MathEd-PII (Segment-Aware Prompt): leaderboard
Metric: F1 (%) of PII span detection in the MathEd-PII benchmark: 1,000 U.S. math tutoring transcripts (115,620 messages) with 1,995 PII spans of 17 types replaced by realistic surrogates; each message is sent with the instruction to return every PII span and its type as JSON; F1 of exact span matches against the gold surrogates; the segment-aware prompt (each message carries a MATH or NON-MATH label from the authors' math-density segmentation); higher is better. Source: arxiv.org. Saturation forecast: Estimated already saturated. 3 models tracked.
Top models
| # | Model | Score | Overall rank |
|---|---|---|---|
| 1 | Gemini 3 Pro | 82.1 | #77 |
| 2 | Claude Opus 4.5 | 82 | #79 |
| 3 | GPT-5.2 | 75.8 | #105 |
No result here: #3 Claude Opus 5.5, #5 GPT-6 Astra, #8 Claude Fable 5.1.
Interactive version: theaggregate.ai/benchmark?slug=mathed-pii-segment-aware-prompt · How It Works · Data refreshed daily, snapshot 2026-10-11.