Grok Imagine Video is not free on official xAI/Grok platforms as of March 2026 (free tier removed due to high demand and misuse concerns), but you can access it affordably — or with free starter credits — via third-party aggregators like CometAPI. CometAPI offers the model at just $0.04 per second (480p), with new users often receiving $1–$5 in free credits upon signup.
This guide shows you exactly how to generate high-quality text-to-video or image-to-video clips (up to 15 seconds with native audio) for pennies or even free initially, plus full API tutorials and comparisons to Sora 2.
Grok Imagine Video, launched by xAI on January 28, 2026, has quickly become one of the most talked-about AI video tools. It delivers photorealistic 720p videos with synchronized native audio, strong prompt adherence, and creative controls that rival or surpass OpenAI’s Sora 2 in speed and style flexibility.
What Is Grok Imagine Video?
Grok Imagine Video is xAI’s flagship text-to-video and image-to-video generation model (model ID: grok-imagine-video), powered by the proprietary Aurora engine. It creates short cinematic clips (1–15 seconds) directly from natural language prompts, uploaded images, or existing video references. Key capabilities include:
- Native audio generation: Synchronized sound effects, ambient music, character speech, and lip-sync — no post-production needed.
- Advanced editing: Animate still images, extend clips, remove/replace objects, restyle scenes, or apply “Spicy,” “Fun,” or “Normal” modes.
- Output specs: Up to 720p resolution, customizable aspect ratios (16:9, 9:16, 1:1), durations 1–15 seconds.
- Best-in-class features: Exceptional motion consistency, prompt following (including iterative refinements), and photorealistic or stylized outputs (realistic, sci-fi, fantasy).
Following the January 28 API launch, xAI rolled out video extension (continue any frame), multi-image animation (up to 7 references), and improved audio in February–March updates. However, free access on grok.com/imagine and the X app was heavily restricted or eliminated for non-subscribers around mid-March due to deepfake concerns and server load. Official Grok users now report “paywall” prompts even for single generations on free accounts.
Real-world performance data (from independent benchmarks and xAI announcements):
- Generation speed: 10–17 seconds for 10-second clips (2–4× faster than many competitors).
- Quality rankings: Often tops charts for motion stability and audio sync versus Veo 3.1 or Kling 2.5.
- Use cases: Short social media ads, cinematic storyboards, product demos, educational animations, and creative experiments.
Is Grok Imagine Video free? Latest 2026 Access Reality
Whether it is free depends on the platform you use. If you are using xAI's official channels, it is no longer fully free. However, if you look to third-party integration platforms—such as CometAPI—free usage quotas are still available.
- Early 2025–early 2026: Limited free generations (3–10 images/videos per day or rolling 2-hour windows) were available to all X users and grok.com visitors.
- March 2026 update: Free tier effectively removed for video (and often image) generation. Users now see immediate upgrade prompts. Free/logged-in accounts get 0–very limited daily attempts; full access requires X Premium (~$8–$16/mo), Premium+ (~$40/mo), or SuperGrok (~$30/mo).
Good news: You can still access near-free or low-cost usage through API aggregators like CometAPI, which proxy the official model at discounted rates (up to 20% off) and often include signup bonuses (up to 5$).
How Much Does Grok Imagine Video Cost Officially?
Official xAI Grok Imagine API (via x.ai/api/imagine or console.x.ai):
- Priced at $4.20 per minute of generated video (including audio) — roughly $0.07 per second.
- Additional costs for high-res or batch processing.
- Requires xAI API key and billing setup; no generous free credits for video.
Subscription route (Grok app/X):
- X Premium: Limited quotas (~20–50 videos/24h depending on tier).
- SuperGrok: Higher limits but still rate-limited during peaks.
How to Get Grok Imagine Video for Free (or Almost Free) in 2026
The most reliable “free” path is CometAPI — a unified AI API platform that aggregates 500+ models (including official xAI endpoints) at 20–40% lower prices than direct vendors. New users frequently receive $1–$5 free credits after signup .
Why CometAPI wins for free/cheap access:
| Category | Item | Price |
|---|---|---|
| Input Pricing | Text | N/A (Free) |
| Image | $0.0016 | |
| Video per second | $0.008 | |
| Output Pricing | 480p | $0.04 |
| (Per second by resolution) | 720p | $0.056 |
- Grok Imagine Video pricing: $0.04/second (480p) or $0.056/second (720p) — up to 43% cheaper than official.
- Sora 2 alternative: Only $0.08/second.
- OpenAI-compatible SDK → one API key for everything.
- Async processing, usage analytics, and no vendor lock-in.
