Claude Fable 5.1 (Max) 登顶 Agent Arena:#1 性能 + 重塑价格-性能 Pareto 前沿
"Claude Fable 5.1 (Max) by @AnthropicAI has landed in the Agent Arena at #1! At a $4.14 median cost per task and a +15.8% net improvement, it has reshaped the Pareto frontier! ... Users are praising it around 2x more often than the next top model."
基于 6.7k+ 真实 agentic 会话数据,Fable 5.1 在隐式用户情绪(Praise vs. Complaint +42.5%)和显式确认成功(+22.4%)上大幅领先,且无 Tool Hallucination 问题。对 agent 开发者而言,这是目前 Arena 中性价比与效果平衡的最佳选择之一,但 $4.14/任务的成本也意味着需要评估预算。关注后续 GPT-6 Astra 的对比数据。