2 min read · Hugging Face Blog
Reflection Releases Beam, an Open 501B Mixture-of-Experts Coding Model
Reflection has published Beam, an open-source 501B Mixture-of-Experts model under Apache 2.0 with a 1M token context window. Activating 23B parameters per token, it offers day-0 support across Hugging Face Transformers, vLLM, and SGLang.
Why it matters. Teams can now host and fine-tune an unrestricted, frontier-grade long-context coding model on their own infrastructure without SaaS API locks.