Agent Arena 数据：开源模型 12 周追平 Claude Fable 5
July's most reliable AI agent is now just average. With Agent Arena, people delegate real tasks to ...
LMArena 给出实测数据：Kimi K3 和 DeepSeek V4.1 Flash 用不到一成的成本追平了 Claude Fable 5，做 agent 选型前可以看看这份榜单。
LMArena 的 Agent Arena 用用户确认的 Confirmed Success 信号评估智能体。7 月 1 日时 Claude Fable 5 领先所有模型，仅 12 周后 Top 20 模型的平均分就追平了它。Kimi K3 在 3 周内超过它，单任务成本低 89%；DeepSeek V4.1 Flash 也已追平，成本低 96%。目前 Top 5 的任务确认完成率达 94%，高于 7 月的 80%，由 Claude Opus 5.5、Claude Fable 5.1 和 GPT-6.1 Sol 领跑。
July's most reliable AI agent is now just average. With Agent Arena, people delegate real tasks to ...
July's most reliable AI agent is now just average. With Agent Arena, people delegate real tasks to agents and confirm whether the result met their needs. We call this signal Confirmed Success. On 1 July, Claude Fable 5 was well ahead of every other model, and it only took 12 weeks for the top‑20 average to match it. Kimi K3 beat it within just 3 weeks at 89% lower cost per task, and DeepSeek V4.1 Flash now matches it at 96% lower cost. Meanwhile, the top 5 now get 94% of tasks confirmed done, up from 80% in July, led by Claude Opus 5.5, Claude Fable 5.1 and GPT‑6.1 Sol. Today's leaders won't stay on top for long. Track Confirmed Success and our other agent signals live at the link in thread. 💬 18 🔄 5 ❤️ 75 👀 6632 📊 25 ⚡