Prompt LibraryPrompt Library / Portrait Consistency Set (Same Person, Three Expressions) / for Seedream
Portrait Consistency Set (Same Person, Three Expressions) Prompt for Seedream
This is the Seedream version of the portrait consistency set (same person, three expressions) prompt: one person, three expressions, one unchanging face — the casting-sheet set used to anchor a character or a real person's likeness. It is formatted the way Seedream takes prompts best. Free — copy it, replace the bracketed parts, and paste it in.
The prompt
Push copies this prompt with a reference line naming your image, and downloads the image file — attach it in the model to complete the pair. This page stages the pair for you; it cannot upload into the model itself (sites cannot reach into each other), so the final attach happens there. The image is downscaled to at most 1024px and stored only in this browser, paired with this prompt. If browser storage is full, it is kept for this visit only.
The deliverable — and how to check it
Deliverable: one triptych image with exactly 3 headshots — neutral, smiling, serious — of the same person, same hairstyle, wardrobe, backdrop and light in all three. Acceptance check: swap test — cover two panels; the visible face must be unmistakably the same person as the other two when uncovered. Any change in face shape, hair or age fails the set.
Series: Biography Film Production — Step 2 of 3 — the expression set. See its place in the full workflow
Using this prompt with Seedream
Seedream (ByteDance's image line, current 5.0 generation) takes detailed natural-language prompts and is strong on rendered text in English and Chinese. Write the full descriptive version — subject, environment, camera, light, texture — and put any words the image must contain in quotes. Its editing mode works from multiple reference images: attach your keyframe set and name what each reference controls (face, wardrobe, location) so the consistency carries across the set.
What this route costs — and how to pay less
Cost structure: metered per image through ByteDance's API (BytePlus/Volcano) and aggregator hosts, or credit-based inside ByteDance's consumer apps (Dreamina, Doubao). The same prompt is pre-configured in this library for every major model, so you can run it on whichever route fits your budget — comparing the structures before you generate is a free way to save money.
Replace the bracketed placeholders — [PERSON DESCRIPTION], [WARDROBE], [BACKDROP COLOR] — with your own details before pasting.
Other versions and customization
See all model versions of this prompt, or open the prompt gateway to build a custom prompt from your own one-line goal, formatted for Seedream or any other model.
More Seedream prompts
Mpromp2 — the AI Prompt Generator. Every prompt in this library is free to use, including commercially.