How do I get Seedream 5.0 Pro API access?

Sign up on Emix.ai and copy your API key from the dashboard — access is live, no waitlist. New accounts get free credits and can hit the endpoint in the same session.

How much does the Seedream 5.0 Pro API cost?

Emix.ai prices the Seedream 5.0 Pro API per output image with two tiers (`1K` and `2K`), plus a small per-input-image charge for references (first input free). See the pricing card on this page for the exact credit rates, or `docs.emix.ai` for the full billing reference.

How do I use the Seedream 5.0 Pro API?

`POST` to `https://api.emix.ai/api/v1/jobs/createTask` with your bearer key and a body containing `model` (pick text-to-image or image-to-image), and an `input` object with `prompt`, optional `image_urls`, `aspect_ratio`, `quality` (`1K` or `2K`) and `nsfw_checker`. The call returns a job ID; poll the job-status endpoint per `docs.emix.ai` to fetch the finished image URL.

What parameters does the Seedream 5.0 Pro API support?

`prompt` (required), `image_urls` (references or source image; first input free), `aspect_ratio` (`1:1`, `3:2`, `2:3`, `16:9`, `9:16`, `21:9`), `quality` (`1K` or `2K`), `nsfw_checker` (bool), plus `num_images`, `safety_level` and `output_format`. Mode is selected by the `model` field itself.

How does the Seedream 5.0 Pro API compare to Seedream 5.0 Lite?

Both tiers share the same Emix.ai endpoint, auth and billing — you switch by changing the `model` string. Pro delivers stronger reference blending and higher fine-detail fidelity at a higher per-image credit cost; Lite is cheaper per image and better suited to volume workloads. Route by output value, not by integration.

Does the Seedream 5.0 Pro API support in-image text editing?

Yes — call the `bytedance/seedream-5-pro-image-to-image` model with a source image in `image_urls` and a prompt describing the change. The API can rewrite text baked into the supplied image while preserving surrounding composition, which is what makes it usable for iterative mockups and localized creative.

Can I use the Seedream 5.0 Pro API for commercial and client work?

Yes. The Pro tier is positioned for production and commercial workflows, with a configurable `nsfw_checker` / `safety_level`, per-image billing and reproducible job records. Verify licensing specifics on the Emix.ai model page and `docs.emix.ai`.

Where can I test the Seedream 5.0 Pro API for free?

Use the in-browser Playground on the Seedream 5.0 Pro page at emix.ai/seedream-5-0-pro — you can generate test images before wiring up the API, and free credits from a new account cover your first real API calls.

README.md

Seedream 5.0 Pro API on Emix.ai: Cinematic 4K Image Generation, One Endpoint

Q: What is the Seedream 5.0 Pro API?

The Seedream 5.0 Pro API is the developer endpoint for Seedream 5.0 Pro — ByteDance's high-fidelity image generation and editing model. On Emix.ai, you call it via `POST https://api.emix.ai/api/v1/jobs/createTask` with a `model` field of `bytedance/seedream-5-pro-text-to-image` or `bytedance/seedream-5-pro-image-to-image`, and outputs are billed per image at either the `1K` or `2K` tier.

Q: Are there free credits for the Seedream 5.0 Pro API?

Yes. New Emix.ai accounts receive free credits usable across the catalog, including Seedream 5.0 Pro API calls — enough to prototype an end-to-end integration before committing budget.

The Seedream 5.0 Pro API on Emix.ai is a high-fidelity image generation and editing endpoint from ByteDance, built for cinematic composition, reference-guided styling and precise in-image editing. Call it with a single async HTTP request via api.emix.ai/api/v1/jobs/createTask, switch between text-to-image and image-to-image with one model string, and layer edits without losing subject consistency. Available now on Emix.ai — new accounts get free credits to prototype end-to-end. Ship photoreal ads, editorial illustrations, product mocks and layered scene edits without stitching together three different models. The Seedream 5.0 Pro API on Emix.ai gives your app one endpoint for text-to-image, image-to-image and reference-blending workflows — with a parameter surface designed for developers, not prompt tinkerers.

Explore the Seedream 5.0 Pro API Start free with Emix.ai credits

Key Capabilities of the Seedream 5.0 Pro API on Emix.ai

Seedream 5.0 Pro is the high-end tier of the Seedream 5.0 series, and the API surface on Emix.ai reflects that: fewer knobs, more headroom, defaults tuned for commercial output. Below are the four capabilities you can call today.

