Aya Photo / Guides

Which AI model makes the most realistic photos?

“Which is the best AI image model?” is the question everyone asks, and it's the wrong one. Image models have personalities. One renders skin and light in a way that reads as a real photograph; another draws crisp, legible text; another gives you cinematic mood; another is built for clean illustration and vector art; another can make things move. There is no model that wins all of those at once, so “best” only means anything once you say best at what.

The practical consequence: being locked to a single engine means inheriting its specific weaknesses. If the one model an app runs happens to be weak at hands, at typography, or at your particular face, you have no recourse. That is the argument for comparison rather than for crowning a single winner. Aya Photo runs several models and lets you put them side by side — unusual, since almost no competitor discloses which model it uses at all.

The five models, and what each is reached for

Here is how we'd describe the character of each model Aya Photo runs. These are qualitative generalizations from working with them, not benchmarks — and model behaviour shifts as the models themselves are updated, so treat this as a starting map, not a scoreboard.

Flux 2 Pro

Generally reached for when photographic realism is the whole point: natural skin, believable lighting, the kind of frame that doesn't announce itself as AI. In our experience it tends to hold up well on portraits and detailed scenes. Like any model built for realism, it can still stumble on the hard stuff every model finds hard — fine text, busy hands, tiny background detail — which is exactly why it's worth comparing its output against another engine rather than assuming.

Seedream 4.5

Reached for when you want a clean, well-composed, aesthetically-tuned image and strong prompt-following. In our experience it tends to give you a polished, put-together look, which makes it a natural companion to Flux 2 Pro — run a prompt through both and you'll often see two valid but differently-flavoured takes on the same idea, and you keep whichever suits the shot.

Nano Banana Pro

The one that comes up most in searches about lifelike AI photos, and generally a strong all-round pick for natural, realistic portraits. In our experience it's a dependable default when you just want a result that looks like a real person in a real place. As always, “dependable default” is a claim best tested against your own selfies rather than trusted blindly.

Recraft V3

The one to reach for when the job isn't a photograph at all. Recraft V3 is built with vector art, illustration, logos and typography in mind, so it's the pick when you need clean lettering or a designed, graphic look rather than lifelike skin. It's a good illustration of why “best model” is meaningless without context: the model you'd choose for a poster with readable text is not the one you'd choose for a candid portrait.

Kling

The video-capable one. Where the others make still images, Kling is reached for motion — turning a shot into something that moves. That puts it in a different category from the four above: you don't compare it head-to-head on skin texture, you reach for it when the deliverable is a clip rather than a frame. It rounds out the set by covering the one thing a pure image model can't do.

At a glance

The method: run the same prompt through several, keep the winner

The reliable way to find the “best” model for a given shot isn't to read a chart — it's to run the exact same prompt and the exact same selfies through several models and look at the results next to each other. One of them will read as more photographic, or catch your expression better, or handle the light you asked for more convincingly. You keep that one and discard the rest.

This is what Aya Photo's model comparison does: same input, multiple engines, you pick the winner. It's a workflow, not a gimmick — the point is that the “right” model is decided per shot, by looking, rather than settled once and applied to everything. For more on getting a natural, non-generated look out of any of them, see how to make aesthetic AI photos.

Why the model you pick interacts with your likeness

Here is the part that trips people up: a model can render beautiful, believable skin and still not look like you. Realism and likeness are two different things. A model that produces a gorgeous, photographic face has done its job on realism even if that face belongs to a stranger; another model might capture your features more faithfully while rendering them a touch less polished. That's why comparing on generic sample prompts tells you almost nothing — you have to compare on your face.

And that comparison is only fair if the face input stays constant while the engine changes. This is what Souls is for: it saves your likeness once and reuses it across every generation, so when you run the same shot through Flux 2 Pro, Seedream 4.5 and Nano Banana Pro, the only thing changing is the model — not the reference photos. Without a stable face input, you're comparing engines and whatever selfies you happened to upload that time. If your results don't look like you regardless of model, the input is usually the culprit; we go deep on that in AI photos that actually look like you.

Why most apps don't let you choose

You can only run this comparison if the app tells you which models it runs and lets you switch between them. Many AI photo apps, Aesth included, do not disclose which image models they use — so there is nothing to choose from, and no way to compare. That is a statement about disclosure, not about quality: an undisclosed model can produce excellent photos. It just means the decision has been made for you, and if that one engine is weak at the thing you need, you're stuck with it.

Aya Photo's position is the opposite one: the models are named, and putting them side by side is a core part of the flow. If you're weighing the field more broadly, the best Aesth alternatives covers the other apps in this space, and viral AI headshots covers the looks people actually generate.

So which one should you use?

For a realistic person in a realistic setting, Nano Banana Pro, Flux 2 Pro and Seedream 4.5 are the three we'd put a shot through first, keeping whichever nailed both realism and likeness. Reach for Recraft V3 when the deliverable is graphic — text, illustration, a designed look — rather than a photo, and Kling when you want motion. But the honest answer to “which model” is: don't decide in the abstract. Load your selfies, run the same prompt through a few, and let your own eyes pick.

Realistic AI photos, answered

Which AI model is best for realistic portraits?

It depends on what you mean by realistic. Some models render skin and light in a way that reads as photographic; others are stronger at typography, illustration, or motion. The reliable move is to run the same prompt and selfies through several models and keep the one that looks most like a real photo of you — which is what Aya Photo's model comparison is for.

What is Nano Banana Pro?

It's one of the AI image models Aya Photo runs, and in our experience a strong all-round choice for natural, realistic portraits — which is why it shows up in searches about lifelike AI photos. Because model behaviour changes over time, judge it by comparing its output on your own selfies rather than trusting a fixed ranking.

Can I use more than one AI model?

In Aya Photo, yes — it runs Flux 2 Pro, Seedream 4.5, Nano Banana Pro, Recraft V3, Kling and more, and you can send one prompt to several and keep the best. Most apps run a single undisclosed model, so there's nothing to compare.

Does Aesth say which model it uses?

No. Aesth's App Store listing doesn't disclose which image models it runs, so you can't pick a model or compare engines. That's a statement about disclosure, not quality — see Aya Photo vs Aesth for the fuller comparison.