Faithful or creative AI upscaler: which one for faces, products and textures?

Search the catalog for upscale and you get a short list of models that all promise the same thing: a bigger, sharper picture. They do not all mean the same thing by it. Some enlarge what is already in the file and try hard not to change it. Others treat your picture as a sketch and paint new detail on top: pores, threads, brick edges that were never there. Both are useful. Pick the wrong one and you get either a soft enlargement of a texture you wanted to see, or a stranger's face where your client's used to be.

This post sorts them by one question, which is the only one that matters before you press Generate: does the result have to stay true to the original?

Two kinds of upscaler, and how to spot each

A faithful upscaler reconstructs detail that the small file implies and stops there. One image upscaler in the catalog describes itself as preserving the original content without regeneration, and its only real choice is a multiplier of 2x or 4x. That is the shape of a faithful tool: few settings, no prompt, nothing to steer.

A creative upscaler is a generator wearing an upscaler's name. It reads your picture as a strong hint and renders a new, larger one that follows it. The giveaway is a setting called creativity. Several image upscalers in the catalog have one under Advanced: on most of them negative values stay stricter to the source and positive values add more generated detail, with zero as the default. On one of them the slider only goes upwards from zero, so it never gets stricter than its default.

Read the model description before the name. Two upscalers come with no settings at all, so the description is all you have: one says it enhances textures, fine details and facial features, the other says it refines textures and adds polish and, in its own words, is not increasing resolution. A model called an upscaler that does not make the picture bigger is exactly the surprise worth catching before you pay for it.

Pick by subject, not by sharpness

• A real person's face. Faithful, every time, or a creativity setting at zero or below. Invented detail on a stranger in a stock-style picture is decoration; on a portrait of someone people know, it quietly makes a different person. The old photo restoration guide goes through this with family pictures.
• A product. Faithful. A logo, a stitched seam, a label, the exact shape of a bottle cap: a creative pass may redraw any of them, and the redrawn version is wrong in a way a buyer notices.
• A cut-out on a transparent background. Faithful, and check for a transparency switch. The faithful upscaler above has one to preserve transparent areas, on by default; turned off, the empty layer comes back filled in. The background removal post explains why that matters for a listing.
• Textures, landscapes, fantasy art, concept renders. Creative is the better tool here. A generated cliff face or a sci-fi corridor gains a lot from new micro-detail, and nobody can say the invented stones are the wrong stones.
• Anything with lettering. Faithful, low expectations. A creative pass treats letters as shapes and tends to make them worse. Better still, keep text out of the picture and set it yourself, as the poster guide recommends.

Turning the creativity slider without wrecking the picture

When creative is the right family, treat the slider the way you would treat volume on an unfamiliar speaker. Start at the default, look at the result at full size, and only then move it. A small step up is often enough to make a flat render look detailed; a large step can change the character of the image, smoothing a weathered wall into a new one or turning grass into a different plant.

1. 01Run the upscaler once at its default setting.
2. 02Open the result at full size and look at the places you care about: eyes, edges, the subject's outline.
3. 03If it is too soft, raise creativity by a small step and run again. If it changed something it should not have, lower it.
4. 04Stop at the first version you would publish. Every further run costs what the Generate button shows, the same as the first.

Video upscalers follow the same split

The catalog also has video upscalers, and one of them makes the choice explicit: a creativity setting where zero means a source-faithful upscale and the top of the range means creative detail enhancement, plus an optional prompt to guide that detail. Note that its default sits at the creative end, so if you upscale a clip of a real product or a real person, move it to zero yourself. Other video upscalers simply ask for a target resolution. Each video upscaler states the longest clip and the largest file it accepts in its field description, and the limits differ, so check before you upload.

How to run one in the studio

Upscalers take a picture as input, not a prompt. Download the render you want from your feed or library, pick the upscaler in the studio, add the file with the image button, and open Advanced for the multiplier, target size or creativity. The price of that exact render is shown before you press Generate and can change with the settings, so check it after you change the target size. A render that fails is not charged.

What an upscaler cannot do

No upscaler recovers information that was never captured. A faithful one makes a small picture bigger and cleaner, but a face that was a few pixels wide stays a guess; a creative one fills that guess with something plausible, which is not the same as something true. That is why neither belongs anywhere the picture is evidence: an ID photo, a damage claim, a property listing. An upscaler will not fix a weak composition, a wrong colour or a bad crop either; those are a new render or an edit. And it will not reliably rescue small text. If a draft is far too small for its final use, rendering again on a model that outputs a larger picture often beats upscaling the draft, and the re-roll post explains why the price per usable picture is the number to compare.