DeepSeek-R1 and Local LLMs are completely breaking the detection algorithms

Here’s something interesting from a technical standpoint: Turnitin's detection models were mostly trained on patterns from ChatGPT (GPT-3.5/4/4o) and basic Claude models.

Now that students are running local models like DeepSeek-R1, Llama 3, or customized open-weight models on their own GPUs, the text patterns don't match OpenAI's token signatures at all. The software is flagging original human writing from formal students while completely missing outputs from local open-source models. The system is fundamentally broken.