promptstringrequired
The text prompt used to generate the image.
Seedream 5.0 Pro Fast Text to Image
bytedance/seedream/5.0/pro/fastSeedream 5.0 Pro Fast text-to-image service provided through Kie.ai, with 1K and 2K quality tiers and flexible aspect ratios.
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Playground
Input
The text prompt used to generate the image.
Output quality tier: basic produces 1K images and high produces 2K images. Allowed values: basic, high.
The aspect ratio of the generated image. Allowed values: 1:1, 4:3, 3:4, 16:9, 9:16, 2:3, 3:2, 21:9.
ResultIdle
Your output will appear here
Complete the inputs, then click Run.
Bytedance Seedream 5.0 Pro Fast
Bytedance Seedream 5.0 Pro Fast is built for fast professional image generation with selectable quality for different production stages. It gives creative and production teams a focused way to move from an approved brief or source asset to a reviewable result without fragmenting the job across unrelated tools. The model is most valuable when visual intent, brand suitability, and downstream usability all matter, because its output can enter an editorial, campaign, product, or content pipeline as a purposeful asset rather than an isolated experiment.
In practice, teams can use Bytedance Seedream 5.0 Pro Fast during a structured cycle of briefing, generation, comparison, and refinement. Establish the subject, audience, visual objective, and acceptance criteria first; prepare any reference media at suitable quality; then evaluate alternatives for composition, continuity, realism, and communication value before delivery. This workflow keeps creative judgment central while making repeated production easier to review, reproduce, and scale for the specific bytedance/seedream/5.0/pro/fast task.
Highlights
Rapid professional rendering. Rapid professional rendering gives bytedance › seedream › 5.0 › pro › fast a recognizable technical advantage: reviewers can assess this property directly in the generated asset instead of inferring it from request mechanics.
Strong prompt adherence. bytedance › seedream › 5.0 › pro › fast applies strong prompt adherence to the visual or temporal result itself, helping artists make a meaningful quality decision during selection and refinement.
Typography-aware composition. For bytedance › seedream › 5.0 › pro › fast, typography-aware composition supports coherent assets across the intended creative workflow and distinguishes this capability from a simple format or delivery option.
Selectable standard or high quality. The practical value of selectable standard or high quality is visible in the finished media from bytedance › seedream › 5.0 › pro › fast, where it supports repeatable art direction rather than merely exposing another request setting.
Pricing
| Quality | Price |
|---|---|
| Basic | $0.045000 |
| High | $0.090000 |
When to Use
| ✅ Good fit | ❌ Consider alternatives |
|---|---|
| Use it when fast professional image generation with selectable quality for different production stages is the central production goal | Choose a different model when the required media task is fundamentally different |
| The team needs several reviewable creative alternatives | Exact deterministic reproduction is mandatory |
| Visual quality and practical downstream use both matter | Editable source layers or native project files are required |
| A managed generation step fits the delivery workflow | A live frame-by-frame interactive editor is essential |
| The documented inputs cover the available source assets | Required source media or controls fall outside the documented fields |
Prompt Guide
State the intended result first, then describe the subject, environment, action, visual treatment, and delivery constraints. Keep instructions concrete, avoid conflicting directions, and change one creative variable at a time when comparing outputs. For source-driven work, describe what should remain recognizable as clearly as what should change.
{
"prompt": "A cinematic product photograph with dramatic studio lighting",
"quality": "basic",
"aspect_ratio": "1:1"
}
Technical Specs
| Property | Details |
|---|---|
prompt | Type / options: string<br>Required: Yes<br>Description: The text prompt used to generate the image. |
quality | Type / options: string · basic / high<br>Required: Yes<br>Description: Output quality tier: basic produces 1K images and high produces 2K images. |
aspect_ratio | Type / options: string · 1:1 / 4:3 / 3:4 / 16:9 / 9:16 / 2:3 / 3:2 / 21:9<br>Required: Yes<br>Description: The aspect ratio of the generated image. |
Related Models
bytedance/dreamactor/2.0bytedance/lynxbytedance/omnihuman/1.0
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Submit this model through the SandBase Unified Run API.
# The quoted heredoc keeps Unicode and shell metacharacters unchanged.
result=$(curl --fail-with-body --silent \
-X POST "https://api.sandbase.ai/v1/run" \
-H "Authorization: Bearer $SANDBASE_API_KEY" \
-H "Content-Type: application/json" \
--data-binary @- <<'SANDBASE_JSON'
{
"model": "bytedance/seedream/5.0/pro/fast",
"prompt": "A cinematic product photograph with dramatic studio lighting",
"quality": "basic",
"aspect_ratio": "1:1"
}
SANDBASE_JSON
)
run_id=$(printf '%s' "$result" | jq -r .id)
for attempt in $(seq 1 120); do
status=$(printf '%s' "$result" | jq -r .status)
case "$status" in completed|failed|timeout) break ;; esac
sleep 2
result=$(curl --fail-with-body --silent \
-H "Authorization: Bearer $SANDBASE_API_KEY" \
"https://api.sandbase.ai/v1/run/$run_id")
done
status=$(printf '%s' "$result" | jq -r .status)
[ "$status" = completed ] || { echo "Generation ended: $status" >&2; exit 1; }
printf '%s\n' "$result"2. Authentication
Create a SandBase API key and set it in your server environment. All requests use Bearer authentication.
export SANDBASE_API_KEY="YOUR_API_KEY"Keep the key on your server. Do not expose it in browser code or commit it to a repository.
3. Queue
Submit a request
POST to /v1/run with this model ID and its inputs. The request example above includes submission and polling.
Fetch request status and result
Use the returned run ID to poll until the status is completed, failed or timeout. Read output only after completed.
curl "https://api.sandbase.ai/v1/run/$RUN_ID" \
-H "Authorization: Bearer $SANDBASE_API_KEY"4. Files
Hosted files
Pass a publicly accessible file URL in the model’s image, video or audio field. Supported formats and limits are shown beside each Playground input.
Uploading images
Use the upload or replace control on supported image fields in the Playground. Video URL fields accept a hosted driving video; they do not imply video-upload support.
5. Schema
Input
qualitystringrequired
Output quality tier: basic produces 1K images and high produces 2K images.
Default: "basic"
Possible values: "basic", "high"
aspect_ratiostringrequired
The aspect ratio of the generated image.
Default: "1:1"
Possible values: "1:1", "4:3", "3:4", "16:9", "9:16", "2:3", "3:2", "21:9"
{
"model": "bytedance/seedream/5.0/pro/fast",
"prompt": "A cinematic product photograph with dramatic studio lighting",
"quality": "basic",
"aspect_ratio": "1:1"
}Output
A completed run exposes its result in output. The following is the model’s saved example, not a new generation.
No example output has been published yet. Use Playground → Result → JSON after a completed run to inspect your response.