seedinteger
Random seed for reproducibility. If None, a random seed is chosen.
Vidu Q3 Text to Video
vidu/q3/text-to-videoVidu Q3 is Shengshu's text-to-video AI model. Turn written scripts and prompts into professional-quality video clips with realistic motion, lighting, and scene composition.
Try the model
Playground
Input
Text prompt for video generation, max 2000 characters
Additional Settings More
Customize your input with more control.
The aspect ratio of the generated image. Allowed values: 16:9, 9:16, 4:3, 3:4, 1:1.
Whether to use direct audio-video generation. When true, outputs video with sound.
Output video resolution Allowed values: 360p, 540p, 720p, 1080p.
116
Duration of the video in seconds Range: 1 to 16.
Random seed for reproducibility. If None, a random seed is chosen.
ResultExample
What would you like to do next?
Examples
Select an example to load its inputs and result into the playground.
- Open result ↗
Input
{ "prompt": "In an ultra-realistic fashion photography style featuring light blue and pale amber tones, an astronaut in a spacesuit walks through the fog." }
Human preference
Arena
Elo ratings from blind side-by-side votes, compared with other image and video models.
Rankings sourced from Artificial Analysis Arena
- Leaderboard
- Text to Video
- Rank
- #26 of 33
- Elo
- 900 ±17
- Gap to #1
- −243
Text-to-video arena (silent): people pick the better of two clips from the same prompt, without seeing the model names; audio is not judged.
- #21Veo 3.1 Fast959±17
- #22Veo 3.1 Lite941±17
- #23LTX-2.5 Fast929±17
- #24LTX-2.5 Pro928±17
- #25Runway Gen-4.5 (720p)909±18
- #26Vidu Q3 Pro900±17
- #27Vidu Q3 Turbo900±17
- #28Kling O1 Pro (January)887±18
- #29LTX-2.3 Fast844±18
- #30LTX-2.3 Pro836±18
Vidu Q3 Text to Video
Vidu Q3 turns a prompt into a 1–16 second clip with native audio.
Fields
| Field | Type | Default | Notes |
|---|---|---|---|
prompt | string, required | — | Up to 2,000 characters. |
aspect_ratio | 16:9 / 9:16 / 4:3 / 3:4 / 1:1 | 16:9 | Output frame shape. |
audio | boolean | true | Generate native audio. Same price on or off. |
resolution | 360p / 540p / 720p / 1080p | 720p | Sets the per-second rate. |
duration | integer 1–16 | 5 | Output length in seconds. |
seed | integer | random | Fix it to compare prompt changes. |
Billing
You pay for output seconds: $0.07 at 360p or 540p, $0.154 at 720p, $0.16 at 1080p.
| Output | 540p | 720p | 1080p |
|---|---|---|---|
| 4s | $0.28 | $0.616 | $0.64 |
| 5s (default) | $0.35 | $0.77 | $0.80 |
| 8s | $0.56 | $1.232 | $1.28 |
| 16s | $1.12 | $2.464 | $2.56 |
Failed runs are not charged.
Prompting
- Describe subject, action, camera, and sound.
Also on SandBase
Other Vidu Q3 endpoints: vidu/q3/image-to-video, vidu/q3/reference-to-video/mix, vidu/q3/text-to-video/turbo, vidu/q3/image-to-video/turbo.
Start building
Send your first request
Submit this model through the SandBase Unified Run API.
# The quoted heredoc keeps Unicode and shell metacharacters unchanged.
result=$(curl --fail-with-body --silent \
-X POST "https://api.sandbase.ai/v1/run" \
-H "Authorization: Bearer $SANDBASE_API_KEY" \
-H "Content-Type: application/json" \
--data-binary @- <<'SANDBASE_JSON'
{
"model": "vidu/q3/text-to-video",
"audio": true,
"prompt": "In an ultra-realistic fashion photography style featuring light blue and pale amber tones, an astronaut in a spacesuit walks through the fog.",
"duration": 5,
"resolution": "720p",
"aspect_ratio": "16:9"
}
SANDBASE_JSON
)
run_id=$(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
audioboolean
Whether to use direct audio-video generation. When true, outputs video with sound.
Default: true
promptstringrequired
Text prompt for video generation, max 2000 characters
durationinteger
Duration of the video in seconds
Default: 5
Minimum: 1
Maximum: 16
resolutionstring
Output video resolution
Default: "720p"
Possible values: "360p", "540p", "720p", "1080p"
aspect_ratiostring
The aspect ratio of the generated image.
Default: "16:9"
Possible values: "16:9", "9:16", "4:3", "3:4", "1:1"
{
"model": "vidu/q3/text-to-video",
"audio": true,
"prompt": "In an ultra-realistic fashion photography style featuring light blue and pale amber tones, an astronaut in a spacesuit walks through the fog.",
"duration": 5,
"resolution": "720p",
"aspect_ratio": "16:9"
}Output
A completed run exposes its result in output. The following is the model’s saved example, not a new generation.
[
{
"poster": "https://static.sandbase.ai/examples/posters/126b06eb53b95d55a992.jpg",
"source": "Vidu schema mirror",
"source_url": "https://www.vidu.com/",
"url": "https://static.sandbase.ai/examples/386ce038-1658-44f9-8f9c-10e986971b06/output/a1ffa83f-27d5-444b-885c-0661f3ad1ba8.mp4"
}
]