Arena.ai· @arena · X·· 3 小时前AI 评分60
AI 导读
Arena 宣布 Reflection AI 的 Beam-1.0-501B-A23B 登上 Agent Arena 榜单，Reflection AI 因此进入 Agent Arena 前 15 实验室。该模型在开源模型中排第 12（Net Improvement -3.67%，误差 ±3.84%），是美国开源模型中排名最高的，在美国实验室中排第 6、总榜第 13；在 Code Arena: WebDev 的开源模型中排第 22（1438 分），同为前 25 中唯一非中国实验室的开源模型，权重以 Apache 2.0 完全开放。
正文
Beam-1.0-501B-A23B just landed in the Agent Arena. With this release, @Reflection_AI is now in the Agent Arena top 15 labs!
Among US labs, Beam-1.0-501B-A23B is #6, and overall is #13.
Congrats to the team at @Reflection_AI on this contribution to the open-source ecosystem!
Exciting news: Beam-1.0-501B-A23B by @Reflection_AI just landed #12 among open weight models in Agent Arena with -3.67% Net Improvement, and #22 among open in Code Arena: WebDev with 1438 pts. It’s also fully open under Apache 2.0. On the Agent Arena leaderboard, Beam 1.0 is the top-ranked US model among open models, landing at #12. That puts it ahead of Hy3, MiMo V2.5 Pro and MiniMax M3. Its margin of error is wide (±3.84% on Net Improvement), so it’s statistically closer to the two Qwen3.8 models just above it than its rank suggests. On Code Arena: WebDev, 24 of the top 25 open models come from Chinese labs. The one exception is Reflection’s Beam 1.0 (Apache 2.0). It ranks #22 among open models, which makes it the top US open model on the board, just ahead of Kimi K2.5 Thinking and GLM-5. Congrats to the @Reflection_AI team on this solid open weights release!在 X 查看被引用的帖子
来源：Arena.ai · x.com