# Seedream 5.5 Seedream 5.5 is ByteDance's Seedream image model after Seedream 5.0. In Sloosh it makes 1K or 2K images from a prompt or from up to 10 reference images, writes better text in images, can return a transparent PNG with alpha, and keeps an image steady over many rounds of edits. Sloosh has Seedream 5.5 through ByteDance's early access program, so it is not on every platform yet. Web page: https://sloosh.ai/models/seedream-5.5 [Use Seedream 5.5](https://sloosh.ai/studio/image?image-model=seedream-5.5) ## Key facts in Sloosh | | | | --- | --- | | Made by | ByteDance | | Makes | image | | Inputs | text, up to 10 reference images | | Resolution | 1K or 2K (default 2K) | | Aspect ratios | 1:1, 4:3, 3:4, 16:9, 9:16, 3:2, 2:3, 21:9, 9:21, 4:5, 5:4 (default 1:1) | | Prompt limit | 5,000 characters | | Background | Auto, Opaque or Transparent (PNG with alpha) | | Cost | 0.525 credits per image, plus 0.120 credits for each reference image | | Where | Studio, Spacelab, and Claude or ChatGPT through MCP | ## What it is good for - AI image text rendering: posters, labels, menus and ads where the words have to read right. - Cut-outs and stickers: set Background to Transparent and get a PNG with alpha, ready to drop on a slide or a design. - Multi-reference image editing: combine up to 10 references, such as a product, a model and a setting, in one run. - Edits over several rounds: change one thing at a time and check each result. ## How to use Seedream 5.5 in Sloosh 1. Open [Image Studio with Seedream 5.5 selected](https://sloosh.ai/studio/image?image-model=seedream-5.5), or pick Seedream 5.5 in the model chip. 2. Add up to 10 reference images if you have them, and name each by number in the prompt ("Image 1 for the product"). 3. Set the aspect ratio, the resolution (1K or 2K) and the background. Pick Transparent for a PNG with alpha. 4. Check the cost on the Generate button, then generate. 5. To keep editing, use the result as a reference for the next round and change one thing per prompt. ## Seedream 5.5 prompts and tips - Put exact text in quotes and say where it goes: a headline at the top reading "FRESH ON SATURDAY". - For a transparent background, pick Transparent in Background and describe only the subject: "only the sticker, nothing behind it". - Name references by number and job, then say what must stay the same. - In a multi-round edit, ask for one change per round and list what to keep. **Prompt 1** ```text A bold poster for a summer farmers market. Big headline at the top in thick white letters: "FRESH ON SATURDAY". Below it, a smaller line: "Main Square, 8 am to 1 pm". A crate of ripe peaches and tomatoes fills the lower half, shot from slightly above in warm morning light. Deep green background, vertical 3:4 frame. ``` **Prompt 2 (Background: Transparent)** ```text A flat sticker of a smiling cartoon coffee cup with steam curling out of the top, thick dark outline, warm brown and cream colours. Only the sticker, nothing behind it, centred in a square frame. ``` **Prompt 3** ```text Image 1 is a ceramic mug. Image 2 is a wooden kitchen shelf. Put the mug from Image 1 in the middle of the shelf in Image 2, handle to the right, in soft morning light from a window on the left. Keep the mug's glaze, colour and logo exactly as in Image 1. ``` ## Seedream 5.5 vs Seedream 5.0 Pro | Model | Resolution | References | Prompt | Transparent background | | --- | --- | --- | --- | --- | | Seedream 5.5 | 1K, 2K | 10 | 5,000 | yes | | [Seedream 5 Pro](https://sloosh.ai/models/seedream-5-0-pro) | 1K, 2K | 10 | 5,000 | no | Both take the same references and prompt length in Sloosh. Seedream 5.5 adds a Transparent background and a tall 9:21 ratio. Seedream 5 Pro (Seedream 5.0 Pro) keeps its box-based region edits. See [every model in Sloosh](https://sloosh.ai/models). ## Seedream 5.5 pricing Seedream 5.5 costs 0.525 credits per image, plus 0.120 credits for each reference image, at 1K or 2K. One image with 3 reference images costs 0.525 + 3 x 0.120 = 0.885 credits. The Generate button shows the cost before you run it. ## Where you can use it - [Studio](https://sloosh.ai/studio/image?image-model=seedream-5.5): pick Seedream 5.5 in Image. - [Spacelab](https://sloosh.ai/docs/spacelab.md): pick it in an image node to build it into a workflow. - Claude and ChatGPT: connect [Sloosh MCP](https://sloosh.ai/docs/mcp.md) and ask for an image made with Seedream 5.5. There is no separate Seedream 5.5 API key to set up. Last checked 11 Nov 2026. ## Frequently asked questions ### What is Seedream 5.5? ByteDance's Seedream image model after Seedream 5.0. In Sloosh it makes 1K or 2K images from a prompt and up to 10 references, with better text and an optional transparent background. ### How many reference images does Seedream 5.5 take? Up to 10 per generation in Sloosh. Name them by number in the prompt. ### Can Seedream 5.5 make a transparent background? Yes. Set Background to Transparent and you get a PNG with alpha, with nothing behind the subject. ### How well does Seedream 5.5 write text in images? Text is one of the things Seedream 5.5 improves on. Put the exact words in quotes and say where they go. ### Can I edit the same image over several rounds? Yes. Seedream 5.5 is built for steady multi-round edits, but check each result; changing one thing per round works best. ### What does Seedream 5.5 cost? 0.525 credits per image, plus 0.120 credits for each reference image. One image with 3 reference images costs 0.525 + 3 x 0.120 = 0.885 credits. ### Where can I use Seedream 5.5? In Sloosh Studio, in Spacelab, and from Claude or ChatGPT through [Sloosh MCP](https://sloosh.ai/docs/mcp.md). ### What resolutions does Seedream 5.5 make? 1K or 2K, with 2K as the default. ### Is Seedream 5.5 available everywhere yet? No. Sloosh has Seedream 5.5 through ByteDance's early access program, so it is not on every platform yet. ## Related - Models: [Seedream 5 Pro](https://sloosh.ai/models/seedream-5-0-pro), [All models](https://sloosh.ai/models) - Docs: [Seedream 5.5](https://sloosh.ai/docs/seedream-5-5.md), [Sloosh MCP](https://sloosh.ai/docs/mcp.md) ## Sources - [Sloosh docs: Seedream 5.5](https://sloosh.ai/docs/seedream-5-5)