High-fidelity cinematic image generation

The Seedream 5.0 Pro API is built around cinematic composition — depth, lighting continuity, subject-aware framing and film-grade color. Emix.ai bills two output tiers, 1K and 2K, selectable via the quality parameter, so you can route drafts and hero frames through the same endpoint without changing models. Skin, fabric and reflective surfaces hold up under editorial retouching instead of collapsing at zoom.

Reference-guided generation and style blending

Pass one or more reference images via image_urls alongside your prompt and Seedream 5.0 Pro blends them into a coherent output. This is the capability that makes the API viable for brand work: lock a subject, a palette or a lighting reference, then generate variations that stay on-brand. The first input image on each call is free, so reference-heavy pipelines stay cheap.

Precise editing, including in-image text edits

Switch the model ID to bytedance/seedream-5-pro-image-to-image, pass a source image via image_urls, and drive targeted changes with a natural-language prompt — swap a background, change a garment, adjust lighting, or rewrite text baked into the image itself. Subjects, products and typography hold across successive edits, which is what makes it usable for iterative creative pipelines rather than one-shot generation.

One endpoint, both modes, both tiers

Text-to-image and image-to-image live on the same async job endpoint (POST /api/v1/jobs/createTask) under the same auth and billing — you switch modes by changing the model string, and switch quality by flipping quality between 1K and 2K. Route heavy briefs to 2K, batch thumbnails through 1K, share credits across both, and share billing with every other model in the Emix.ai catalog.

What Can You Build with the Seedream 5.0 Pro API

The API is capability-general, but a few use cases map cleanly to what Seedream 5.0 Pro is tuned for. Each is a real product surface you can ship on top of the Emix.ai endpoint today.

Cinematic ad creative for performance marketing

Generate on-brand hero images with reference-locked product placement, then batch out aspect-ratio variants for Meta, TikTok and DOOH from the same seed and reference set. The Seedream 5.0 Pro API is designed for the "one brief, twenty deliverables" problem.

Editorial and publishing illustration

Long-form publishers can call the Seedream 5.0 Pro API to illustrate articles with a consistent house style — pass a style reference once, then generate scene after scene without drifting into stock-photo aesthetic.

E-commerce product photography and background swap

Ship a product-photo pipeline: upload a raw product shot, prompt "on a marble surface, studio softbox, top-down," and let image-to-image mode keep the product pixel-accurate while swapping the environment. Use reference blending to enforce catalog lighting rules.

Game and film pre-visualization

The cinematic bias makes the Seedream 5.0 Pro API a strong fit for previs — key-frame concepts, style frames, character sheets — where you need one visual language across dozens of shots.

AI-native design tools and Figma-style plugins

Wrap the Seedream 5.0 Pro API behind a "generate variant" button. The image-to-image mode with in-image text editing means end users can say what they want in plain language — including rewriting copy directly inside a mockup — and get a targeted change, not a full regeneration.

Localized marketing at scale

Combine reference locking with in-image text editing to produce region-specific creative from a single brief — same product, same brand palette, different setting, wardrobe or on-image copy — via one API call per locale.

Seedream 5.0 Pro API Parameters & Performance

Below is the confirmed parameter surface for the Seedream 5.0 Pro API on Emix.ai, as accepted by the live endpoint. Modes: text-to-image and image-to-image on the same async endpoint, selected by the model field. Reference blending: multiple images accepted via image_urls; first input image billed at zero credits. Editing: semantic consistency across edits — subjects, products, palettes and on-image text hold across successive calls. Determinism: the job response returns the parameters used, so re-runs are reproducible. Endpoint shape: POST https://api.emix.ai/api/v1/jobs/createTask with Authorization: Bearer <EMIX_API_KEY> and Content-Type: application/json. The endpoint is asynchronous: createTask returns a job ID, and you poll the job-status endpoint (see docs.emix.ai) for the finished image URL and metadata.

Parameter	Type	Range / default	Notes
model	string	bytedance/seedream-5-pro-text-to-image \| bytedance/seedream-5-pro-image-to-image	Selects mode.
prompt	string	required	Natural-language brief. Supports long, structured prompts.
image_urls	array of URLs	optional (T2I) / required (I2I)	Reference images for blending, or the source image for editing. First input image is free.
aspect_ratio	string	1:1, 3:2, 2:3, 16:9, 9:16, 21:9	Cinematic ratios supported.
quality	enum	1K \| 2K	Output resolution / billing tier; rates on the pricing card.
nsfw_checker	bool	default true	Toggle safety filter.
num_images	int	batch per request	Multiple outputs per job.
safety_level	enum	configurable	For commercial workflows.
output_format	enum	png \| jpg \| webp	png default.

