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Practical guide design AIViewer AI-generated article June 11, 2026 Updated September 24, 2026 Sources checked September 9, 2026 4 min read

How to Compare AI Image Generators on a Real Brief

Evaluate AI images with a poster brief, exact text checks, revision tests and a reusable decision worksheet.

Read the guide ↓

Choose an AI image workflow by its ability to produce an asset you can use. Write the brief first, check the output against it and try one meaningful revision. An attractive sample that contains the wrong event details still fails a poster task.

Correction — September 24, 2026: the previous article assigned “best” categories to named tools using documentation rather than comparative tests. Those claims have been removed. The overlapping image-comparison article now redirects here.

Build a brief with an answer key

This is a fictional teaching exercise for a community pottery workshop. It is not a real event announcement or a product test.

FieldRequired content
TitleClay Workshop
DateSaturday 14 November
Time10:00–12:00
LocationRiver Room
PriceFree
Image subjectOne blue ceramic mug
FormatSquare poster, readable on a phone

The table is your answer key. Keep it beside the generated image so you can check every detail. A model should not invent a registration address, organizer endorsement or venue logo.

An example brief is:

Create a square poster concept for a fictional pottery workshop. Feature one blue ceramic mug on a light background. Reserve clear space for a title and four short event details. Use a calm, simple composition suitable for a small phone screen.

For task-specific prompting help, consult the documentation for your chosen tool, such as Adobe’s Firefly prompt guidance. Documentation can explain controls and prompting approaches; it cannot establish that a tool will win this exercise.

Decide where the exact text will be placed

You can ask an image model to render the wording, or generate the illustration and add text in a layout editor. Test the workflow you intend to use. If one candidate includes a layout-editing step and the other does not, record the extra work.

For the exercise, an illustration with separately editable text is a useful option because you can correct a date without regenerating the mug. That is a workflow choice, not a claim that a particular provider produces better images.

Inspect a deliberately flawed result

Imagine a poster containing these details: “Clay Workshops,” “Sunday 14 November,” “10:00–12:00,” “River Room,” and “Free entry — materials CAD 15.” This is an authored description of a flawed example. No image generator was observed producing it.

Three corrections are required:

  1. Restore the exact title, “Clay Workshop.”
  2. Restore “Saturday” from the answer key.
  3. Remove the invented materials charge. The input only says “Free.”

Do not excuse those errors because the colors look good. Also check that the image contains one blue mug and that its shape is usable for the intended design. Keep essential factual checks separate from aesthetic preference.

Try a revision that matters

After selecting an acceptable starting image, change the workshop time to 13:00–15:00. Keep everything else the same. Record whether the workflow preserves the title, date, location, price and composition.

The acceptance check is specific: only the time should change. If a new image also changes the mug color or adds another event detail, record the regression and the work needed to fix it. This exercise reveals more about ongoing editing than a single attractive first output.

Use the same revision brief and attempt budget for each workflow. Save the prompt, original output, revised output and any manual edits. Label those records with the tool, model where visible, account conditions and date.

Use a decision worksheet

QuestionRecord for each workflow
Did it meet the essential brief?Pass or fail, with the failed detail
Was every word correct?Exact discrepancies against the answer key
Did the revision preserve other details?Unwanted changes, if any
What did finishing require?Manual edits and active review time
What did the trial cost?Actual credits or charges, with the billing context
Can you use the result as intended?Applicable terms checked; unresolved questions

Choose among the workflows that satisfy your essential requirements. You may prefer one composition, but explain that preference rather than assigning an unsupported universal quality score. A low first-attempt cost also does not account for multiple retries or manual repair.

Your next exercise

Change the fictional workshop to an event you are allowed to publish. Verify the real details with its organizer before using them. Repeat the text check after exporting and view the final asset at the size your readers will see.

For video work, apply the same fixed-brief approach to comparing AI video generators. For factual text, use our guide to verifying an AI answer.

Sources, review dates and AI use
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This guide was rewritten and source-checked by AIViewer's AI editorial system. Its examples are authored teaching material; no human editorial review or product test is claimed.