AI event posters can stand out — if you push back on the defaults
Original: AI-generated posters don’t have to be horrible
Why This Matters
AI design homogenization is a growing problem; this shows prompt strategy, not model capability, is often the bottleneck.
UK blogger John Hartnup tested ChatGPT's image generation for a fictional spring fayre poster on June 7, 2026. After rejecting the default 'craft fair' aesthetic — bunting, pastels, hand-drawn florals — he prompted the model for Bauhaus-inspired geometric minimalism, producing a visibly distinct result and prompting a broader discussion about AI design homogenization.
The post opens with a well-circulated Facebook collage showing dozens of AI-generated local event posters that are nearly indistinguishable — pastel palettes, airbrushed florals, bunting. Hartnup uses a Leamington Beer Festival poster as a real-world example, noting the issue isn't quality but numbing sameness.
His experiment: he fed ChatGPT invented event details for a 'Spring Fayre' (April 21, Mill Beach Park, free entry, samba and dhol bands, circus skills) and explicitly asked it to avoid the default aesthetic. The first result still landed squarely in craft-fair territory. A second prompt — asking for 'a completely different design aesthetic of your choice' and treating the first as a 'what not to do' — produced a Bauhaus-influenced geometric minimalist design.
ChatGPT itself labeled the style: Bauhaus/Modernist, Swiss Style (International Typographic Style), Geometric Minimalism. It noted that most local event posters default to exactly what the first attempt produced. The model also volunteered that it could push further into brutalism, risograph printing, 90s rave aesthetics, or Japanese minimalism. Hartnup's conclusion: the bland defaults are a user behavior problem as much as a model limitation.