Running in Mirror, Reflection's open-source CLI harness, Beam scores 28 on the Artificial Analysis Coding Agent Index. It sits 15 points behind the next setup, Claude Code with Qwen3.8 Max (43), and 40 behind the leaders (68). It is, however, frugal: only Codex with GPT-6 Astra and Codex with GPT-6.1 Sol use fewer tokens
Beam scores 28 on Artificial Analysis Coding Agent Index in Mirror harness
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Artificial Analysis says Beam, running in Mirror, Reflection's open-source CLI harness, scores 28 on its Coding Agent Index. That is 15 points behind Claude Code with Qwen3.8 Max (43) and 40 points behind the leaders (68). Only Codex with GPT-6 Astra and Codex with GPT-6.1 Sol use fewer tokens.
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Source: Artificial Analysis · x.comPublished