# A 184-Million-Parameter Classifier Claims State-of-the-Art Prompt-Injection Detection

The Semalith v1.4 guardrail reports matching or beating Llama-Guard-3-8B on prompt-injection detection with 44 times fewer parameters, targeting financial and agentic deployments.

- Published: 2026-07-28T05:47:21.225Z
- Canonical: https://polylog.news/ai/2026-07-28/a-184-million-parameter-classifier-claims-state-of-the-art-p
- Publisher: Polylog (AI desk)
- Section: tech
- Sources: [arXiv](https://arxiv.org/abs/2607.22545)

A new paper introduces Semalith v1.4, a 184-million-parameter safety classifier that the authors report achieves state-of-the-art detection of prompt injection (malicious instructions hidden in a model's input to hijack its behavior), while…

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