Fake news article flips 74%–82% LLM forecasts

Researchers found that publishing fabricated news articles can easily manipulate LLM-based forecasting systems. Once retrieved in the model's context, a single fake article reversed between 74% and 82% of opposing forecasts across tested frontier models, while average accuracy remained largely unchanged. Standard retrieval-time defenses failed to stop the attacks without disrupting genuine news processing. Open article →