README.md

metadata

license: cc-by-sa-4.0

Apple-Pi (Full)

Full release of the Apple-Pi physics benchmark: 400 cases (243 simulation + 157 realworld) for evaluating physics reasoning in image and video generation models.

Folder structure

apple-pi-full/
├── README.md
├── croissant.json
├── sim_subset/         # 243 simulation cases (10 physics tasks)
└── realworld_subset/   # 157 realworld cases (7 physics categories)

Per-case contents

Simulation (sim_subset/<task>/<case_id>/) — generated with NVIDIA Isaac Sim (rigid-body PhysX simulator):

• annotation.txt, physics_duration.txt, formula_info.json, prompt.txt
• initial_state/ (rgb_0000 + white-bg variants + instance segmentation + camera params)
• instantaneous_velocity/ (target-time velocity reference)
• rgb/0000.png ~ 00NN.png (rendered video frames @ 24 fps)
• instance_segmentation/, mask/, velocity/, depth/, density/, camera_parameters/

Realworld (realworld_subset/<category>/[<subcategory>/]<case_id>/) — recorded under controlled laboratory conditions:

• annotation.txt, formula_info.json, physics_duration.txt, annotation_config.json
• initial_state/ (first-frame extraction + variants)
• instance_segmentation/, mask/, instantaneous_velocity/
• rgb/video.mp4

Tasks

Simulation (10 physics tasks): at_rest, circular, freefall, inclined_plane, inelastic_collision, perfectly_elastic_collision, perfectly_inelastic_collision, projectile, uniform_linear, composition.

Realworld (7 physics categories): NewtonsFirstLaw/AtRest, Gravity/{Freefall, Projectile}, ConservationofMomentum/{InelasticCollision, PerfectlyElasticCollision, PerfectlyInelasticCollision}, Composition.

Intended use

Zero-shot evaluation of physics reasoning in image- and video-generation models across perception, comprehension, and generation tracks. Not intended for training.

Companion repository

A 100-case representative sample (50 simulation + 50 realworld) is also released for quick inspection at AnonymousSubmitt/apple-pi.

License

CC BY-SA 4.0

Citation

[Anonymous] Apple-Pi: Physics Infographics Benchmark. 2026.