OpenAI Claims GPT-6 Sol Beats Claude Opus 5 at 9% of Cost

OpenAI said GPT-6 Sol at xhigh effort outperforms Claude Opus 5 at max effort on AutomationBench at 9% of Opus 5's cost per task. The claim, posted Sept. 16 alongside GPT-6 Sol and Luna, pairs reasoning effort with cost per task for agentic workloads.