GPT-6 Luna Hits Agent Arena Pareto Frontier at $0.05 per Task

Agent Arena updated its cost-performance Pareto frontier based on over 2 million real agent sessions across 46 models, with OpenAI's GPT-6 Luna (Max) entering the frontier at +1.59% net improvement and a median cost of just $0.05 per task.

2026-09-29 ~ 2026-09-29 · 2 related posts

• Agent Arena: GPT-6 Luna hits Pareto frontier at $0.05/task, Claude Fable 5.1 leads at +14% — arena · 2026-09-29
• GPT-6 Luna (Max) lands on Agent Arena Pareto frontier at $0.05 median cost per task — arena · 2026-09-29