AI Promo & Explainer Video API

AI Promo & Explainer Video API — turn a one-line prompt (or your own slides) into a polished, narrated MP4 in minutes.

How it works

• Send a prompt and the AI scripts a 4–6 scene video: hook → key points → call to action.
• Adds an AI voiceover, kinetic typography, smooth motion, and royalty-free stock backgrounds.
• Rendered deterministically (React → MP4) — fast, and free of the artifacts and flicker of video-diffusion models.
• Output in 16:9, 9:16 (TikTok / Reels / Shorts) or 1:1. Returns a hosted CDN URL to the finished video.

Great for product & promo videos at scale, social ad variations, explainer clips, listing videos, and faceless content.

Endpoint: POST /v1/video/generate · Auth: X-API-Key header. Interactive docs at api-slide-video.knowlez.com/docs.

Plans

• Starter — $9/mo · 300 video-seconds included · $0.05/second overage.
• Pro — $29/mo · 3,000 video-seconds included · $0.03/second overage.
• Scale — $299/mo · 30,000 video-seconds included · $0.02/second overage.