Agent Arena Pareto frontier: OpenAI holds 7 of 11 spots, including GPT-6 Astra Max
OpenAI's Luna, Sol and GPT-6 Astra (Max) together hold 7 of 11 Pareto-optimal spots on Agent Arena; Luna dominates under $0.10 per task and Sol covers $0.22–0.65.

GPT-6 Luna and GPT-6.1 Sol by @OpenAI now hold 6 of the 11 spots on the Agent Arena Pareto frontier across their reasoning efforts! - GPT-6 Luna dominates below $0.10/task, claiming 3 of the 4 optimal spots with Max, Medium and Low. - GPT-6.1 Sol sets the frontier between $0.22 and $0.65/task, with the same reasoning levels on it too. This shows why test-time scaling matters. Sometimes the best move is to switch the reasoning effort, not the model, to stay at the optimal cost/performance point. With GPT-6 Astra (Max) also on the Pareto frontier, OpenAI models hold 7 of the 11 frontier spots with multiple reasoning levels. Congrats to the @OpenAI team!
This post quotes another post: x.com/arena/status/2104709550163325201