"Claude Opus 5 from @AnthropicAI is the new SOTA on ARC-AGI-3: 30.2% The previous high score (7.8%) was set by GPT-5.6 Sol (Max) Throughout our analysis, we observed novel behavior that allows Opus 5 to solve previously unbeaten environments, outperforming Fable"
In our testing to date, Anthropic’s Fable-class models score approximately 20% on the ARC-AGI-3 Public Demo environments
Claude Opus 5 reaches 30.2%, materially outperforming Fable
Our analysis suggests the gain comes from stronger logical reasoning, which enables more Claude Opus 5 was able to score 100% on 5 previously unbeaten environments
Of these, it was able to beat 4 of them matching or surpassing human level efficiency
Newly beaten environments: ar25, ft09, lp85, r11l, s5i5
6 of the 25 public demo environments have now been solved During our analysis of Opus 5, we observed a new capability previously unseen from frontier models
Opus 5 used advanced logical reasoning to turn ARC-AGI-3 layouts into algebraic notation. On action 23 it described the scene as "4_center = 2×axis − 5_center"
This is the first ARC-AGI-2
Claude Opus 5 scores 90.4% for $2.06/task
This is competitive with previous SOTA performance for slightly higher cost ARC-AGI-1
Claude Opus 5 scores 97.5% for $0.70/task
This is competitive with previous SOTA performance for slightly higher cost — ARC Prize