Pencil Puzzle Bench - Hitori: leaderboard
Models shade Hitori duplicates so each row and column has unique visible numbers, shaded cells stay apart, and open cells connect. Direct-ask exact success fraction for 15fixed golden-300 puzzles of this type; archived DirectAskStrategy_05aaaac9, latest record per source model and puzzle. No agentic or revised strategy cohort mixed.
Metric: Direct-ask Success Rate (%). Source: ppbench.com. Saturation forecast: Around January 2027. 51 models tracked.
Top models
| # | Model | Score | Overall rank |
|---|---|---|---|
| 1 | Claude Opus 4.6 (Thinking) | 66.67 | #63 (Claude Opus 4.6) |
| 2 | Gemini 3.1 Pro (Preview) | 40 | #58 |
| 3 | Claude Opus 4.5 (Thinking) | 40 | #83 (Claude Opus 4.5) |
| 4 | Claude Sonnet 4.6 (Thinking) | 33.33 | #90 (Claude Sonnet 4.6) |
| 5 | GPT-5.2 (xHigh) | 33.33 | #110 (GPT-5.2) |
| 6 | Grok 4.1 Fast | 26.67 | #217 |
| 7 | GPT-5.2 Pro | 26.67 | #61 |
| 8 | DeepSeek V3.2 | 20 | #205 |
| 9 | Gemini 3 Pro | 20 | #80 |
| 10 | GPT-5.2 (High) | 20 | #110 (GPT-5.2) |
| 11 | GPT-5.1 (Medium) | 20 | #135 (GPT-5.1) |
| 12 | Gemini 3 Flash (Minimal) | 20 | #99 (Gemini 3 Flash) |
| 13 | Kimi K2.5 | 13.33 | #144 |
| 14 | Claude Sonnet 4.5 (Thinking) | 13.33 | #142 (Claude Sonnet 4.5) |
| 15 | O3 | 13.33 | #124 |
No result here: #3 Claude Opus 5.5, #6 GPT-6 Astra, #7 GPT-6.1 Sol.
Interactive version: theaggregate.ai/benchmark?slug=pencil-puzzle-bench-hitori · How It Works · Data refreshed daily, snapshot 2026-10-20.