# HemingwayAI model passes AI detectors 90% of the time in tests

Digest AI · Generative AI & Models · published 2026-10-29T09:27:19Z

Canonical: https://digestai.news/story/hemingwayai-model-passes-ai-detectors-90-of-the-time-in-tests

## Summary

A new model from an unnamed AI lab claims to evade detection 90% of the time, according to tests shared on Reddit. The model passed GPTZero 9 times in 10 and outperformed human writing in some categories, the lab reports. It was tested on 1,848 texts across 13 writing types, including product descriptions, blog posts, and emails, with no retries or edits. Real human writing passed detectors 86% of the time in the same tests.

The lab says the model is open-weight and free for non-commercial use under CC BY-NC 4.0. It is available as the default in a Mac, Windows, and Android app, as well as via an OpenAI-compatible API. The lab also provides code for local inference and fine-tuning. Commercial use requires a separate agreement, per the lab’s contact email.

## Key points

- Model passes AI detectors 90% of the time, outperforming human writing in some tests
- Available via app, API, and open weights for non-commercial use under CC BY-NC 4.0
- Tests included 1,848 texts across 13 writing types, with no retries or edits

## Why it matters

If accurate, this model could reduce detection risks for AI-generated content, benefiting writers and marketers who rely on undetectable text.

## Sources

1. [HemmingwayAI/Hemmingway-1.5 (Qwen finetune)](https://huggingface.co/HemmingwayAI/Hemmingway-1.5) (huggingface.co, 2026-10-29, primary source)

## Cite

Digest AI, "HemingwayAI model passes AI detectors 90% of the time in tests", 29 October 2026, https://digestai.news/story/hemingwayai-model-passes-ai-detectors-90-of-the-time-in-tests

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