Cheapest at your usage
$1.50/mo
Runway API · Pay as you go
For 10 videos a month, 5 s each
Channels that sell it
2
Subscriptions: 0 · APIs: 2
Official specs
1080p · 1–15 seconds
Generates its own audio
Last confirmed
Oct 10, 2026
Next review Nov 9, 2026
The lightweight version of SpaceXAI's Grok Imagine Video 1.5. It does text-to-video and image-to-video, and its videos come with sound by default. The Grok API bills per second, and the price depends on the resolution.
Cheapest place to buy it at your volume
50 seconds of generation a month: 10 videos × 5 seconds each × 1 (average attempts per video). At least 720p, no audio needed. Change usage ↗
| Where to buy | Setting | How to buy | Per month |
|---|---|---|---|
| Runway API API | 720p Not specified · Per second | Pay as you go $0.03 per second | $1.50 |
| Grok API API | 720p Not specified · Per second | Pay as you go $0.03 per second | $1.50 |
Does the cheapest way to pay change with volume?
One line per channel: an API is a straight line; a subscription is the cheapest plan that covers the month, so it climbs in steps and stops past the largest plan (extra credit packs are not counted).
At 10 videos a month, each channel costs:
- Runway API$1.50/moCheapest
- Grok API$1.50/moCheapest
- 1–50 videos a month: Runway API is cheapest
Runway API and Grok API cost the same, so their lines overlap.
Official specs
| Clip length | 1–15 seconds |
|---|---|
| What it can do | Text to video, Image to video |
| Highest resolution | 1080p |
| Audio | Generates its own audio |
Official docs: 1–15 seconds; 1080p for text-to-video and image-to-video is upscaled from 720p; generated videos include an audio track by default.
From SpaceXAI's own page, confirmed on Oct 10, 2026. This is what the model can do; whether a given channel sells it, and at which settings, is in the prices below. Official spec page
Where it is available
None of the subscription tools this site tracks list it; for now it is sold only through the APIs below.
Pay-as-you-go API prices
| API provider | API model name | Resolution | Audio | Official price | Per second | Minimum per generation |
|---|---|---|---|---|---|---|
| Runway API | grok_imagine_1_5_lite | 480p | Not specified | 2 credits/s | $0.020 | — |
| Grok API | grok-imagine-video-1.5-lite | 480p | Not specified | $0.02/s | $0.020 | — |
| Runway API | grok_imagine_1_5_lite | 720p | Not specified | 3 credits/s | $0.030 | — |
| Grok API | grok-imagine-video-1.5-lite | 720p | Not specified | $0.03/s | $0.030 | — |
| Runway API | grok_imagine_1_5_lite | 1080p | Not specified | 14 credits/s | $0.140 | — |
| Grok API | grok-imagine-video-1.5-lite | 1080p | Not specified | $0.14/s | $0.140 | — |
Prices as each provider's official pricing page states them, confirmed Sep 18, 2026 – Sep 26, 2026. No subscription: you pay for the seconds generated. Prices exclude tax.
How the status is checked
Whether a model still runs is checked separately from prices: prices change monthly, but a model can disappear between two price syncs, quietly making every page that mentions it wrong. So each model record has its own confirmation date and review deadline; overdue records are flagged, never assumed to still be running.
Last confirmed on Oct 10, 2026; due to be rechecked by Nov 9, 2026.
Added automatically on Oct 10, 2026: a program reopened the official pages and matched every figure to the original wording before publishing.
More from the same developer
- Grok Imagine Video SpaceXAI Active
- Grok Imagine Video 1.5 SpaceXAI Active