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Athena

https://birefringent-ai.com/athena/
Item media 1 (screenshot) for Athena

Overview

Athena is a fully open-source AI detector trained on 25,180 samples of human text and 35,254 samples of AI-generated text from a…

Athena is a fully open-source AI detector trained on 25,180 samples of human text and 35,254 samples of AI-generated text from a variety of large language models. It started as a research project looking into whether subtle patterns occurring in AI-generated text could be used to estimate a probability that a text was AI generated. Athena was tested on six datasets, covering the topics: politics, sports, culture, lifestyle, opinion and science, with a total of 49,480 text samples ranging from about 100 words to about 400 words in length. Athena achieved an average sensitivity of 98.0% (i.e. 98.0% of human texts were correctly identified), and a recall of 98.7% on text produced by GPT (i.e. 98.7% of GPT-generated texts were correctly identified), 95.9% on Gemini, 94.6% on Deepseek-v3, and 93.7% Claude Haiku, and results ranged for Claude Sonnet, Deepseek-r1, Llama and Mistral. The results of the model evaluation are available on an interactive platform at the web portal: https://birefringent-ai.com/athena, which also contains a short course on large language models and the mechanisms behind AI text generation. For a deep dive into Athena's creation and testing, take a look at my articles on medium.com: https://medium.com/@tomrodolfolee/building-an-ai-detector-from-scratch-part-i-db72bc2bdadb. The full source, train and test data are available at https://github.com/tommyliphysics/athena-source

Details

  • Version
    1.1
  • Updated
    July 2, 2025
  • Size
    30.92KiB
  • Languages
    English
  • Developer
    Website
    Email
    tommyliphys@gmail.com
  • Non-trader
    This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

The developer has disclosed that it will not collect or use your data.

This developer declares that your data is

  • Not being sold to third parties, outside of the approved use cases
  • Not being used or transferred for purposes that are unrelated to the item's core functionality
  • Not being used or transferred to determine creditworthiness or for lending purposes

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