Europe’s most prominent homegrown AI company just got a report card on propaganda resistance, and the grades are not great.
All four versions of Mistral AI’s models scored below 40% on a new benchmark designed to measure how well generative AI resists Russian disinformation narratives. The best-performing Mistral model managed to rank only 47th out of 60 AI systems tested, placing the French company firmly in the bottom third of the leaderboard.
What the benchmark actually tested
The study comes from Estonia’s Institute of the Estonian Language, known as EKI, which released its findings on June 16, 2026. Estonia, a small Baltic nation that shares a border with Russia and has dealt with Kremlin-linked information operations for decades, has a vested interest in understanding how AI handles propaganda.
The benchmark wasn’t a simple true-or-false quiz. EKI designed a framework of 75 questions spanning 14 different Russian propaganda themes. Those questions were delivered in three languages: English, Russian, and Estonian. The phrasing varied deliberately, mixing neutral, biased, and outright manipulative formulations to see how models responded under different levels of rhetorical pressure.
