One sentence in.
Hand-drawn explainer out.

LLMSketch turns plain English into whiteboard-style sketch videos, SVG diagrams and lyric videos. Every scene passes deterministic PIL layout checks + Hosted JEV verification before FFmpeg ever runs.

2 free previews per day · watermarked · no signup

Deterministic PIL bounding checks + Hosted JEV judge run before FFmpeg — invalid scenes auto-repair once or reject cleanly (422), and passing outputs include Reverse JEV critique questions.

Optional: paste custom SceneSpec JSON (try an oversized label to see pre-FFmpeg 422 rejection)
10 free tool sketches/day (2/day for MP4)
GPU-Free PIL + Hosted JEV Judge MP4 · SVG · PNG · animated SVG Zero invalid FFmpeg waste (422 fast-fail) API + webhooks for n8n / Make

Watch it draw

Marketing explainer

Loyalty program flow — scene written by an LLM, drawn stroke by stroke.

Lyric video

Any song → timed sketch lyric video. Built for music catalogs.

Site-build SVG

Hand-drawn SVG diagram

The same scene as a 12 KB scalable SVG — drop into any website.

How it works

You describe itOne sentence or a structured JSON scene.
LLM storyboards itA local model writes the scene: nodes, arrows, labels, timing.
CPU draws itHand-drawn jittered strokes animate on, frame by frame. $0 cloud cost.
You publish itMP4 for social, SVG for sites, animated SVG for web heroes.

Pricing

Every render runs on sovereign CPU — no per-render cloud fees, no surprise bills.

Credit Pack
$15
one-time
  • 50 render credits
  • Never expire
  • MP4 + SVG outputs
  • API access
Buy credits
Starter
$19
/month
  • 60 renders / month
  • 720p MP4
  • Voiceover + music bed
  • Web app + API
Start Starter
Pro / Automation
$49
/month
  • 250 renders / month
  • 1080p MP4
  • Custom audio upload
  • Webhooks for n8n / Make
Go Pro
B2B Fast Pack
$249
one-time
  • 10 custom explainer videos
  • Delivered in 24 hours
  • Your script, your brand
  • Founders & course creators
Order 10 videos

Secure checkout by Stripe. Your API key appears instantly after payment.

What people sketch

📣 Marketing

Product explainers, funnel walkthroughs, onboarding flows — the videos that convert, without an animator.

🌐 Website builds

Hand-drawn SVG diagrams and animated heroes that make any site feel crafted. 12 KB, infinitely scalable.

🎵 Music catalogs

Turn any track into a timed sketch lyric video. One API call per song — built for catalogs of thousands.

FAQ

Why not just use a generative video AI?

Generative models garble text labels and misalign arrows — fatal for diagrams. LLMSketch rasterizes real fonts and deterministic geometry, so every label is exactly what you asked for. Use generative AI for mood B-roll; use LLMSketch for anything with words in it.

What do I get from the API?

POST a prompt or scene JSON to api.programmaticsketch.dev, poll the job, download MP4/SVG. Full docs, SceneSpec schema and n8n/Make templates at programmaticsketch.dev.

Do free previews expire?

Preview renders are watermarked and kept for 24 hours. Paid renders are yours to download and keep forever.

Can I use my own voice and music?

Pro plans support custom audio upload. Starter includes built-in voiceover and a ducked background music bed.

Who runs this?

An independent sovereign-AI studio. Rendering runs on our own infrastructure — your prompts are not sold, shared or used to train third-party models. Questions: [email protected].