Shieldstral
- URL: http://arxiv.org/abs/2607.25857v2
- Date: Tue, 04 Aug 2026 18:10:46 GMT
- Title: Shieldstral
- Abstract summary: Shieldstral is a policy-adaptive multimodal safety classifier that matches or outperforms models nearly 7$times$ its size on text safety benchmarks.<n>We present a data construction recipe, covering curation and generation of approximately 54.1M samples and a fine-grained evaluation set to evaluate policy adaptability.
- Score: 183.97744446582863
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: We introduce Shieldstral, a 3B-parameter policy-adaptive multimodal safety classifier that matches or outperforms models nearly 7$\times$ its size on text safety benchmarks and sets a new state of the art on multimodal safety classification. Shieldstral formulates content moderation as a binary question-answering task. This simple formulation unifies diverse moderation tasks into a single yes/no problem, enabling heterogeneous safety datasets with divergent taxonomies to be consolidated under one training framework. We present the data construction recipe, covering curation and generation of approximately 54.1M samples and a fine-grained evaluation set to evaluate policy adaptability. Together, these enable a small adaptive model to match or outperform much larger models.
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