Image quality
Strong, inside a band
It gives you the neighbourhood, and the neighbourhood is often exactly what you wanted.
Within atmosphere, texture, mood and abstract illustration, the output is good enough on the first or second attempt to be a genuine time-saver backgrounds, surfaces, weather, light, conceptual metaphors. These are jobs where nothing needs to be correct, only convincing, which is precisely what approximation is for.
The band narrows as the request becomes specific. A described object with named materials is usually plausible and worth a proper look; a particular real object is a family resemblance at best. That gradient is the single most useful thing to internalise, and it is what the prompt library is organised around.
What holds it back from unqualified praise: the ceiling is not craft but specificity. You cannot climb out of the vague band by prompting harder, only by moving the precise part of the job somewhere else.
Editing
The best part, and underused
The mode that decides how much of the output you can keep and almost nobody reaches for it.
The default instinct when a picture is nearly right is to generate again. That is the worst available move, because a new attempt differs everywhere including the parts that worked. Editing is the only mode that preserves anything, and it works on your own photographs too, which quietly makes this a tool for improving pictures you already have rather than only inventing new ones.
Worded well one target, one change, and an explicit statement of what must stay it does what you asked and leaves the rest alone. That is a meaningfully different product from the one people describe after an afternoon of generating.
The caveats are real: there is no undo but the file you saved, and quality drifts across repeated rounds because each edit regenerates the whole image from the last one. Four rounds in, compare against your original rather than your memory and re-anchor rather than pushing on.
Limitations
Properties, not bugs
The things it cannot do are characteristics of the category, not defects awaiting a patch.
Rendered text is unreliable. Counts are approximated. Specific real products, places and people come back as convincing relatives. Nothing is reproducible, so the same prompt never returns the same picture. Extremities go wrong often enough to need checking every time.
It matters that these are framed correctly. Treating them as bugs leads to waiting for a fix, rewriting prompts that were never the problem, and eventually blaming the tool for a job it was never going to do. Treating them as properties leads to designing around them setting type yourself, photographing the real product, composing counts by hand which is the difference between people who get value from this and people who bounce off it.
Where this becomes a real cost: if your work depends on exactness, no tier, prompt or update changes the answer. That is not a criticism so much as a specification.
These are qualitative bands reflecting our judgement of where the tool can be trusted, not measured pass rates. If you want numbers for your own work, the self-test below produces them honestly.