# Pangram 4 发布：AI 文本检测误报率降至每 24，000 份文档一次

- 来源：The Decoder：AI News（RSS）
- 作者：Matthias Bastian
- 发布时间：2026-07-30 01:16
- AIHOT 分数：35
- AIHOT 链接：https://aihot.virxact.com/items/cms6cvlas02rprotz8fif0vzi
- 原文链接：https://the-decoder.com/pangram-says-its-new-ai-text-detector-makes-only-one-mistake-per-24000-documents

## AI 摘要

Pangram 推出新一代 AI 文本检测模型 Pangram 4，据其基准测试，能正确识别 99.66% 的 AI 文本，误报率仅为 0.0041%（约每 24,000 份文档一次错误）。新模型规模扩大 6 倍，误报率降低 14 倍，并能区分 AI 辅助润色与完全由 AI 生成的文本。API 价格为每 100 词 $0.05，所有套餐现可免费扫描图片。

## 正文

Pangram has introduced Pangram 4, a new model for detecting AI-generated text. According to the company’s own benchmarks, it correctly identifies 99.66 percent of all AI texts and falsely flags human-written texts as AI-generated in only 0.0041 percent of cases—which corresponds to about one error per 24,000 documents. According to the manufacturer, Pangram 4 is six times larger than its predecessor and produces 14 times fewer false positives and six times fewer missed AI texts than Pangram 3.

Pangram 4 can reportedly tell apart AI-assisted text from mixed human-AI writing. | Image: Pangram

Pangram 4 is also said to be able to distinguish between text that has been lightly polished by AI and text generated entirely by AI, and to be robust against tools designed to make AI-generated text sound more human: for 13 common "humanizers," the model detects the AI component in 98.83 percent of cases.

The API costs $0.05 per 100 words, which, depending on the document length, corresponds to a price increase of two to ten times. In addition, all plans can now scan images at no additional cost. Pangram 3 will continue to be supported for two more months and will be shut down on September 30, 2026.

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