HeyGen: HeyGen Video vs SpaceXAI: Grok Imagine Video 1.5 Lite
A side-by-side comparison of HeyGen: HeyGen Video ($0.35 / second) and SpaceXAI: Grok Imagine Video 1.5 Lite ($3.50 / second) using current USD prices and capabilities from the api14 catalog. Both run through the same OpenAI-compatible API.
Specifications
| HeyGen: HeyGen Video | SpaceXAI: Grok Imagine Video 1.5 Lite | |
|---|---|---|
| Provider | HeyGen | xAI |
| duration_seconds_2k | $0.35 / second | - |
| duration_seconds_480p | $0.07 / second | - |
| duration_seconds_768p | $0.13 / second | - |
| reference_input_images | $0.14 / second | - |
| reference_duration_seconds_2k | $0.63 / second | - |
| reference_duration_seconds_480p | $0.25 / second | - |
| reference_duration_seconds_768p | $0.35 / second | - |
| cents_per_image_input | - | $3.50 / second |
| cents_per_video_output_second_480p | - | $7.00 / second |
| cents_per_video_output_second_720p | - | $10.50 / second |
| cents_per_video_output_second_1080p | - | $49.00 / second |
| Context window | - | - |
| Max output | - | - |
| Input | text, image, video, audio | text, image |
| Output | video | video |
| Tool calling | ||
| Structured output | ||
| Reasoning control | ||
| Added | Sep 30, 2026 | Oct 6, 2026 |
Switch with one string
Both models use the same endpoint and request shape. Change the model value from "heygen/heygen-video-1" to "x-ai/grok-imagine-video-1.5-lite" and prompts, streaming and tools keep working.
import OpenAI from "openai";
const client = new OpenAI({
baseURL: "https://api14.com/api/v1",
apiKey: process.env.API14_API_KEY,
});
// Video generation is asynchronous: submit, then poll until completed.
let job = await client.post("/videos", { body: {
"model": "x-ai/grok-imagine-video-1.5-lite",
"prompt": "A drone shot over turquoise ocean waves at sunrise",
"duration": 8,
"resolution": "720p",
"aspect_ratio": "16:9"
} });
while (!["completed", "failed"].includes(job.status)) {
await new Promise((r) => setTimeout(r, 5000));
job = await client.get(`/videos/${job.id}`);
}
console.log(job.status, job.unsigned_urls);
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