Iterate at 1K, finish at 2K
Because both sizes cost the same, there is no saving in staying at 1K for the final. Use 1K only when you want faster review.
3CREDITS
Remaining credits：
Public
BestAIVideo
Draft and Edit Images Fast with Seedream 5.0 Flash
Seedream 5.0 Flash is the speed-and-cost tier of ByteDance's Seedream 5.0 family. Every image costs 3 credits whether you choose 1K or 2K, so you can try many ideas, add up to 10 reference images to edit, and settle on a layout before you spend credits on anything larger.
Why Teams Reach for Seedream 5.0 Flash
Flash is built for volume work: banners, thumbnails, product variants and quick concept passes. The generator keeps the controls short so you can iterate quickly.
A flat price per image
1K and 2K both cost 3 credits, and the price does not rise with the number of reference images. That makes 2K the sensible default once a prompt is working.
Text-to-image and multi-reference edits
Write a prompt for a new image, or add 1 to 10 reference images in edit mode and describe what to take from each one.
Eight ratios, chosen up front
Pick 1:1, 4:3, 3:4, 16:9, 9:16, 2:3, 3:2 or 21:9. There is no auto option, so the ratio is a deliberate part of every brief.
Prompts up to 5,000 characters
Enough room for a full layout description, a list of on-image text and notes on what should stay fixed in an edit.
Briefing Seedream 5.0 Flash Efficiently
ByteDance's guidance for Seedream is to write coherent natural language rather than a loose keyword list, and Flash rewards the same clarity. Because runs are cheap, structure matters more than polish.
State the purpose
Begin with what the image is for, such as a website hero with space for copy, a tea poster or a product tile. The use case tells the model how to compose the frame.
Describe subject, setting and style together
Give the subject and action in their environment, then the palette, lighting and composition. One flowing paragraph usually beats a bullet list.
Say what each reference contributes
For edits, name the subject, material, layout or style that should come from each image, and separate the change you want from the elements to preserve.
Quote the text you need
Put required on-image words in double quotation marks and keep headlines short. Check small print closely, since long text is where errors collect.
Three Seedream 5.0 Looks to Aim For with Flash
A panning shot of a cyclist in a busy street
The rider and bike stay sharp while shopfronts, a delivery truck and a scooter streak behind them. To get this look, ask for a panning shutter effect and name what should be blurred and what should stay crisp.
An infographic on the six types of tea
A flavour wheel, oxidation bars, brewing temperatures and watercolour leaf swatches share one parchment layout. It is a good target for Flash when a layout has a title, labels and numbers.
A pet store homepage with product cards
A golden retriever greets the viewer beside three product tiles, a headline and a Shop Now button. It is the kind of interface-style image that web and campaign teams can mock up in minutes.
Seedream 5.0 Flash Production Notes
Plan the empty space
Banners and heroes need room for copy. State which third of the frame stays quiet so the composition leaves it free.
Name the edit and the fence
Write one sentence for what changes and one for what stays, and keep them separate. Mixed instructions are the most common reason an edit drifts.
Where Seedream 5.0 Flash Fits
High-volume social graphics
Produce a week of variants for 3 credits each and keep only the ones that earn a closer look.
Thumbnails and banners
Use 16:9, 9:16 or 21:9 presets and keep the subject off the areas a platform covers with buttons.
Product and merchandise edits
Combine up to 10 pack and angle shots in edit mode, then re-stage them in a new setting.
Interface and landing page mockups
Rough out a homepage or app screen with real-looking copy before a designer builds the final file.
Explainer graphics
Make infographics and teaching charts where a single page has to carry a title, labels and a legend.
Stepwise editing
Change one thing at a time, for example the background and then the lighting, and keep each step cheap.
Seedream 5.0 Flash Questions, Answered
Seedream 5.0 Flash is ByteDance's fast, lower-cost image model in the Seedream 5.0 family. It covers text-to-image, single-image edits and multi-reference edits.
3 credits per image at both 1K and 2K. Text generation and editing cost the same, and the generator shows the figure before you submit.
On this site Seedream 5.0 Lite costs 5 credits, and Seedream 5.0 Pro costs 6 at 1K and 12 at 2K. Flash is the cheapest of the three.
Between 1 and 10 in edit mode. Edit mode requires at least one image.
1:1, 4:3, 3:4, 16:9, 9:16, 2:3, 3:2 and 21:9, with 1:1 preselected. Size is 1K or 2K, and 1K is the default.
No. The ratio is always set explicitly, including when you edit images, so choose it before you generate.
Up to 5,000 characters, which leaves room for detailed layouts and several text elements.
Use Flash for drafts, volume and layout-heavy images, and try Pro when realistic portraits or fine material detail matter most.
Wrap the words in double quotation marks and describe where they go. Keep each text element short and read the result closely.
PNG, JPG, WebP, GIF, BMP and TIFF are accepted, and each file can be up to 30 MB.
Try Seedream 5.0 Flash on Your Next Brief
Pick a ratio, write the brief, add references if you need them and check the cost before you submit.