Frame from Looping 3D pelican on a bike at sunset
PromptFull
A seamless looping 3D animation made in Blender (Cycles), 4 seconds, 24 fps, 16:9, of an anthropomorphic Australian pelican pedaling a vintage steel-frame bicycle along a coastal boardwalk road at golden-hour sunset. Locked side-profile camera, wide cinematic shot, the pelican and bike centred and held in frame for the entire clip.

Subject: a large Australian pelican in breeding plumage. Body and neck pure white with soft, dense feather detail; primary and secondary wing feathers and the tail glossy jet black, with a black band along the folded wing; a subtle pale-yellow tint on the chest. The head is white with a faint grey crest at the back. The bill is very long and pale pink with a soft cobalt-blue stripe along the upper mandible; the throat pouch is translucent pale pink flushing to scarlet at the edge and deep blue at the base, backlit so the sun glows through it. Eyes dark brown with a thin yellow eye-ring. Legs and webbed feet slate blue-grey. A fresh silver-blue mackerel is clamped sideways in the bill, head and tail sticking out either side. The pelican sits upright on the saddle, wing tips resting on the handlebars.

Motion: the pelican is actively pedaling. Both webbed feet stay on the pedals and drive the cranks through exactly two full revolutions over the clip, so the pedal position on the last frame matches the first. Knees rise and fall with each stroke, the hips rock very slightly, the body bobs a few millimetres in time with the cadence. Both wheels rotate continuously at a speed matched to the crank ratio, spokes readable but slightly motion-blurred. The chain moves over the sprockets. The fish tail flexes gently with the bobbing; the neck and pouch sway a little with each stroke; a few loose feathers and the crest flutter in the headwind. The head stays level and the eye stays fixed ahead. No wobble in the bike's line of travel.

Camera and loop: the camera is locked to the bicycle, tracking sideways at exactly its speed, so the pelican and bike hold a constant position in frame while the environment scrolls right to left. The road markings, cracks, boardwalk fence posts, dune grass and distant waves scroll at parallax speeds matched to the wheel rotation. Every scrolling element is tiled so that the last frame is identical to the first: fence post spacing, grass clumps and road cracks repeat at intervals that divide evenly into the distance travelled over the clip. The sun, sky gradient and clouds stay fixed. Grass sways on a loop period that also divides evenly into the clip length. No cuts, no camera drift, no zoom.

Bicycle: a classic teal-green steel touring bike, thin chrome spokes, tan-wall tyres, brown leather saddle, cork handlebar grips, chain and derailleur visible with subtle metallic reflections.

Environment: an empty asphalt road with faint cracks in the foreground, a low sand dune and a weathered wooden boardwalk fence behind it, tufts of dune grass and sea oats swaying in the wind. Beyond the dunes a calm ocean with gentle waves and a warm sun sitting low on the horizon.

Colour palette and lighting: warm and cinematic. Sky graded from deep amber and peach near the horizon through soft coral and rose to a dusty lavender-blue at the top, with a few thin backlit clouds. The sun is a soft orange disc just above the water, casting a long golden reflection across the sea and long warm shadows across the road that move with the bike. Strong rim light outlines the white feathers in gold and glows through the pink pouch; the black wing feathers catch a thin warm highlight along their edges. Fill light is a soft cool blue bounce from the sky so the white plumage reads as white with peach shading rather than orange. Overall tones lean warm: amber, honey, terracotta, sand, with teal, pink and cobalt as accents.

Render style: high-quality Blender Cycles render, physically based materials, subsurface scattering on the bill pouch and fish, soft global illumination, shallow depth of field with the pelican and bike tack-sharp and the horizon gently blurred, consistent lighting and exposure across all frames, subtle film grain, slight bloom around the sun, no text, no watermark, no flicker.

Make it yours. Change the "Subject:", "Bicycle:", and "Environment:" paragraphs for your own character and setting. The "Camera and loop:" paragraph is what makes the clip loop; keep it.

Make it hereFree runs soon

Looping 3D pelican on a bike at sunset

A 10-second side-by-side of the pelican-on-a-bicycle test done in 3D: Claude Opus 5.5 and GPT-6 Sol each built a golden-hour Blender scene from an empty file with Python, from one long art brief. The creator preferred Opus's atmosphere and detail.

“they had to build the whole thing from an empty scene with python scripts, no downloaded assets or anything”

You'll need

  • Blender connected to your agent through BlenderMCP or another scripting bridge
How it was made

Both ran inside atomic.chat, an app the creator founded, connected to Blender through BlenderMCP: Claude by API key and GPT-6 Sol through a Codex subscription. Each built the scene from an empty file with Python scripts and no downloaded assets; per the creator, one prompt even downloaded Blender and connected it. GPT-6 Sol finished faster, but its leg rig bends outwards; Opus got the atmosphere, with a small artifact where the legs meet the body. The brief asks for a 4-second loop at 24 fps; the post shows both results in a 10-second clip.

Opus 5.5: $48.11 through an API key. GPT-6 Sol: $34.55 API-equivalent, on a Codex subscription.

Posted Sep 23, 2026 · r/ChatGPT on Reddit · 514 upvotes · 69 comments

Prompt from: Comment by the creator, in a code block

Creator's comment with the prompt

Look notesby Reference

Two 3D renders side by side of a pelican riding a teal bicycle along a seaside boardwalk at sunset, each under a label with the model's name and a running dollar cost.

Color
Opus: a lavender and peach sky with a pale sun, white plumage, a pink bill, and a teal bike with tan tyres. GPT-6 Sol: a darker dusk with slate sea and sky, grey-white feathers with black wing tips, a long pink pouch, and a deep teal bike. Costs in green.
Type
Bold black sans-serif model names beside small Claude and OpenAI logos, and bold green dollar figures at the right of each label bar.
Framing
A wide frame split into two panels under white label bars. Both pelicans are seen in side profile and centered, with the road in front and the fence, dunes, and sea behind.
Structure
The same side-on shot throughout; across the frames only the pedaling pose and the background change, while the cost labels climb from $46.33 to $48.11 for Opus and from $33.27 to $34.55 for GPT-6 Sol.

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