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Pii Masking

Frontier

Evaluates models' ability to identify and mask personally identifiable information in text

Domain
rl-env
License
unknown
Published
Oct 2025

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Attribution

Leaderboard scores
prime-hub
Attribution policy →

Top score 0.0% by GPT-5 Nano - 5 models reporting (3 frontier)

Score history

3
0%25%50%75%100%Aug 25Sep 25GPT-5 Nano

Top models

5
Pii MaskingBar chart with 5 bars. Highest value: Qwen3 4B Instruct at 63.
5 models

Related tools

1
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Implementations, trainers, datasets and scaffolds linked to this eval.

FAQ

What is Pii Masking?
Evaluates models' ability to identify and mask personally identifiable information in text
What is the current top score on Pii Masking?
The top reported score is 0.0% by GPT-5 Nano, across 5 models reporting (3 from frontier labs).
How can a model improve its Pii Masking score?
Tools linked to Pii Masking on Sophon include PII Masking RL Env (Community) - RL environments, datasets, and scaffolds that target this eval.
What license is Pii Masking under?
Pii Masking is available under unknown.