Why we chose this prompt: A single long line of text with numbers, a percent sign and a date. One wrong or missing character fails it, so this measures exact text rendering rather than text that merely looks plausible.
A white A4 poster on a brick wall reading exactly "SPRING CLEARANCE - EVERYTHING 40% OFF - SATURDAY 14 JUNE, 9AM TO 6PM". No other text in the frame.
A white A4 poster on a brick wall reading exactly "SPRING CLEARANCE - EVERYTHING 40% OFF - SATURDAY 14 JUNE, 9AM TO 6PM". No other text in the frame.