Meta Muse Spark Open tops Plotly 2026 data analysis exam

Plotly tested eleven U.S. open-weight models on a 43-question data analysis exam, finding that Meta's Muse Spark Open scored the highest at 38 out of 43. U.S. open-weight models generally trailed Chinese models, which scored up to 42 and excelled at finding hidden data patterns. OpenAI's gpt-oss-120b was identified as the cheapest and fastest model tested, while Meta's Muse Glimmer 30B was noted as the top-performing model small enough to run on a standard desktop. Open article →