Benchmark Almanac

ContPhy

Seed2.0 Pro 67.4% leads since Feb 2026 Fading

Models infer physical properties such as mass and density of fluids and soft bodies from videos and predict their dynamics.

Published at ICML 2024. The format field is a guess.

In the authors’ words

We introduce the Continuum Physical Dataset (ContPhy), a novel benchmark for assessing machine physical commonsense. ContPhy complements existing physical reasoning benchmarks by encompassing the inference of diverse physical properties, such as mass and density, across various scenarios and predicting corresponding dynamics. We evaluated a range of AI models and found that they still struggle to achieve satisfactory performance on ContPhy, which shows that the current AI models still lack physical commonsense for the continuum, especially soft-bodies, and illustrates the value of the proposed dataset. We also introduce an oracle model (ContPRO) that marries the particle-based physical dynamic models with the recent large language models, which enjoy the advantages of both models, precise dynamic predictions, and interpretable reasoning. ContPhy aims to spur progress in perception and reasoning within diverse physical settings, narrowing the divide between human and machine intelligence in understanding the physical world. Project page: https://physical-reasoning-project.github.io

Abstract of ContPhy: Continuum Physical Concept Learning and Reasoning from Videos (arXiv:2402.06119, CC0)
Made by Zheng et al. (ContPhy team) Released Feb 2024 Physical prediction Last in a launch post Apr 2026 , dropped before it saturated Last model added Jun 2026
Level
Everyday Most adults, without training
Scored
Checked automatically A program checks the result against an answer key, unit tests or the expected final state.
Answers
Multiple choice
3
Models scored in lab cards
1
Launch post lists it, from 1 lab
2
System cards report it, from 1 lab

Seed2.0 Pro leads with 67.4% among models released by Jun 2026

Best score per model as labs report them in their own cards. Labs pick their own settings, so these compare less cleanly than independent runs.

The newest model with a score here came out in Jun 2026, and nobody has reported a newer one. Among the 20 highest-ranked models on the capability index, these have no score yet:

  1. 1 Seed2.0 Pro 67.4%
  2. 2 Seed2.1 Pro 63.6%
  3. 3 Seed2.0 Lite (0428) 62.4%
#ModelScoreSettingDateSource
1 Seed2.0 Pro 67.4% Feb 2026 Model card
2 Seed2.1 Pro 63.6% Jun 2026 Model card
3 Seed2.0 Lite (0428) 62.4% Apr 2026 Model card

Number one over time

Lab claims count from the day the card came out, independent runs from the model’s release.

ByteDance Seed
Lab claims Not tested since Jun 2026
Seed2.0 Pro 67.4%

Scores over time

All the scores we have, one dot each, so a model tested at several settings appears more than once.

Reported by the lab in its model card
0% 20% 40% 60% 80% 100% 2026 Near the ceiling (85%) Seed2.0 Pro 0% 20% 40% 60% 80% 100% 2026 Near the ceiling (85%) Seed2.0 Pro

Labs headline it less often now, last in Apr 2026

Launch posts from every lab that has listed it, one tick per post. Tall colored ticks include it, and short gray ones leave it out.

ByteDance Seed
DateLaunch postScoreAs the post writes it
28 Apr 2026 Seed2.0 Lite (0428) 62.4 ContPhy

2 system cards report it, from 1 lab

Besides launch posts, we read the system cards, model cards and technical reports labs publish with a release. They report far more, including safety and frontier-risk tests.

DateDocumentScoreAs the document writes itSection
23 Jun 2026 Seed2.1 Pro model card 63.6 ContPhy (Table 10) Capabilities
14 Feb 2026 Seed2.0 Pro model card 67.4 ContPhy (Table 9) Capabilities

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