xAI prices Grok Imagine Video 1.5 per second of output: $0.08 at 480p, $0.14 at 720p and $0.25 at 1080p, plus $0.01 per input image, for clips of up to 15 seconds with a synced audio track. fal and OpenRouter resell it at exactly that list price.
On APIMODELS the same model is $0.045 per second at 480p, $0.0529 at 720p and $0.0882 at 1080p, 44–65% below xAI, and input images are not charged. A 10-second 720p clip costs $0.53 here against $1.40 at list. Any whole length from 1 to 15 seconds is accepted, text-to-video and image-to-video share one model id, and output carries no watermark.
USD per second of output, checked 2026-10-06 on each provider’s public price page or pricing API.
| Provider | 480p | 720p | 1080p | Notes |
|---|---|---|---|---|
| xAI (list) | $0.08 | $0.14 | $0.25 | +$0.01 per input image |
| fal | $0.08 | $0.14 | $0.25 | same as list |
| OpenRouter | $0.08 | $0.14 | $0.25 | same as list, +$0.01 per input image |
| Vercel AI Gateway | $0.08 | $0.14 | $0.25 | same as list, +$0.01 per input image |
| Replicate | $0.08 | $0.08 | — | preview, image-to-video only; one rate for 480p and 720p |
| APIMODELS | $0.045 | $0.0529 | $0.0882 | input images free, 1–15 s |
Price per second is only half of the bill. The other half is what happens when a clip fails or is blocked by moderation, and whether you can open an account and pay at all. “Not stated” means the provider’s public docs do not say.
| Provider | Failed or moderated jobs | Clip length | API | Account and payment |
|---|---|---|---|---|
| APIMODELS | Not charged, including moderation rejections | 1–15 s | Async task, poll or callback_url webhook; text- and image-to-video on one model id | Email or Google sign-up; card, PayPal, Alipay, USDT |
| xAI (official) | Moderated generations are still charged | 1–15 s | Async task with polling; no webhook documented | Prepaid credits by card or bank transfer |
| fal | Server errors not charged; invalid-input and content-policy rejections may be | 1–15 s | Queue with polling, streaming or webhook | Prepaid credits |
| OpenRouter | Not stated | 1–15 s | Async job, poll or callback_url webhook | Card or Alipay (5.5% fee, $0.80 minimum), USDC (5% fee) |
| Vercel AI Gateway | Not stated | 1–15 s | AI SDK video generation, background job or webhook | Card on file required, even for free credits |
| Replicate | Failed runs not charged | 1–15 s | Async predictions | Prepaid credit, valid one year, non-refundable |
cURL
curl -X POST https://api.apimodels.app/v1/video/generations \
-H "Authorization: Bearer $APIMODELS_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "grok-imagine-video-1.5",
"prompt": "A street drummer in the rain, crowd cheering, handheld close-up",
"resolution": "720p",
"duration": 10
}'Python
import requests
H = {"Authorization": "Bearer YOUR_APIMODELS_KEY"}
r = requests.post("https://api.apimodels.app/v1/video/generations", headers=H, json={
"model": "grok-imagine-video-1.5",
"prompt": "The product in image 1 rotates slowly on a marble table",
"images": ["https://example.com/product.jpg"], # omit for text-to-video
"resolution": "480p", "duration": 6,
})
print(r.json()) # poll GET /v1/video/generations?task_id=...xAI sells it directly at $0.08, $0.14 and $0.25 per second for 480p, 720p and 1080p, and fal, OpenRouter and Vercel AI Gateway pass that list price through. Replicate has an image-to-video-only preview at $0.08 per second with no 1080p. APIMODELS charges $0.045, $0.0529 and $0.0882 per second for all three resolutions, text-to-video and image-to-video alike, and does not charge for failed or moderated jobs. Prices checked on 6 October 2026.
xAI lists Grok Imagine Video 1.5 at $0.08, $0.14 and $0.25 per second at 480p, 720p and 1080p, plus $0.01 per input image. On APIMODELS it is $0.045, $0.0529 and $0.0882 per second with input images free, so a 10-second 720p clip costs $0.53 instead of $1.40.
Yes. Grok Imagine Video 1.5 generates a synced audio track with every clip and there is no separate audio charge, on xAI or here.
Yes, any whole length from 1 to 15 seconds at any of the three resolutions. A 15-second 1080p clip costs $1.32 on APIMODELS and $3.75 at xAI list.
