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Video Image to Video fal.ai

Veo 3.1 Fast I2V

Veo 3.1 Fast I2V costs $0.900/clip on FairStack — a image to video model for Rapid ad iteration, Social video, Cost-conscious premium work. 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.

FairStack price
$0.900/clip

What is Veo 3.1 Fast I2V?

Veo 3.1 Fast Image-to-Video delivers the Veo 3.1 architecture optimized for speed and cost. It animates a still image with native audio at $0.15/s (with audio) or $0.10/s (no audio) for 720p/1080p, in 4/6/8s durations. The best value entry point into the Veo line for fast iteration on ad creative.

Key Features

Native audio
Fast turnaround
Veo quality at lower cost

What are Veo 3.1 Fast I2V's strengths?

Strong fidelity for the price
Native audio
Fast iteration

What are Veo 3.1 Fast I2V's limitations?

Slightly below full Veo 3.1
Max 8s
16:9/9:16 only

What is Veo 3.1 Fast I2V best for?

Rapid ad iteration Social video Cost-conscious premium work

How much does Veo 3.1 Fast I2V cost?

Metric
FairStack
Details
Price per generation
$0.900
Includes 20% margin
Per-second rate
$0.1500/sec
Billed per second of output
Subscription
None
Pay per generation only

How does Veo 3.1 Fast I2V perform across capabilities?

Veo 3.1 fast i2v

motion quality
88%
visual quality
90%
prompt adherence
86%
temporal coherence
88%
audio quality
86%
camera control
82%

How do I use the Veo 3.1 Fast I2V API?

curl
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-i2v",
    "prompt": "Your prompt here"
  }'
Python
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-i2v",
        "prompt": "Your prompt here",
    },
)

result = response.json()
print(result["url"])
Node.js
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-i2v",
      prompt: "Your prompt here",
    }),
  }
);

const result = await response.json();
console.log(result.url);

What parameters does Veo 3.1 Fast I2V support?

Parameter
Type
Default
Details
aspect_ratio
enum
16:9
Options: 16:9, 9:16
duration
enum
8s
Options: 4s, 6s, 8s
resolution
enum
720p
Options: 720p, 1080p
generate_audio
boolean
true
negative_prompt
string (optional)
seed
integer (optional)

Frequently Asked Questions

How much does Veo 3.1 Fast I2V cost?

Veo 3.1 Fast I2V costs $0.900/clip on FairStack as of 2026-06-27. 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 I2V and what is it best for?

Veo 3.1 Fast Image-to-Video delivers the Veo 3.1 architecture optimized for speed and cost. It animates a still image with native audio at $0.15/s (with audio) or $0.10/s (no audio) for 720p/1080p, in 4/6/8s durations. The best value entry point into the Veo line for fast iteration on ad creative. Veo 3.1 Fast I2V is best for Rapid ad iteration, Social video, Cost-conscious premium work. Available via FairStack's REST API with curl, Python, and Node.js SDKs.

Does Veo 3.1 Fast I2V have an API?

Yes. Veo 3.1 Fast I2V 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 I2V compare to other video models?

Veo 3.1 Fast I2V excels at Rapid ad iteration, Social video, Cost-conscious premium work. It is a image to video model priced at $0.900/clip on FairStack. Key strengths: Strong fidelity for the price, Native audio. Compare all video models at fairstack.ai/models.

Start using Veo 3.1 Fast I2V today

$0.900/clip. Full API access. No subscription.

Start Creating