Reflection releases Beam weights under Apache 2.0, plus its Mirror CLI coding harness
As of Oct 16, Beam (501B MoE, 23B active, 1M context) is on Hugging Face as reflection/Beam-1.0-501B-A23B under Apache 2.0, with day-0 Transformers, SGLang, and vLLM support and a free-to-start API at platform.reflection.ai. Reflection also shipped Mirror CLI in beta, the terminal harness Beam was trained with, which runs parallel agents in separate worktrees and supports MCP, skills, and tool-call approval.