Veo 3.1 Fast (First+Last Frame)
Veo 3.1 Fast (First+Last Frame) costs $0.900/clip on FairStack — a first/last frame model for Fast video transitions, Keyframe interpolation. No subscription required. Pay per generation with full REST API access. FairStack applies a transparent 20% margin on infrastructure cost so you always see the real price.
What is Veo 3.1 Fast (First+Last Frame)?
Veo 3.1 Fast First+Last Frame is Google DeepMind's keyframe interpolation model that generates smooth video transitions between two specified images. Users provide starting and ending frames, and the model creates natural motion to bridge them, leveraging Google's Veo architecture for high-quality temporal interpolation with fast processing times. With per-second billing at $0.10 per second, this is the more affordable option in the first-and-last-frame category. The Fast variant prioritizes generation speed over maximum quality, making it suitable for iterative workflows where users need to preview multiple transition options quickly before committing to a final version. The Veo architecture provides reliable physics-aware motion generation. Compared to Kling V3 Standard FLF at $0.168 per second, Google's offering costs approximately 40% less while delivering competitive transition quality. The Fast designation means slightly lower visual fidelity than the standard Veo 3.1 FLF variant, but the speed advantage makes it practical for draft work and rapid prototyping. Best suited for fast video transitions, keyframe interpolation, and budget-friendly transition generation. Available on FairStack at infrastructure cost plus a 20% platform fee.
Key Features
What are Veo 3.1 Fast (First+Last Frame)'s strengths?
What are Veo 3.1 Fast (First+Last Frame)'s limitations?
What is Veo 3.1 Fast (First+Last Frame) best for?
How much does Veo 3.1 Fast (First+Last Frame) cost?
How does Veo 3.1 Fast (First+Last Frame) perform across capabilities?
Veo 3.1 Fast FLF — first-last-frame anchoring
How do I use the Veo 3.1 Fast (First+Last Frame) API?
curl -X POST https://api.fairstack.ai/v1/generations/video \
-H "Authorization: Bearer $FAIRSTACK_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "veo-3-1-fast-flf",
"prompt": "Your prompt here"
}'import requests
response = requests.post(
"https://api.fairstack.ai/v1/generations/video",
headers={
"Authorization": f"Bearer {FAIRSTACK_API_KEY}",
"Content-Type": "application/json",
},
json={
"model": "veo-3-1-fast-flf",
"prompt": "Your prompt here",
},
)
result = response.json()
print(result["url"])const response = await fetch(
"https://api.fairstack.ai/v1/generations/video",
{
method: "POST",
headers: {
Authorization: `Bearer ${process.env.FAIRSTACK_API_KEY}`,
"Content-Type": "application/json",
},
body: JSON.stringify({
model: "veo-3-1-fast-flf",
prompt: "Your prompt here",
}),
}
);
const result = await response.json();
console.log(result.url);What parameters does Veo 3.1 Fast (First+Last Frame) support?
Frequently Asked Questions
How much does Veo 3.1 Fast (First+Last Frame) cost?
Veo 3.1 Fast (First+Last Frame) costs $0.900/clip on FairStack as of 2026-05-13. This price includes FairStack's transparent 20% margin on infrastructure cost. No subscription or monthly fee — you pay per generation only. Minimum deposit is $1.
What is Veo 3.1 Fast (First+Last Frame) and what is it best for?
Veo 3.1 Fast First+Last Frame is Google DeepMind's keyframe interpolation model that generates smooth video transitions between two specified images. Users provide starting and ending frames, and the model creates natural motion to bridge them, leveraging Google's Veo architecture for high-quality temporal interpolation with fast processing times. With per-second billing at $0.10 per second, this is the more affordable option in the first-and-last-frame category. The Fast variant prioritizes generation speed over maximum quality, making it suitable for iterative workflows where users need to preview multiple transition options quickly before committing to a final version. The Veo architecture provides reliable physics-aware motion generation. Compared to Kling V3 Standard FLF at $0.168 per second, Google's offering costs approximately 40% less while delivering competitive transition quality. The Fast designation means slightly lower visual fidelity than the standard Veo 3.1 FLF variant, but the speed advantage makes it practical for draft work and rapid prototyping. Best suited for fast video transitions, keyframe interpolation, and budget-friendly transition generation. Available on FairStack at infrastructure cost plus a 20% platform fee. Veo 3.1 Fast (First+Last Frame) is best for Fast video transitions, Keyframe interpolation. Available via FairStack's REST API with curl, Python, and Node.js SDKs.
Does Veo 3.1 Fast (First+Last Frame) have an API?
Yes. Veo 3.1 Fast (First+Last Frame) is available via FairStack's REST API at api.fairstack.ai. Send a POST request to /v1/generations/video with your API key and prompt. Works with curl, Python requests, Node.js fetch, and any HTTP client. No SDK installation required.
How does Veo 3.1 Fast (First+Last Frame) compare to other video models?
Veo 3.1 Fast (First+Last Frame) excels at Fast video transitions, Keyframe interpolation. It is a first/last frame model priced at $0.900/clip on FairStack. Key strengths: Fast processing, Good transition quality. Compare all video models at fairstack.ai/models.
What makes Veo 3.1 Fast (First+Last Frame) stand out from other video models?
Veo 3.1 Fast (First+Last Frame) is distinguished by fast processing and good transition quality. Generation typically completes in 5-15 seconds.
What are the known limitations of Veo 3.1 Fast (First+Last Frame)?
The main limitation to be aware of is: per-second at $0.10/s. FairStack documents these transparently so you can choose the right model for your workflow.
How fast is Veo 3.1 Fast (First+Last Frame)?
Veo 3.1 Fast (First+Last Frame) typically completes in 5-15 seconds. This provides a good balance between output quality and processing speed for most production workflows.
What video capabilities does Veo 3.1 Fast (First+Last Frame) offer?
Veo 3.1 Fast (First+Last Frame) offers: google veo transitions; fast processing; first+last frame control. All capabilities are accessible through both the FairStack web interface and REST API.
Start using Veo 3.1 Fast (First+Last Frame) today
$0.900/clip. Full API access. No subscription.
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