- CometAPI is the most stable and developer-friendly
Alternative Solutions in CometAPI: Sora 2 and Other Video Models
CometAPI’s current video-generation alternatives to Grok Imagine Video include Sora 2, Sora 2 Pro, Veo 3 Fast, and Veo 3.1 Pro . CometAPI lists Grok Imagine Video at $0.04/sec, Sora 2 at $0.08/sec, Sora 2 Pro at $0.24/sec, and Veo 3.1 Pro at $2 per request. CometAPI lets you switch models instantly without new keys. Here’s how Grok Imagine Video stacks up:
| Feature | Grok Imagine Video (xAI) | Sora 2 (OpenAI via CometAPI) | Veo 3.1 Pro (Google) | Kling 2.5 / Hailuo AI |
|---|---|---|---|---|
| Price per second | $0.04 (480p) / $0.056 (720p) | $0.08 / $0.24 (Pro) | ~$2 per request | Varies (~$0.05–$0.10) |
| Max Duration | 15 seconds | Up to 20+ seconds | 8–10 seconds | 4–10 seconds |
| Native Audio | Yes (lip-sync, effects, speech) | Yes | Limited | Yes |
| Image-to-Video | Excellent | Strong | Very good | Good |
| Editing Capabilities | Full (extend, restyle, object swap) | Moderate | Strong | Lip-sync focused |
| Speed | 10–17 seconds | 60–120+ seconds | Fast | Fast |
| Best For | Creative control, audio sync, speed | Cinematic realism | Photorealism | Effects & motion |
| Content Policy | “Spicy” mode available (moderated) | Strict | Strict | Varies |
A simple rule of thumb is this: choose Grok Imagine Video when you want fast, lower-cost iteration and integrated editing; choose Sora 2/ veo 3.1 when you need stronger audio coupling and cinematic realism; choose Sora 2 Pro when quality is worth the premium.
How to Use Grok Imagine Video API Free on CometAPI (Step-by-Step Tutorial)
Step 1: Sign up & claim free credits
Go to cometapi.com, start by creating a CometAPI account and requesting the trial credit described in its documentation. New users currently receive $1 in trial credits after registration and a request to product@cometapi.com— enough for 20–30 seconds of 480p video.
Step 2: Choose your endpoint
Base URL: https://api.cometapi.com/v1 (or specific Grok routes). Use OpenAI-compatible client or raw HTTP.
Step 3: Generate your first video (Python example)
import requests
import time
API_KEY = "your_cometapi_key"
BASE_URL = "https://api.cometapi.com/grok/v1" # or unified endpoint
headers = {
"Authorization": f"Bearer {API_KEY}",
"Content-Type": "application/json"
}
payload = {
"model": "grok-imagine-video",
"prompt": "A futuristic cyberpunk city at night with flying cars and neon rain, cinematic lighting",
"duration": 10,
"resolution": "720p",
"aspect_ratio": "16:9"
}
# Create generation task
response = requests.post(f"{BASE_URL}/videos/generations", headers=headers, json=payload)
task_id = response.json().get("request_id")
# Poll for result
while True:
status = requests.get(f"{BASE_URL}/videos/{task_id}", headers=headers).json()
if status.get("data", {}).get("status") == "SUCCESS":
video_url = status["data"]["data"]["video"]["url"]
print("✅ Video ready:", video_url)
break
time.sleep(10)
Download the ephemeral MP4 immediately. Cost for this 10s 720p clip: ~$0.56.
Image-to-Video example: Add "image": "https://your-image-url.jpg" or base64.
Step 4: Monitor usage & scale
CometAPI dashboard shows real-time costs, success rates, and analytics. Set budgets to avoid surprises.
Advanced parameters: Add style: "cinematic", custom modes, or editing endpoints for refinements.
Pro tip: Start with 480p for testing to maximize free credits. Once credits are used, top-up is cheap and instant.
Option: PlayGround
After registering and logging in, simply enter "prompt" and a reference image in PlayGround to output the video.

Advanced Use Cases, Best Practices & Limitations
Use cases with data:
- Marketing: 80% faster content creation vs traditional editing (user reports).
- Education: Animate historical events or scientific processes.
- Filmmaking: Storyboard prototypes before full production.
Best practices:
- Use specific, layered prompts (subject + action + style + lighting + camera movement).
- Leverage image references for consistency across clips.
- Test “Spicy” mode responsibly (age-verified, moderated).
Limitations (March 2026 data):
- Max 15s per clip (extend via API for longer sequences).
- Ephemeral output URLs (download fast).
- Content moderation blocks illegal/harmful prompts.
- Rate limits during peak hours on aggregator platforms.
Ethical note: Always respect copyright, consent, and platform policies. xAI and CometAPI enforce strict guidelines.
Comparison Table: Official vs CometAPI vs Other Platforms
| Platform | Grok Imagine Video Cost | Free Credits? | Ease of Use | Best For |
|---|---|---|---|---|
| Official xAI API | $0.07/sec | Limited | API only | Heavy enterprise |
| CometAPI | $0.04–$0.056/sec | Yes ($1+) | Excellent | Developers & cost savings |
| Grok App/X (paid) | Subscription-based | No (post-Mar) | UI only | Casual users |
Conclusion: Start Generating Grok Imagine Videos Today
Grok Imagine Video represents a massive leap in accessible AI creativity, but official free access has ended. CometAPI solves this perfectly: lower prices, unified access, Sora 2 alternatives, and free starter credits make professional-grade video generation realistic for everyone — from hobbyists to agencies.
Action steps:
- Visit CometAPI → sign up → claim credits.
- Run the Python example/ playground above.
- Experiment and scale.
With 2026’s rapid AI evolution, tools like this democratize filmmaking. Bookmark this guide, share your creations, and stay updated — CometAPI continue shipping improvements daily.
