How to Generate Photoreal Images with Seedream 4.5 (Text-to-Image Tutorial)

Seedream 4.5 is ByteDance's photoreal image model — and it's the one we hand to anyone whose output will eventually be animated. Where some image models chase maximum detail (Flux 2 Pro) or maximum resolution (Nano Banana Pro), Seedream chases consistency: the kind of output that holds up when piped into a video model.

This tutorial covers the text-to-image workflow end to end, with prompt patterns and the parameters that matter.

Why Seedream 4.5 for text-to-image

Three strengths that show up in production:

1. Photoreal defaults: no "AI gloss," no over-saturated colors, no obviously synthetic skin
2. Strong identity coherence: characters are recognizable across multiple generations from the same prompt
3. Animation-friendly output: stills survive image-to-video animation without artifacts

If you're generating hero shots, character references, or anything that needs to look like a photo (not "AI art"), Seedream is the default.

The basic workflow

1. Open Seedream 4.5 on Skyvid
2. Pick Text-to-image mode
3. Write your prompt
4. Pick aspect ratio (1:1, 16:9, 9:16, 4:5, 3:4)
5. Set seed (optional — for reproducibility)
6. Generate

Each image costs 5 credits at native 2K resolution. No surprises, no resolution-tier upcharges.

The Seedream prompt formula

After hundreds of generations, a four-part structure consistently produces better results:

[Subject] + [Setting] + [Lighting] + [Style/Camera]

Example:

A young woman with curly auburn hair, sitting at a cafe window |
golden hour light streaming in from the right, soft shadows |
shot on 35mm film, shallow depth of field, editorial photography

The pipes are for readability — you can drop them in actual prompts.

Subject

The most important field. Describe the subject's identity, age, expression, clothing, and pose. Be specific: "a young woman" is weak; "a woman in her late 20s with curly auburn hair, wearing a cream cable-knit sweater" anchors identity.

Setting

Where the scene takes place. The model uses this to set background, atmosphere, and props. Be concrete: "in a cozy independent coffee shop with exposed brick walls" beats "in a cafe."

Lighting

The single biggest lever for photoreal output. Some patterns that consistently land:

• "Golden hour rim lighting from the left"
• "Soft north-facing window light, overcast day"
• "Hard direct sun, deep shadows, high contrast"
• "Mixed neon and tungsten, late-night street ambiance"
• "Studio softbox, beauty light from above, fill from below"

Specifying lighting is what turns "AI render" into "photograph."

Style / Camera

Optional but powerful. Use camera grammar:

• "Shot on 35mm film, Kodak Portra 400"
• "Medium format, Hasselblad H6D"
• "Editorial photography, Vogue aesthetic"
• "Documentary photojournalism, gritty"
• "Architectural photography, dead-on perspective"

The camera vocabulary acts as a style transfer signal. Seedream's training set is dense with photography metadata, so these references work.

Five sample prompts that produce strong output

1. Portrait, editorial

A man in his 40s with greying temples, wearing a charcoal turtleneck,
sitting in a wood-paneled study. Soft north-facing window light from
the left, gentle shadows. Shot on Hasselblad medium format, editorial
portrait photography, shallow depth of field.

2. Product hero

A glass perfume bottle on a polished black marble surface, a few
drops of liquid beading on the glass. Golden hour rim lighting from
the left, dramatic side shadows. Editorial product photography, 35mm,
shallow depth of field, the bottle in sharp focus.

3. Lifestyle, candid

Two friends in their late 20s laughing at a small wooden table in a
sunlit Lisbon cafe, espresso cups between them. Warm afternoon light,
window in soft focus behind. Documentary photography, Leica M11,
natural and unposed.

4. Landscape

A snow-dusted mountain ridge at dawn, alpenglow on the peaks, valley
filled with mist below. Cold, clean light, deep shadows in the
valleys. Large format landscape photography, ultra-sharp foreground
to background.

5. Architecture

A modern brutalist concrete library interior with floor-to-ceiling
glass walls. Late afternoon sun cutting through, dust motes visible
in the light. Architectural photography, dead-on perspective, deep
shadows and bright highlights.

Each of these costs 5 credits. Run them as-is to see Seedream's defaults.

Aspect ratio cheat sheet

Aspect ratio matters for downstream use. If you're going to animate the still into video, generate at the target video aspect ratio — don't crop later.

Seed and reproducibility

Every Seedream generation has a seed. Reusing the same seed + prompt gives the same image. This is useful for:

• Iteration: tweak one word in the prompt, keep seed, see the targeted change
• Variations: keep prompt, change seed, get distinct outputs
• Documentation: save seeds with your final outputs so you can regenerate

You can find the seed on each generated image's metadata in Skyvid's history.

When Seedream isn't the right choice

For some use cases, switch models:

• In-image text (signage, labels, typography): use Flux 2 Pro
• Native 4K output: use Nano Banana Pro
• Stylized illustration (anime, painterly): Seedream handles these but Flux 2 Pro tends to be more flexible

For everything photoreal that needs to look like an actual photo, Seedream is the right call.

What about image-to-image?

This guide focused on text-to-image. For editing existing images with Seedream — outfit swaps, background changes, restyling — see our image-to-image tutorial.

Pair with video

If your endgame is video, generate the still in Seedream 4.5, then animate with Kling 2.5 for cinematic motion or Seedance 2.0 for motion-heavy content. The animation-friendly aesthetic of Seedream output is exactly why we recommend this pipeline. Full breakdown in our image-to-video guide.

Try it

Open Seedream 4.5 on Skyvid — free tier includes daily credits. Run one of the five sample prompts above as a baseline, then start modifying.

FAQ

What's the max resolution for Seedream 4.5? 2K native (2048 on the long side). For 4K, upscale post-generation with Topaz (bundled in Studio tier) or use Nano Banana Pro for native 4K.

How does Seedream compare to Flux 2 Pro for photoreal output? Both are photoreal. Seedream's aesthetic is more editorial / cinematic and survives animation better. Flux 2 Pro has the edge on extreme detail and in-image text. For animated workflows, Seedream wins.

Can I generate in batches? Yes — Skyvid's interface lets you queue multiple seeds for the same prompt. Each costs 5 credits.

Does Seedream produce NSFW content? No. Like all models on Skyvid, NSFW outputs are blocked by safety classifiers.

How long does generation take? Typically 10-15 seconds per image, faster than most frontier image models.