Pelican BicycleBenchmark · 2026
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GPT-6.1 Sol

OpenAI The editorialist Rank 3 / 8
20.5/ 25

Inverse kinematics under a coral frame.

GPT-6.1 Sol — still frame from its animated pelican-on-a-bicycle run
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This is the model's original HTML output. Its own controls are inside the frame.

Scorecard25 pts

Semantics
4.5
Anatomy
3.0
Bicycle
4.0
Motion
4.5
Polish
4.5
Total
20.5 out of 25

Motion check

Wheels rotate
Yes
Crank rotates
Yes
Feet track pedals
Yes
Scene moves
Yes

Verdict

The cleanest art direction: cream paper, coral frame, and a poster-like header that reads “Today, tailwind.” Under the hood, the wheels spin and the legs are solved with inverse kinematics against a rotating crank, so the feet really do follow the pedals. The weakness is anatomy: the legs are thin curves with exaggerated knees, the feet are straight line segments, and the chain is missing. A pause button is included.

What works

  • Correct inverse-kinematics foot tracking against a rotating crank.
  • Wheels, crank, scarf, wing and road all move.
  • Strong editorial layout and a working pause button.

What breaks

  • Feet are 29px straight lines, not webbed pelican feet.
  • Knees bend past the plausible range, producing a loop-like leg.
  • No chain; the drivetrain is simplified.

Spec

Vendor
OpenAI
Access
Consumer client, zero-shot
Tested
2026-10-27
Controls
Pause button
File
gpt-6-1-sol.html · 8.5 KB
Rank
3 / 8

Editorial score, one run. The full rubric is in the methodology.