[AINews] Reflection Beam - 501B-A23B American Open Model latent.space

Reflection has launched Beam, a text-only, 501-billion-parameter mixture-of-experts model with 23 billion active parameters, trained from scratch for coding, agentic and scientific tasks. The company says training used 23.8 trillion tokens and reports an 80.9 score on SWE-bench Verified; it plans to release the full weights under Apache 2.0 this month.