ByteDance: Seedream 5.0 Flash

Seedream 5.0 Flash covers prompt-based image creation and changes to an input picture. It is a candidate for short creative feedback loops, such as testing several visual ideas or revising a draft during a design session.

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seedream-5.0-flash

AvailableByteDanceImageSync / Async

Price: From $0.018
Modalities: Image

About Seedream 5.0 Flash

Seedream 5.0 Flash is the short-feedback-loop variant of ByteDance Seed's Seedream 5.0 image models. It covers prompt-based image creation and changes to an input picture, and suits image editing. It fits sessions where many visual ideas are tried or a draft is revised live, ahead of using Seedream 5.0 Pro for finished information graphics.

Where it works well

Text-to-image and image editing in one ID for rapid back and forth.
Built around image editing as well as generation, so a draft can be revised several times in a row.
Part of the Seedream 5.0 line, which ByteDance describes as interpreting the intent of an instruction.
A good first stop for comparing ten phrasings of one idea before spending effort on a polished render.

When to choose another model

Dense infographics and layered precision edits are what Seedream 5.0 Pro is designed for.
It does not claim the reasoning and online search that ByteDance describes for Seedream 5.0 Lite.

Getting started

Create API key
Create a key in Console, then use it with every model on the platform.

Send your first request

Copy the example for your language and run it against the endpoint.

Image to imageText to imageTokenLab endpoint

POST/v1/images/generations

curl -X POST "https://api.tokenlab.sh/v1/images/generations" \
  -H "Authorization: Bearer sk-xxx" \
  -H "Content-Type: application/json" \
  -d '{
  "operation": "text-to-image",
  "model": "seedream-5.0-flash",
  "prompt": "A minimalist product photo of matte black headphones on a soft blue background."
}'

Parameters

Image to image

Parameter	Values and limits	Default	Notes
`async`	Not provided	Not provided	Not provided
`image`	Inputs: ≥ 1, ≤ 1	Not provided	Use at least one source image and at most 1 in total across all source-image representations.
`image_url`	Inputs: ≥ 1, ≤ 1	Not provided	Not provided
`operation`	Not provided	Not provided	Not provided
`prompt`	Not provided	Not provided	Not provided
`response_format`	Not provided	Not provided	The public image response selector accepts url or b64_json. A URL-only supply rejects b64_json before upstream execution. Omit this field to keep the selected supply response representation; no uniform omitted-field default is declared here.

Output is fixed at 2K and one image per request.

Resolution, quality and aspect_ratio are not declared as configurable public parameters.

Text to image

Parameter	Values and limits	Default	Notes
`async`	Not provided	Not provided	Not provided
`image`	Not provided	Not provided	Text-to-image does not accept source images. Do not send this field for that operation. Use one of this model's declared image operations for source-image requests.
`image_url`	Not provided	Not provided	Text-to-image does not accept source images. Do not send this field for that operation. Use one of this model's declared image operations for source-image requests.
`operation`	Not provided	Not provided	Not provided
`prompt`	Not provided	Not provided	Not provided
`response_format`	Not provided	Not provided	The public image response selector accepts url or b64_json. A URL-only supply rejects b64_json before upstream execution. Omit this field to keep the selected supply response representation; no uniform omitted-field default is declared here.

Output is fixed at 2K and one image per request.

Resolution, quality and aspect_ratio are not declared as configurable public parameters.

Generates one image or edits one reference image per request, with 2K output. Group generation and layer decomposition are not part of this public contract.

Pricing

The Verified price applies to Verified, which costs less on most models. The Official price is the model maker's published price and applies to the more reliable Official route. Auto bills the route that completes the request.

Pricing

per image

Verified price: —
Official price: $0.018per image

	Official priceper image	Verified priceper image	Discount
Price	$0.018per image	—	—

Usage & activity

Success rate is the share of requests that completed. Latency is how long a full response takes; P95 means 95% of requests finished within that time.

Usage & availability

Last 24 hours

Requests
Success rate
P95 latency
Total tokens

Model performance

Last updated Nov 13, 2026, 4:51 AM UTC

Metrics appear once privacy and data volume thresholds are met.

Data is based on aggregate user requests, excluding status checks.

Open in Console

Open Seedream 5.0 Flash in Console with a prompt ready to edit or send.

Help me create an image with seedream-5.0-flash using text-to-image at /v1/images/generations. Show the result, cost, and any limits I should know.

Use cases

Best for

Text to Image

Live design sessions
Change a draft during a meeting, such as a different background or color, and show the result straight away.
Idea fan-out
Generate many takes on a theme to find the direction worth refining.
Quick retouch requests
Ask for small changes to a photo, like removing clutter or adjusting the mood, and iterate.

Prompt examples

Same image, but make it golden hour and remove the cars from the background.

Five different logos-in-context for a bakery called Rye & Co, flat illustration style.

Turn this sketch of a living room into a photographic render with oak floors.

FAQ

What is Seedream 5.0 Flash?

A variant in the Seedream 5.0 family for quick creative loops. It takes text prompts and input images, producing new images or edited versions of the supplied one.

Is Flash for editing or creating?

Both. It offers text-to-image and image-to-image, so it creates new images from a prompt and also applies changes to a picture you supply, which suits drafts revised in several rounds.

When should I choose Flash over Pro?

Choose Flash to iterate cheaply on ideas and small revisions. Pick Seedream 5.0 Pro when the output has to explain something, such as a diagram or infographic, or when edits need precise selection.

How does Flash compare with 5.0 Lite?

ByteDance documents Lite as reasoning- and search-enabled. Flash is the speed-focused option, so test it against Lite on prompts that need reasoning before choosing between them.

Can I upload a reference picture?

Yes, image-to-image is available. Upload the picture and describe the change you want, and state what must stay the same so each revision builds on the last.

How much does Seedream 5.0 Flash cost?

On TokenLab, Seedream 5.0 Flash costs $0.018 per image. The pricing table above shows the full breakdown.

Which endpoint should Seedream 5.0 Flash use?

Use https://api.tokenlab.sh/v1/images/generations for Seedream 5.0 Flash. The request example below shows the matching code shape.

Which operations does Seedream 5.0 Flash support?

Seedream 5.0 Flash supports Image to image, Text to image. Select an operation above to see its endpoint and request example.