Claude Opus 5 with Claude Code Achieves Perfect Score on ARC-AGI 3

Developers report achieving a 100% RHAE score on the ARC-AGI 3 public set using Claude Opus 5 with Claude Code and a single skill, with no extra tools. The key technique involves making falsifiable predictions.

2026-08-20 ~ 2026-08-20 · 2 related posts

• Claude Opus 5 + Claude Code + 1 Skill Scores 100% on ARC AGI 3 — Tolopono · 2026-08-20
• Claude Code + Opus 5 saturates ARC-AGI-3 via falsifiable predictions — scaling01 · 2026-08-20