OpenAI GPT-6 Series Dominates Half of Agent Arena Frontier

1 reports archived1 independent sourcesupdated 10/21/2026, 01:42:01

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OpenAI's GPT-6 Luna and GPT-6.1 Sol occupy 6 of the 11 spots on the Agent Arena Pareto frontier, demonstrating superior performance across distinct cost tiers. The data highlights that adjusting reasoning effort levels, rather than switching models, is often the optimal strategy for maintaining cost-performance efficiency.

LATEST/OpenAI's GPT-6 Luna and GPT-6.1 Sol occupy 6 of the 11 spots on the Agent Arena Pareto frontier, demonstrating superior performance across distinct cost tiers. The data highlights that adjusting reasoning effort levels, rather than switching models, is often the optimal strategy for maintaining cost-performance efficiency.

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Arena.ai (@arena)T1·Oct 21, 01:4278 pts
OpenAI GPT-6 Series Dominates Half of Agent Arena Frontier
- GPT-6 Luna dominates the sub-$0.10/task tier, costing 29% less than DeepSeek-V4.1-Flash.
- GPT-6.1 Sol defines the performance frontier between $0.22 and $0.65 per task.
- Test-time scaling indicates that switching reasoning effort levels within the same model optimizes cost-performance better than swapping models.
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