What is Sisif.ai used for?

Sisif.ai is an AI text-to-video generator with a REST API and MCP server that renders 5-second portrait clips for $1 each, with no watermark and no subscription. It is a good fit for short vertical clips for TikTok, Reels and Shorts; and agents generating video through an API.

How much does Sisif.ai cost?

Paid plans for Sisif.ai start at $10 per month, and there is no free plan.

Is Sisif.ai open source?

No. Sisif.ai is proprietary (closed-source) software and can't be self-hosted. In the AI Tools category, open-source options include DramaClaw, ArcReel and ClipForge.

What are some alternatives to Sisif.ai?

Sisif.ai competes with Runway, Luma AI and Pika.

Sisif.ai: features, pricing and alternatives

About Sisif.ai

Sisif turns a text prompt of up to 500 characters into a 5-second portrait video clip (540 by 960, with 720 by 1280 on an ultra tier) for $1 per clip, paid once. The site stresses its terms: no watermark, credits that never expire, refunds for failed renders, commercial use included and no subscription or card kept on file.

It runs an open-weights model on its own GPUs rather than a third-party API, shows the prompt that produced each example render, and offers longer briefs with timecodes as stories at $1 per 5 seconds. A REST API and an MCP server at sisif.ai/mcp let agents request and pay for a single clip per call using pay-per-clip card payments over MPP. Monthly plans exist with the same terms.

Key features

Text-to-video for 5-second portrait clips
$1 per clip with no subscription
No watermark and no credit expiry
Refund on failed renders
REST API and MCP server
Pay-per-call agent payments

Good fit for

Short vertical clips for TikTok, Reels and Shorts
Agents generating video through an API

Tags: text-to-video; ai-video; api; mcp; pay-per-use; shorts

Sisif.ai: questions and answers

What is Sisif.ai used for?: Sisif.ai is an AI text-to-video generator with a REST API and MCP server that renders 5-second portrait clips for $1 each, with no watermark and no subscription. It is a good fit for short vertical clips for TikTok, Reels and Shorts; and agents generating video through an API.
How much does Sisif.ai cost?: Paid plans for Sisif.ai start at $10 per month, and there is no free plan.
Is Sisif.ai open source?: No. Sisif.ai is proprietary (closed-source) software and can't be self-hosted. In the AI Tools category, open-source options include DramaClaw, ArcReel and ClipForge.
What are some alternatives to Sisif.ai?: Sisif.ai competes with Runway, Luma AI and Pika.