Seedream 5.0 Pro API vs the Previous-Generation API

There's no direct "Seedream 4.5 Pro API" predecessor, so the honest comparison is against the broader Seedream 4.0-era API and the sibling Seedream 5.0 Lite tier. Migration cost: because every Seedream tier shares the Emix.ai job API, moving a workload from an older endpoint or from Lite to Pro is a model string change, not a rewrite.

	Seedream 5.0 Pro API	Seedream 4.0-era APIs	Seedream 5.0 Lite
Endpoint architecture	Unified async job endpoint for T2I, reference blending and layered editing	Separate models with separate integrations	Same Emix.ai endpoint as Pro
In-image text editing	First-class capability on the image-to-image variant — rewrite copy without regenerating the frame	Not first-class	Supported on shared endpoint
Output tiers	Two priced tiers (1K and 2K) via a single `quality` flag	Not tiered via a single flag	Same tier flag, lower per-image cost
Reference blending & fine-detail fidelity	Tuned for headroom — stronger reference blending and higher fine-detail fidelity	Earlier-generation fidelity	Lower fidelity, cheaper per image
Auth & billing	Shared Emix.ai auth and billing across the Seedream series	Separate integrations	Shared with Pro — switch by `model` string
Best for	Output going into a paid campaign	Legacy workloads	Volume workloads
Migration cost	`model` string change, not a rewrite	Requires re-integration	`model` string change

Why Choose Emix.ai for the Seedream 5.0 Pro API

Available now, with quota provisioned automatically

The Seedream 5.0 Pro API is live on Emix.ai today. New accounts get keys immediately and can hit the endpoint in the same session — no waitlist.

One API for the entire Seedream series

Call Seedream 5.0 Pro and Seedream 5.0 Lite from the same base URL, the same key, the same billing. Route by cost, latency or quality without maintaining two integrations.

Free credits for developers

New Emix.ai accounts get free credits usable across the model catalog, including Seedream 5.0 Pro API calls. Enough to prototype an integration end-to-end before you commit budget.

Transparent per-image pricing

Emix.ai prices the Seedream 5.0 Pro API per output image with two clear quality tiers, plus a per-input-image charge for references (first input free). No minimums, no seat fees, no annual commit. See the pricing card on this page for exact rates, or docs.emix.ai for the full billing reference.

Developer support that actually answers

Direct Slack/Discord channel to the Emix.ai engineering team, docs with runnable examples, and a public status page. If the Seedream 5.0 Pro API is misbehaving, you talk to someone who can page the vendor.

A continuously-updated model library

The Seedream 5.0 Pro API lives next to dozens of other current models on Emix.ai. When something newer ships, you swap the model string — your integration doesn't move.

Seedream 5.0 Pro API Quick Start

Four steps from zero to a rendered image.

Try it in the Playground

Open the Seedream 5.0 Pro entry on Emix.ai and generate a test image in-browser — no code, no key. Confirm the output tier and reference-blending behavior you want before wiring anything up.

Get an Emix.ai API key

Create an Emix.ai account and copy your key from the dashboard. New accounts get free credits usable against the Seedream 5.0 Pro API immediately.

Send your first request

POST to https://api.emix.ai/api/v1/jobs/createTask with your key, the model ID for the mode you want, and a prompt:bash

curl -X POST https://api.emix.ai/api/v1/jobs/createTask \
  -H "Authorization: Bearer $EMIX_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "bytedance/seedream-5-pro-text-to-image",
    "input": {
      "prompt": "cinematic wide shot, product on marble, softbox lighting, 35mm",
      "image_urls": ["https://example.com/brand-ref.jpg"],
      "aspect_ratio": "16:9",
      "quality": "2K",
      "nsfw_checker": true
    }
  }'

Poll the job and iterate

createTask returns a job ID; poll the job-status endpoint documented at docs.emix.ai to fetch the image URL. To edit an existing image, switch model to bytedance/seedream-5-pro-image-to-image and pass the source image in image_urls — including for in-image text edits.