a way no brief reliably produces. Across our accounts the strongest scroll-stoppers almost always come from unplanned reactions, not from lines we wrote in advance.
Social proof: one opinion vs many
A UGC ad is one person's endorsement. A street interview ad shows five, ten, twenty different people reacting to the same product inside 30 seconds. That reads less like one paid opinion and more like public consensus, which is a fundamentally stronger trust signal for a cold audience.
Volume: the real economic difference
This is where the gap is widest. A UGC shoot gives you a handful of finished videos. A single street interview shoot day with one creator and one cameraman typically produces 40+ unique ads, because every interview yields multiple usable moments and each moment can be cut into different hooks, lengths and formats. Meta's algorithm rewards creative volume and variety, so the format that produces more distinct probes into your market feeds the algorithm faster and finds winners sooner.
So which should you run?
It is not either/or. UGC is excellent for demonstration, tutorials and specific product features, and it is cheaper to test a single angle. Street interviews win on cold traffic, on social proof, and on sheer volume per production day. Most of our accounts run both, with street interviews carrying the top of funnel and UGC filling specific product-education roles. If you only have budget for one production format and you are trying to scale cold acquisition, street interviews are where we put it.
The full breakdown of how the format works is in our complete guide to street interview ads, and you can see the production side at Marketr.