New MDArena benchmark reveals coding agents' limitations in molecular dynamics

Researchers have introduced MDArena, a new benchmark designed to evaluate the capabilities of coding agents on realistic molecular dynamics (MD) workflows. The benchmark consists of 50 containerized tasks drawn from active biomolecular simulation projects, covering areas like trajectory analysis and system preparation. In evaluations, Codex GPT-5.5 demonstrated the strongest performance, achieving 48% Strict-Pass@1 successes, followed closely by OpenCode Gemini Flash 3.5. Despite partial progress, current coding agents still struggle with complex tasks, highlighting a gap between their utility as assistants and their reliability as autonomous researchers. AI

IMPACT Highlights the need for more robust AI agents in scientific research, particularly for complex simulation tasks.

RANK_REASON The cluster describes a new benchmark for evaluating AI models on scientific tasks, which falls under research. [lever_c_demoted from research: ic=1 ai=1.0]

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• Codex GPT-5.5
• coding agents
• free-energy protocols
• MDArena
• membrane protein
• molecular dynamics simulation
• OpenCode Gemini Flash 3.5

• paper
• product

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