Sometimes you do not need a carousel or a document. You need one bespoke visual: a single stat revealed with impact, a concept illustration that makes an abstract idea concrete, a scroll-scrubbed scene for a landing page. Historically these were designer-and-animator work, out of reach for a marketing team that needs the asset today.
The naive AI approach ships broken results. A "five B2B design delays" brief renders as five stacked gray rows instead of an actual illustration. A motion graphic ships as a black MP4 because the shapes were colored too close to the background. The failure is not that AI cannot design. It is that nobody checked whether the output was legible before it shipped.
We think a machine should author on-brand custom graphics, static or animated, and should fail clearly rather than ship something broken. Here is how.
The real problem: bespoke visuals with no specialist
A marketer's visual needs do not fit neatly into "chart" or "carousel." A diagram, an architecture map, an explainer animation, a scroll story: these are the assets that make a complex product legible, and they are precisely the ones generic tools do not cover. Data-chart tools cannot draw a concept. Template tools cannot animate one. So the idea either gets dumbed down to a bullet list or dropped.
Motion makes the gap wider. An animation is not a static design with movement bolted on; it has timing, sequence, and hierarchy. Do it blindly and you get the black-MP4 failure: technically a video, visually nothing.
Our take: one timeline, and fail clearly over ship broken
The Design a Custom Graphic Job gives the marketer three modes and one underlying timeline:
- Static produces a fixed-size artboard with no motion, exportable to PNG, PDF, or HTML.
- Animated produces a self-playing motion graphic on a deterministic timeline, exportable to a frame-accurate MP4.
- Scroll produces a scroll-scrubbed scene, premium landing-page style, driven by scroll position on the same timeline.
The visual is authored as HTML and custom inline SVG by the most capable design model (Claude Opus 4.8), with any raster imagery composed by the image model, and themed on your brand style preset so it is on-brand by construction. A two-pass pipeline art-directs the scene before rendering it.
The principle that matters most is the guardrail:
Fail clearly over ship broken. The legibility gate refuses to file a black MP4, and shows you the near-black frame beside the score that caught it.
How the legibility gate works
Before a motion or scroll graphic is filed, the engine renders the scene's first frame and last frame and measures that clearly visible content actually appears, against real contrast and reveal floors. A faster pre-check rejects an all-low-contrast scene without even rendering. If a scene fails, the engine re-authors it once with the measured cause appended. If it still renders invisible, it fails clearly rather than filing a broken video.
And it shows its work. The check surfaces as a visible legibility evidence card, the peak contrast and reveal scores against their floors, plus the actual start and end frames it judged, emitted whether the scene passed or failed. You are never guessing why a graphic looked wrong. The machine tells you what it measured.
For static graphics, an optional critique pass shows the rendered artboard to a vision director; if it reads as a plain row-list or trips an anti-pattern, it re-authors once, so what ships is an illustration, not a layout in disguise.
One animation, three destinations
The deterministic timeline is the quiet enabler. Because the animation is authored on a single seek-based timeline, one animation projects to an exported MP4, to the editor's scrubber, and to a scroll-scrubbed scene with no re-wiring. Motion is a first-class citizen, not a buried flag.
There is also a companion Job, Animate a Graphic, that takes an existing static graphic or a whole carousel and produces two deliverables: an animated MP4 where each element animates into position, and a self-contained animated HTML page that plays live. The provenance chain runs source graphic to animated page to video, so when the source changes, everything downstream knows it is stale.
Pick the mode. Let the engine art-direct and apply the brand. Trust the gate to catch the black MP4 before your audience does. That is bespoke visual work at marketing speed, without the specialist and without the broken output.
Related: design the carousel this motion often starts from, and generate the on-brand imagery inside it.
