Grok Imagine Video
Best Valuerapid-prototypingsocial-mediaxAI · Autoregressive Mixture-of-Experts (Aurora) · v1.0verifiedVerified
$0.05/sec
starting from, on FAL.ai
Resolution
720p
Duration
1–15s
Providers
3
API Pricing
Why Grok Imagine Video?
thumb_upStrengths
- Fastest generation in class — ~17 seconds prompt-to-output, 2-4x faster than competitors
- Lowest API pricing tier — $0.05/sec at 480p on FAL.ai, 8-15x cheaper than Google Veo 3.1
- Available on 3 major API providers (FAL.ai, WaveSpeed, Replicate) plus free via Grok apps
- Strong video-to-video editing with temporal consistency — text-driven scene restyling, object swapping, and character animation
- 7 aspect ratios (16:9, 9:16, 1:1, 4:3, 3:4, 3:2, 2:3) cover every major social platform without cropping
infoLimitations
- Max resolution capped at 720p — no 1080p or 4K, limiting professional production use
- No multi-shot generation, extend, or camera control presets
- No lipsync or digital human capabilities
- Video edit inputs capped at 8.7 seconds — shorter than the 15-second generation limit
- Closed source — not self-deployable, no model weights available
auto_fix_highPrompt Guide
- 1Think in 5 layers: Scene + Camera + Style/Lighting + Motion + Audio. Strong results touch at least 3 of the 5 layers; the best prompts cover all 5.
- 2Write natural language scene descriptions, not keyword piles — Grok Imagine responds better to 'a surfer carving a wave at sunrise' than 'surfer, wave, sunrise, ocean.'
- 3Use concrete motion verbs for camera — 'slow dolly forward,' 'smooth pan right,' 'handheld sway' produce more predictable movement than abstract descriptions.
- 4Front-load the subject + action — place your most important visual element first, followed by setting and style modifiers.
- 5Keep prompts minimal for creative variation — shorter prompts let Grok fill in more gaps, producing unexpected and diverse outputs. Add constraints only when you need precision.
- 6Iterate rapidly — ~17 second generation time means you can test 3-4 prompt variations per minute. Change one word at a time to isolate what works.
✓ Do this
- Structure prompts as: Subject + Action + Setting + Camera + Lighting/Mood
- For video-to-video editing, describe only the desired change — Grok preserves unmodified regions with temporal consistency
- Specify aspect ratio based on platform: 9:16 for TikTok/Reels, 16:9 for YouTube, 1:1 for Instagram
- For image-to-video, use high-quality input images — the model animates from the reference with natural motion and camera movement
- Use the 'fun' mode for stylized/creative outputs and 'normal' mode for realistic content
✗ Avoid this
- Max resolution capped at 720p — no 1080p or 4K output available
- Video editing inputs limited to 8.7 seconds maximum
- No dedicated camera control system — camera movement is prompt-guided only
- No multi-shot or extend capabilities for longer narratives
- Free via Grok products (iOS/Android/web) but API pricing applies for programmatic access
Example Prompts
“A surfer carving a wave at sunrise, cinematic lighting, wide-angle shot, slow motion. The sound of crashing waves and seagulls overhead.”
“Slow dolly forward through an abandoned warehouse, dust particles floating in shafts of golden light, empty metal shelves receding into shadow. Echoing drips and distant industrial hum.”
“Close-up of a hand placing a vinyl record on a turntable, needle drops, the warm crackle of analog audio fills the room. Shallow depth of field, warm amber light.”
Based on the official prompt guide →
FAQexpand_more
How much does Grok Imagine Video cost?
From $0.05/sec on FAL.ai. A 5-second video ≈ $0.25.
Where can I use Grok Imagine Video?
Via API on FAL.ai and WaveSpeed and Replicate.
How do I get good results with Grok Imagine Video?
Think in 5 layers: Scene + Camera + Style/Lighting + Motion + Audio. Strong results touch at least 3 of the 5 layers; the best prompts cover all 5. See the prompt guide below.