seedinteger
Random seed for more reproducible results.
Minimum: 0
Maximum: 4294967295
Veo 3.1 Fast Image to Video
google/veo3.1/fast/image-to-videoVeo 3.1 Fast is Google's image-to-video AI model. Bring static images to life with fluid animation, consistent character motion, and professional-grade video output.
Try the model
Playground
Input
The text prompt describing the video you want to generate
PNG, JPEG, WebP, or GIF · 20 MiB maximum
First frame of the video. 720p or higher in 16:9 or 9:16 works best.
This field is required.
Additional Settings More
Customize your input with more control.
Duration of the generated video in seconds. Allowed values: 4, 6, 8.
Output resolution. Allowed values: 720p, 1080p, 4k.
Output aspect ratio. Omit to match the input image. Allowed values: 16:9, 9:16.
Generate synchronized audio. Videos without audio are cheaper.
What to avoid in the video.
Random seed for more reproducible results. Range: 0 to 4294967295.
ResultIdle
Your output will appear here
Complete the inputs, then click Run.
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
- Image to Video
- Rank
- #18 of 29
- Elo
- 938 ±19
- Gap to #1
- −192
Image-to-video arena (silent): people pick the better of two clips animated from the same image, without seeing the model names; audio is not judged.
- #13HappyHorse-1.01014±19
- #14Grok Imagine Video 1.5 Lite1003±19
- #15Kling 3.0 1080p (Pro)1000
- #16PixVerse V6966±19
- #17Veo 3.1955±19
- #18Veo 3.1 Fast938±19
- #19Vidu Q3 Turbo928±19
- #20Veo 3.1 Lite924±19
- #21LTX-2.5 Fast915±20
- #22Vidu Q3 Pro915±19
Veo 3.1 Fast Image to Video
Veo 3.1 Fast image-to-video, the faster, lower-cost Veo 3.1 tier. image becomes the first frame and the prompt directs motion, camera, and sound for a 4–8 second clip.
Fields
| Field | Type | Default | Notes |
|---|---|---|---|
prompt | string, required | — | Up to 20,000 characters. |
image | image URL, required | — | First frame. JPEG, PNG, or WebP URL. |
duration | 4 / 6 / 8 | 8 | Output length in seconds. |
resolution | 720p / 1080p / 4k | 720p | Sets the per-second rate. |
aspect_ratio | 16:9 / 9:16 | — | Output frame shape. |
generate_audio | boolean | true | Native dialogue, music, and effects; turning it off lowers the rate. |
negative_prompt | string | — | What to avoid. |
seed | integer 0–4294967295 | random | Fix it to compare prompt changes. |
Billing
You pay for output seconds, Google's list price. With audio: $0.10 at 720p, $0.12 at 1080p, $0.30 at 4k. Without audio: $0.08 / $0.10 / $0.25 respectively.
| Output | 720p | 1080p | 4k |
|---|---|---|---|
| 4s with audio | $0.40 | $0.48 | $1.20 |
| 6s with audio | $0.60 | $0.72 | $1.80 |
| 8s with audio (default) | $0.80 | $0.96 | $2.40 |
| 8s without audio | $0.64 | $0.80 | $2.00 |
Failed runs are not charged.
Prompting
- Describe what moves and what the audio should be, not what is already visible.
- Match
aspect_ratioto the input image.
Limits
- One input image; use first-last-frame-to-video to control the ending.
- Use Veo 3.1 for the highest quality.
Also on SandBase
Other Veo 3.1 Fast endpoints: google/veo3.1/fast/text-to-video, google/veo3.1/fast/first-last-frame-to-video, google/veo3.1/fast/reference-to-video, google/veo3.1/fast/video-extend, google/veo3.1/text-to-video, google/veo3.1/lite/text-to-video.
Start building
Send your first request
Submit this model through the SandBase Unified Run API.
# The quoted heredoc keeps Unicode and shell metacharacters unchanged.
result=$(curl --fail-with-body --silent \
-X POST "https://api.sandbase.ai/v1/run" \
-H "Authorization: Bearer $SANDBASE_API_KEY" \
-H "Content-Type: application/json" \
--data-binary @- <<'SANDBASE_JSON'
{
"model": "google/veo3.1/fast/image-to-video",
"prompt": "A monkey and polar bear host a casual podcast about AI inference, bringing their unique perspectives from different environments (tropical vs. arctic) to discuss how AI systems make decisions and process information.\nSample Dialogue:\nMonkey (Banana): \"Welcome back to Bananas & Ice! I am Banana\"\nPolar Bear (Ice): \"And I'm Ice!\"",
"duration": 8,
"resolution": "720p",
"generate_audio": true
}
SANDBASE_JSON
)
run_id=$(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
imagestringrequired
First frame of the video. 720p or higher in 16:9 or 9:16 works best.
promptstringrequired
The text prompt describing the video you want to generate
durationinteger
Duration of the generated video in seconds.
Default: 8
Possible values: 4, 6, 8
resolutionstring
Output resolution.
Default: "720p"
Possible values: "720p", "1080p", "4k"
aspect_ratiostring
Output aspect ratio. Omit to match the input image.
Possible values: "16:9", "9:16"
generate_audioboolean
Generate synchronized audio. Videos without audio are cheaper.
Default: true
negative_promptstring
What to avoid in the video.
{
"model": "google/veo3.1/fast/image-to-video",
"prompt": "A monkey and polar bear host a casual podcast about AI inference, bringing their unique perspectives from different environments (tropical vs. arctic) to discuss how AI systems make decisions and process information.\nSample Dialogue:\nMonkey (Banana): \"Welcome back to Bananas & Ice! I am Banana\"\nPolar Bear (Ice): \"And I'm Ice!\"",
"duration": 8,
"resolution": "720p",
"generate_audio": true
}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.