As of 13 August 2026, AI can compare two website designs.

What to actually do

1. Hand it to a person

   The route this page recommends

   A person who owns the outcome does this end to end, worth it when the failure is dear.

2. Use a tool built for this

   Second choice

3. Do it yourself

   The distant third

   A chat interface, chat-fluent skill, and roughly 30 minutes until you can act on the result.

   How to actually do it

   1. Open both designs in separate browser tabs or open their shared prototype file, and capture the same key pages and mobile states from each.
   2. Gather the project brief, target audience, primary conversion or task goal, constraints, analytics and relevant user research.
   3. Paste the brief, both designs and the available evidence into a chatbot using the prompt above, keeping Design A and Design B clearly labelled.
   4. Ask the chatbot to compare the designs against your criteria and to separate direct observations from evidence-backed conclusions and hypotheses.
   5. Check every claimed difference against the corresponding page, prototype state or evidence source, and delete any claim that the supplied material does not support.
   6. Share the comparison and unresolved questions with the product or design decision-maker, then run the proposed user tests or inspect relevant analytics before committing to the design.

   Prompt

   Compare the two website designs I provide below. Treat Design A and Design B as alternatives for the same project.
   
   Project brief:
   - Website or product: [describe it]
   - Primary goal: [for example, generate enquiries, sell products or help users complete a task]
   - Target users: [describe the audience]
   - Important constraints: [brand, technical, legal, accessibility, content or deadline constraints]
   - Decision criteria, in priority order: [list them]
   
   Design A:
   [paste screenshots, a prototype link, page copy, or a detailed description]
   
   Design B:
   [paste screenshots, a prototype link, page copy, or a detailed description]
   
   Available evidence:
   [paste user research, usability findings, analytics, survey results or business requirements]
   
   Give me:
   1. A side-by-side table covering hierarchy, clarity, navigation, content, accessibility risks, mobile considerations, visual consistency, trust and likely task completion.
   2. For every point, label it as direct observation, evidence-backed conclusion or hypothesis. Do not invent features, research findings or performance figures.
   3. The strongest advantages and disadvantages of each design.
   4. The key trade-offs and the conditions under which Design A or Design B would be the better choice.
   5. A recommendation based only on the stated goal, criteria and evidence. State what the evidence cannot establish.
   6. Five specific questions or tests that would most efficiently resolve the remaining uncertainty.
   Keep the tone direct and avoid judging visual style as a matter of personal taste unless it affects the stated goal or audience.

   Open it prefilled in ChatGPT or Claude, or copy it into Gemini, which takes no prefill link.