blog/models·Oct 8, 2026·6 min·by the eroq team
Flux 3 Image vs Flux Image — which photoreal engine to use
Flux 3 Image or Flux Image? Two photoreal engines on eroq compared on price, speed, typography and natural light, and when the cheaper Flux Image is enough.
eroq has two engines with Flux in the name, and they are not interchangeable. Flux Image is eroq's high-fidelity photoreal engine: sharp textures, natural light and realistic materials, for 12 credits / image. Flux 3 Image is Black Forest Labs' latest FLUX, added in October 2026: natural photoreal rendering, believable lighting and reliable in-image text, for 32 credits / image. Speed is a wash, at about 20 seconds a take on either. The short answer: if there are words in the frame, or the image is a final deliverable whose light has to feel unstaged, use Flux 3. For text-free photoreal in volume, Flux Image is often all you need.
The numbers
| Flux Image | Flux 3 Image | |
|---|---|---|
| Price per image | 12 credits / image | 32 credits / image |
| At the entry pack | $0.12 | $0.32 |
| Typical render | about 20 seconds | about 20 seconds |
| Four takes | 48 credits | 128 credits |
| Positioned for | photoreal detail, materials | natural light, photoreal, typography |
Flux 3 costs 2.67 times as much per image. That gap is the reason this comparison exists: the names sound alike, the prices do not. A credit costs about a cent at the entry pack ($10 for 1,000), so the gap looks small per image and large per hundred.
Both work the same way in the studio. A text prompt goes in (neither reads reference pictures or edits on eroq), any of the five formats comes out for the same credits, up to four takes run at once, and both are open on any plan. Upstream moderation applies to both, and a refused prompt costs nothing. Privacy is the same too: an outside provider runs them and may retain the prompt, never for training, and with Private mode on the result itself is never stored.
Where they differ
Three things separate them, as eroq positions them:
- Typography. Flux 3 is the engine positioned for reliable in-image text: posters, packaging, signage. Flux Image's page promises photoreal detail, not lettering. If the image needs words, that is a Flux 3 job.
- Light first. Both render natural light well, but Flux 3 is the one built around it. Its prompting advice puts the light and the setting before the subject, and it is aimed at portraits and lifestyle scenes that should not look over-styled.
- Range. Flux 3 is pitched as the reliable generalist, the model to try when you are not sure which engine fits. Flux Image is a specialist in material detail.
What they share: the prompt register. Both read a photographer's brief well, with a lens, a light source and the materials named. A prompt written for one runs on the other without edits.
When Flux Image is enough
The cheaper engine is not a consolation prize. It is the right pick whenever the image is photoreal, text-free and judged on surfaces:
- Still lifes and product backdrops where the materials carry the shot: brushed aluminium, linen, wet stone, oiled leather. Name them and the detail follows the words.
- Interiors, landscapes and editorial stills where nobody is reading anything.
- Volume. A 40-frame moodboard costs 480 credits on Flux Image and 1,280 credits on Flux 3. For a board that exists to be argued over and thrown away, that difference is real money.
- Composition drafts for a photographic series you will finish elsewhere.
When Flux 3 earns the difference
- Any words in the frame. A shop sign, a label, a poster title. Write them in quotes and keep them short.
- People in natural light. Lifestyle, portraits and candid scenes where the light has to behave like real light.
- The final deliverable of a series drafted on something cheaper.
- The first try on an unfamiliar brief, since it is the generalist of the pair.
For lettering specifically, Flux 3 is not the only candidate: the GPT Image 2.5 vs Flux 3 text showdown covers when GPT Image 2.5 Sunburst is the better call, and Flux 3 typography prompts has ready-made sign, label and packaging prompts.
Draft on one, finish on the other
Because the register is shared, the two make a natural draft-and-finish pair. Three drafts on Flux Image and one final on Flux 3 cost 68 credits; four takes straight on Flux 3 cost 128 credits.
Two caveats keep this honest. First, the final is a fresh take, not an upgrade of the draft: neither model reads a picture on eroq, so lock the composition in the prompt (camera height, subject placement, light direction) before you switch. Second, a draft on Flux Image tells you nothing about lettering, since it is not positioned for it. For text-led images, skip the draft and run two takes on Flux 3 directly.
Switching takes seconds: open the draft in your Library, hit Remix and change the model. If texture rather than light is what a series is about, also read Seedream 5.0 Pro vs Flux 3 before you settle on either. Ready to test? Open the image studio.
Example prompts
Flux Image, materials only. No text, all surface: Flux Image's home ground.
A brushed aluminium espresso tamper standing on a slab of wet slate, water droplets beading on the stone, a single hard light from the upper left, deep black background, 100mm macro at f/8, crisp catalogue detail.
Flux Image, an interior for a moodboard. Natural light and texture, rendered in volume at the lower price.
A Scandinavian living room in late afternoon, low sun raking across a pale oak floor, a boucle armchair with a wool throw, an unlit ceramic lamp on a side table, soft natural shadows, 24mm interior photograph.
Flux 3, words in a photographed scene. The sign has to read and the light has to feel like dusk.
A corner hardware store in the rain at dusk, a hand-painted sign above the door reading "PARKER & SONS", warm light spilling from the windows onto the wet pavement, a bicycle leaning against the glass, 35mm documentary photograph.
Flux 3, packaging in natural light. Two lines of text on a product, lit by a window.
A kraft paper tea box on a sunlit wooden windowsill, the front label printed in dark green reading "MORNING FOG" with "Earl Grey" in smaller type beneath, steam rising from a cup beside it, soft window light, lifestyle product photograph.
Run it on both. A text-free test of light and skin before you commit a whole series to one engine.
A woman in a mustard raincoat waiting at a tram stop on an overcast morning, wet cobblestones, a tram blurred behind her, natural skin tones, 50mm lens, documentary street photograph.
FAQ
Should I move everything to Flux 3 Image?
No. Keep Flux Image for text-free photoreal in volume at 12 credits / image, and move to Flux 3 Image for lettering, people in natural light and finals.
How much more does Flux 3 Image cost than Flux Image?
32 credits / image against 12 credits / image, so Flux 3 costs 2.67 times as much at any format.
Can Flux Image render text?
It is not the engine eroq positions for lettering. For signs, labels and titles, use Flux 3 Image, or GPT Image 2.5 Sunburst, the sharpest at in-image text in the lineup.
Do Flux Image and Flux 3 Image take reference photos?
No. Both are text-to-image on eroq. To hold a face or a product across images, use Krea2 or Eroq One, which read reference pictures.
Make this with the models behind the post — start with 50 free credits, or browse every engine and its price.