# AI-generated text detection on Lang8 (test) Source: [AI-generated text detection on Lang8 (test)]() Collection index: [llms.txt]() Data updated: 2026-02-26T05:29:35.476Z Evaluation of models designed to detect AI-generated text using the test split of the Lang8 dataset, typically measured by Accuracy. 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 | AI-generated text detection | | Dataset (including any stated split) | Lang8 (test) | | Metric | Accuracy | | Unit | PERCENT | | Direction | Higher is better | | Results loaded | 5 of 5 | | 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 - [Accuracy](): Higher is better; unit: PERCENT. ## Recorded results | Method | Accuracy | Result date | Report paper | | --- | --- | --- | --- | | GPTZero | 99.2 | Not recorded | 68fa72d61e209131cea58d2e | | Perplexity only | 98.6 | Not recorded | 68fa72d61e209131cea58d2e | | DetectGPT | 98.6 | Not recorded | 68fa72d61e209131cea58d2e | | ROBERTa | 98.6 | Not recorded | 68fa72d61e209131cea58d2e | | Ghostbuster | 95.5 | Not recorded | 68fa72d61e209131cea58d2e | ### GPTZero Accuracy: 99.2. Result ID: 6992805d3a6c3148490f6282. [Reporting paper]() Recorded evaluation configuration: Not recorded. This record does not assert independent reproduction. ### Perplexity only Accuracy: 98.6. Result ID: 6992805d3a6c3148490f6280. [Reporting paper]() Recorded evaluation configuration: Not recorded. This record does not assert independent reproduction. ### DetectGPT Accuracy: 98.6. Result ID: 6992805d3a6c3148490f6281. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: Not recorded. This record does not assert independent reproduction. ### ROBERTa Accuracy: 98.6. Result ID: 6992805d3a6c3148490f6283. [Reporting paper]() Recorded evaluation configuration: {"trained on three domains":true}. This record does not assert independent reproduction. ### Ghostbuster Accuracy: 95.5. Result ID: 6992805d3a6c3148490f6284. [Reporting paper]() [Method origin paper]() [Implementation]() Recorded evaluation configuration: {"trained on three domains":true}. This record does not assert independent reproduction. Page 1 of 1. This is an index page, not the full collection.