ARA QSR Study — Q2 2026. Brand Intelligence for the quick-service restaurant category, using the four frontier AI models as the customer.

276 placements · 4 models × 16 customer questions · audited chains in colour, every other brand in a stepped grey · naming variants merged before counting.

Most AI shelves have holes in them. Ask the models a question and there are moments where nobody gets named at all — the category is open, and the ground is unclaimed. Fast food has no such holes. Every one of the sixty-four recommendation moments we measured was claimed by a brand.

In the second quarter of 2026 we put the customer questions to ChatGPT, Claude, Gemini and Perplexity — America's favourite fast food brand, the best value for the money, where to take the kids, which brand is cleanest — then recorded every brand they named and where it ranked.

Forty-two brands are named in total, the smallest field of any category we have charted. Chick-fil-A takes 16.3% of the shelf and McDonald's 14.5% — nearly a third of the category between two brands — and the fifteen audited chains hold 70.7% of it. This is the most consolidated shelf we have measured.

The most interesting brand on it is one we did not audit. In-N-Out Burger, a regional chain with no restaurants in the eastern United States, holds 5.8% of the shelf — more than Burger King, more than Subway, more than KFC, each of them national and each of them many times its size. Footprint is not what the models are rewarding. Being the brand people describe in superlatives is.

At the other end: Sonic was never named by any model, on any question. KFC appeared in two of the sixteen questions — a brand with a global footprint and near-total name recognition, effectively absent from the conversation the machines are having about its own category.

A shelf this full is the hardest kind to enter. There is no empty ground to claim, so every point of presence has to be taken from a brand the models already trust. For the chains already holding it, the risk runs the other way — consolidated positions are cheap to hold and expensive to rebuild once lost.