SDSignal Desk

Desk

AI

Broad artificial intelligence coverage.

AIOct 15, 2026Hugging Face

Reflection’s Beam arrives on Hugging Face as a 501B Apache 2.0 open model

Reflection’s first model, Beam, is a 501-billion-parameter mixture-of-experts with about 23 billion active per token, 1M context and an Apache 2.0 license, with day-zero support in transformers, vLLM and SGLang. Reflection reports 81.6% on SWE-bench Verified; outside reproductions are pending.