99% on ARC-AGI 3 (public eval, with harness)

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Angjoo Kanazawa (@akanazawa): "We got 99% on ARC-AGI-3 by instilling analysis-by-synthesis into AI models.

[Schema] is basically VIGA squared: do inverse graphics, then do it again one level up — inverse dynamics.

Super simple, surprisingly effective! Analysis by synthesis FTW!!!" | XCancel

Angjoo Kanazawa@akanazawa

1h

We got 99% on ARC-AGI-3 by instilling analysis-by-synthesis into AI models.

[Schema] is basically VIGA squared: do inverse graphics, then do it again one level up — inverse dynamics.

Super simple, surprisingly effective! Analysis by synthesis FTW!!!

Haven Feng

@HavenFeng

2h

Today, we’re introducing [schema]: a harness reaching 99% RHAE with Opus 4.8 + Fable 5 and 95.35% with GPT-5.6 Sol on ARC-AGI-3 Public set.

[schema] makes an LLM think like a physicist. 🧵

Jul 16, 2026 · 4:21 PM UTC

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Angjoo Kanazawa@akanazawa

2m

Huge congrats to the team!!!

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Suresh

@_Suresh2

36m

Replying to @akanazawa

the ablation to show is when the second stage changes VIGA's answer

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akanazawa analysis synthesis schema inverse angjoo

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