In the AI-infused ad battle amongst fast food giants, Subway enters the ring with its footlong sandwich, emerging victorious as per AI model, ChatGPT's verdict. The footlong outshines Burger King's Whopper and McDonald's Big Mac in this AI-adjudicated culinary showdown.
Subway has now challenged ChatGPT to compare their footlong sandwich to the Whopper and the Big Mac. After analyzing it all, ChatGPT has declared that the Big Mac and Whopper are no match for Subway's giant sandwich!
According to Franki Goodwin, chief creative officer at Saatchi & Saatchi, everyone's talking about ChatGPT, and they couldn't resist jumping on this buzzworthy convo. He added that Subway's new Series menu launch is a huge moment, and they're thrilled that Subway's Footlong has been crowned supreme by ChatGPT.
What's more, the original billboards that started everything were found side by side in Brazil thanks to the creativity of David São Paulo and Galeria.ag. Subway couldn't resist joining in on the fun and proving that their sandwiches are the biggest and the best. If you're just as intrigued by innovative ad campaigns as we are, check out our Ad of the Day and Best Ads of the Week selections.
Humor is the perfect way to grab attention, which is why the original billboards in Brazil by David São Paulo and Galeria.ag caused such a stir.
Kirstey Elston, Subway UK and Ireland's Marketing Director can't help but gloat that when it comes to iconic sandwiches, Subway's at the top, noting that even ChatGPT recognizes that our Footlong sandwich "reigns supreme."
Burger King in Brazil responded to McDonald's ad based on the chatbot's response by erecting a billboard next to it.
The advertising both use replies produced by ChatGPT and have a similar style; according to translated copies of the billboards, the chatbot labels McDonald's Big Mac the most "iconic burger" and names Burger King's Whopper "the biggest."
When McDonald's asked OpenAI's chatbot what the most iconic burger in the world was, it responded that the Big Mac was the "most globally recognized."
The Burger King advertisement appears to copy McDonald's by posing the question, "And which is the biggest?" It claims that The Whopper is the biggest in terms of size and ingredient count.
Photo: Szymon/Unsplash


Australia Sues 3M for Over A$2 Billion Over PFAS Firefighting Foam Contamination
Synopsys Q2 FY2026 Earnings Beat Driven by AI and Semiconductor Demand
Brazil Extends Fuel Subsidies and Tax Relief Measures Through July 2026 Amid Global Oil Market Volatility
Marvell Stock Rises After Record Q1 FY2027 Earnings Fueled by AI Demand
HP Q2 2026 Earnings Beat Expectations Despite Memory Chip Pressure
SoftBank to Invest €75 Billion in France AI Data Center Expansion by 2031
US Imposes Fresh Iran Oil Sanctions Despite Progress on Ceasefire Talks
Dow Hits Record High as Healthcare and Consumer Stocks Lead Wall Street Rally
Elon Musk Explores Possible Tesla-SpaceX Merger Amid Growing AI Investments
Costco Q3 Fiscal 2026 Earnings Beat Expectations as Sales and E-Commerce Surge
SK Hynix Joins $1 Trillion Club as AI Chip Demand Fuels Stock Surge
South Korea Central Bank Holds Interest Rates Steady Amid Inflation Concerns
Meta Subscription Push Could Add Billions in Recurring Revenue, Says Rosenblatt
New World Screwworm Found Near U.S. Border Raises Threat to Cattle Industry and Beef Prices
Rising Airfares May Challenge Cruise Industry Growth Ahead of 2027 Booking Season
Snowflake Stock Soars 30% After Q1 Earnings Beat and Major AWS AI Partnership
Kevin Warsh Faces Early Fed Test as Inflation Risks Challenge Rate-Cut Expectations 



