Cheapest I2V API — Image-to-Video

The cheapest I2V API for developers: POST any photo and a motion prompt, get back a 5-second 720p MP4. One HTTP call. $0.20 per video (200 credits) — lower than Runway, Pika, and Kaiber per generated clip. Paid plans start at $10 for 10,000 credits.

Why PixelAPI is the cheapest I2V API

Most image-to-video APIs are priced as consumer subscription products, not developer tools. Runway and Pika bundle credits into monthly tiers optimised for their web editors — not for API throughput. PixelAPI is priced purely on per-call economics: 200 credits = $0.20 per 5-second clip at the $10/10K starter rate, with no monthly seat fee. At scale (Scale plan, 100K+ credits), the per-credit cost drops further. No hidden video-specific surcharges, no minimum monthly commitment, no watermarks.

Quick start — cheapest I2V API in one call

Sign up, purchase a plan, and POST your image. The endpoint returns a generation_id; poll until status=completed, then download the 5-second MP4 from output_url.

# Step 1 — submit image + prompt (multipart form)
curl -X POST https://api.pixelapi.dev/v1/seedance/generate \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -F "image=@photo.jpg" \
  -F "prompt=gentle breeze, natural movement" \
  -F "resolution=720p" \
  -F "camera_fixed=true"
# Response: {"generation_id": "uuid", "status": "processing", "estimated_seconds": 120, ...}

# Step 2 — poll until completed
curl https://api.pixelapi.dev/v1/seedance/UUID \
  -H "Authorization: Bearer YOUR_API_KEY"
# Response: {"status": "completed", "output_url": "https://..."}

pip install pixelapi
---
from pixelapi import PixelAPI
import time

client = PixelAPI(api_key="YOUR_API_KEY")

# Submit image-to-video job
result = client.image_to_video(
    image="photo.jpg",
    prompt="gentle breeze, natural movement",
    resolution="720p",
    camera_fixed=True
)

# Poll for completion
while result.status != "completed":
    time.sleep(10)
    result = result.refresh()

result.save("output.mp4")  # 5-second 720p MP4

npm install pixelapi
---
import { PixelAPI } from "pixelapi";
import { writeFileSync } from "fs";

const client = new PixelAPI({ apiKey: process.env.PIXELAPI_KEY });

const job = await client.imageToVideo({
  image: "./photo.jpg",
  prompt: "gentle breeze, natural movement",
  resolution: "720p",
  cameraFixed: true,
});

const result = await job.waitForCompletion(); // auto-polls
await result.save("output.mp4"); // 5-second 720p MP4

composer require pixelapi/pixelapi
---
<?php
use PixelAPI\Client;

$client = new Client(getenv("PIXELAPI_KEY"));

$job = $client->imageToVideo([
    "image"        => "photo.jpg",
    "prompt"       => "gentle breeze, natural movement",
    "resolution"   => "720p",
    "camera_fixed" => true,
]);

$result = $job->waitForCompletion();
file_put_contents("output.mp4", $result->getBody());

gem install pixelapi
---
require "pixelapi"

client = PixelAPI::Client.new(api_key: ENV["PIXELAPI_KEY"])

job = client.image_to_video(
  image:        "photo.jpg",
  prompt:       "gentle breeze, natural movement",
  resolution:   "720p",
  camera_fixed: true
)

result = job.wait_for_completion
File.binwrite("output.mp4", result.body)

go get github.com/pixelapi/pixelapi-go
---
import "github.com/pixelapi/pixelapi-go"

client := pixelapi.New("YOUR_API_KEY")
job, err := client.ImageToVideo(pixelapi.I2VParams{
    Image:       "photo.jpg",
    Prompt:      "gentle breeze, natural movement",
    Resolution:  "720p",
    CameraFixed: true,
})
if err != nil { panic(err) }

result, err := job.WaitForCompletion()
if err != nil { panic(err) }
result.Save("output.mp4")

Pricing — cheapest I2V API vs Runway, Pika, Kaiber

Rival per-clip pricing was not publicly verifiable at time of writing (October 2026) — see each provider's pricing page for current rates. PixelAPI pricing: 200 credits × $0.001/credit = $0.20 per 5-second clip at Starter plan rates.

What you get back

API reference — key parameters

Common workflows

The cheapest I2V API is used in production for these creative and marketing workflows:

More use-case guides: all industries →

Integrations & SDKs

Comparison vs alternatives

Rate limits & error handling

60 requests/minute on Starter, 120 on Pro, and 300 on Scale. Parallel concurrent video jobs: 10 / 20 / 50 respectively (see parallel processing docs). Exceeding the rate limit returns HTTP 429 with a Retry-After header. Recommended: exponential backoff starting at 2s, doubling on each retry up to 30s. The Python and Node SDKs handle this automatically.

# Python SDK — auto-retries 429 with exponential backoff
from pixelapi import PixelAPI
client = PixelAPI(api_key="...", max_retries=4)
job = client.image_to_video(image="photo.jpg", prompt="gentle breeze")
result = job.wait_for_completion()  # auto-polls; auto-retries on 429
result.save("output.mp4")

Video jobs that fail are auto-detected and auto-refunded — you are never charged for a job that does not produce a downloadable MP4. The status=failed response includes an error_message with the reason.

Frequently asked questions