What is Sisif?
Sisif is a text-to-video generator. You type a prompt describing a scene, optionally upload a photo to animate, and the service renders a 5-second MP4 at 540x960 portrait (720x1280 on the ultra tier) for social platforms such as TikTok, Reels and Shorts. Longer briefs can be turned into a multi-shot story of up to 60 seconds, priced at $1 per 5 seconds, with a storyboard shown before payment.
Renders run on an open-weights model on hardware the company operates. The site states that clips carry no watermark, credits never expire, failed renders are refunded automatically and commercial use is included. Developers can call a REST endpoint with a bearer key, or add the MCP server so an AI agent can render and pay for a clip per call using MPP.
Key features
- Text-to-video render of a 5 s portrait MP4
- Optional photo animation
- Multi-shot story up to 60 s with storyboard preview
- No watermark on any clip
- REST API and webhooks
- MCP server for AI agents with per-clip payment
Who is it for
- Creators making TikTok, Reels and Shorts content
- Marketers producing short product or ad clips
- Developers and teams building video into apps or workflows
- AI agent builders
Pros and cons
- No watermark on any clip, even at the lowest price
- Pay per clip with no subscription required
- Failed renders are refunded and credits do not expire
- Clips are short, 5 seconds per render
- Output is portrait 540x960 by default
Sisif pricing
| Plan | Price | Includes |
|---|---|---|
| One clip | 1 USD / one-time | 5 s, 540x960, no watermark, refunded if render fails |
| Alpha Tester | 10 USD / month | 100 credits, about 8 clips a month |
| Starter Pack | 50 USD / month | 1000 credits, about 83 clips a month |
| Pro Creator | 200 USD / month | 5000 credits, month to month, unused credits roll over |
Prices copied from Sisif pricing, checked October 12, 2026. Currency as shown by the vendor; taxes may apply.
Is Sisif free?
No - according to the vendor, it is paid only.
Sisif alternatives
| Tool | Price from | Free plan | Category |
|---|---|---|---|
 Higgsfield AI | 19 USD/mo | trial | Video generators |
 Dreamina | 69 PLN/mo | yes | Video generators |
 ComfyUI | 16 USD/mo | trial | Video generators |
 Hailuo AI | 9.99 USD/mo | ? | Video generators |
 PixVerse | 8 USD/mo | ? | Video generators |
 Kling AI | 8,8 USD/mo | ? | Video generators |
FAQ
What is Sisif used for?
Turns a text prompt or photo into a short portrait AI video, $1 per clip with no watermark and no subscription, plus a REST API and MCP server.
Is Sisif free?
No - according to the vendor, it is paid only.
How much does Sisif cost?
The cheapest paid plan is 1 USD (vendor pricing, October 12, 2026).
What are the best Sisif alternatives?
Closest alternatives: Higgsfield AI, Dreamina, ComfyUI, Hailuo AI, PixVerse.
Data checked October 12, 2026 on the vendor website (sisif.ai).