# Stealthiness Evaluation on LLaMA Guard 2 8B Source: [Stealthiness Evaluation on LLaMA Guard 2 8B]() Collection index: [llms.txt]() Data updated: 2026-05-18T09:28:34.720Z Evaluation of model stealthiness performance using the LLaMA Guard 2 8B dataset, measured by Perplexity metrics (PPL Mean and PPL Std). A research result applies to its stated dataset, split, metric and evaluation configuration. Compare like-for-like settings, preserve the metric's unit and direction, and distinguish paper-reported results from independent reproduction. The best result recorded here is not a claim of exhaustive, current global coverage. | Scope | Recorded value | | --- | --- | | Task | Stealthiness Evaluation | | Dataset (including any stated split) | LLaMA Guard 2 8B | | Metric | PPL Mean | | Unit | SCALAR | | Direction | Lower is better | | Results loaded | 10 of 10 | | Coverage | All results currently returned for this benchmark | Evaluation settings may differ between results. The original papers and recorded configurations are needed to establish comparability. A shared metric name alone does not establish an identical protocol. ## Metrics - [PPL Mean](): Lower is better; unit: SCALAR. - [PPL Std](): Lower is better; unit: SCALAR. ## Recorded results | Method | PPL Mean | Result date | Report paper | | --- | --- | --- | --- | | ArtPrompt | 2.34 | Not recorded | 68fa751a1e209131cea65ca8 | | Ascii | 7.25 | Not recorded | 68fa751a1e209131cea65ca8 | | Base64 | 9.78 | Not recorded | 68fa751a1e209131cea65ca8 | | Morse Cipher | 16.78 | Not recorded | 68fa751a1e209131cea65ca8 | | ReNeLLM | 21.13 | Not recorded | 68fa751a1e209131cea65ca8 | | Unicode | 35.25 | Not recorded | 68fa751a1e209131cea65ca8 | | UTF-8 | 35.25 | Not recorded | 68fa751a1e209131cea65ca8 | | Origin | 41.81 | Not recorded | 68fa751a1e209131cea65ca8 | | Caesar Cipher | 192.17 | Not recorded | 68fa751a1e209131cea65ca8 | | FlipAttack | 909.42 | Not recorded | 68fa751a1e209131cea65ca8 | ### ArtPrompt PPL Mean: 2.34. Result ID: 6a0adb6a47f34ce924f14eed. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: Not recorded. This record does not assert independent reproduction. ### Ascii PPL Mean: 7.25. Result ID: 6a0adb6a47f34ce924f14eeb. [Reporting paper]() Recorded evaluation configuration: Not recorded. This record does not assert independent reproduction. ### Base64 PPL Mean: 9.78. Result ID: 6a0adb6a47f34ce924f14eec. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: Not recorded. This record does not assert independent reproduction. ### Morse Cipher PPL Mean: 16.78. Result ID: 6a0adb6a47f34ce924f14ee9. [Reporting paper]() Recorded evaluation configuration: Not recorded. This record does not assert independent reproduction. ### ReNeLLM PPL Mean: 21.13. Result ID: 6a0adb6a47f34ce924f14eee. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: Not recorded. This record does not assert independent reproduction. ### Unicode PPL Mean: 35.25. Result ID: 6a0adb6a47f34ce924f14ee8. [Reporting paper]() Recorded evaluation configuration: Not recorded. This record does not assert independent reproduction. ### UTF-8 PPL Mean: 35.25. Result ID: 6a0adb6a47f34ce924f14eea. [Reporting paper]() Recorded evaluation configuration: Not recorded. This record does not assert independent reproduction. ### Origin PPL Mean: 41.81. Result ID: 6a0adb6a47f34ce924f14ee6. [Reporting paper]() Recorded evaluation configuration: Not recorded. This record does not assert independent reproduction. ### Caesar Cipher PPL Mean: 192.17. Result ID: 6a0adb6a47f34ce924f14ee7. [Reporting paper]() Recorded evaluation configuration: Not recorded. This record does not assert independent reproduction. ### FlipAttack PPL Mean: 909.42. Result ID: 6a0adb6a47f34ce924f14eef. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: Not recorded. This record does not assert independent reproduction. Page 1 of 1. This is an index page, not the full collection.