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Pangram – AI detector for text and images

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Why This Matters

Pangram introduces an AI text and image detector built on a standard language-model classifier architecture, trained on a curated dataset of human-written and AI-generated content. As AI-generated content proliferates online, tools like this matter for verifying authenticity in journalism, education, and content moderation, though their reliability and potential for false positives remain key concerns for the industry.

Key Takeaways

Our classifier uses a traditional language model architecture. It receives input text and tokenizes it. Then, the model turns each token into an embedding, which is a vector of numbers representing the meaning of each token. The input is passed through the neural network, producing an output vector. A classifier head transforms the output vector into a prediction of human, AI, or AI-assisted. We train an initial model on a small but diverse dataset of approximately 1 million documents composed of publicly licensed human-written text. The dataset also includes AI-generated text produced by GPT-5 and other frontier language models. The result of training is a neural network capable of reliably predicting whether text was authored by human or AI.