Reflection Introduces Beam, a 501B Open-Weight Model, Apache 2.0 Weights Later This Month
On October 5, 2026, Reflection introduced Beam, its first open-weight model: a sparse Mixture-of-Experts with 501 billion total parameters and 23 billion active, built for coding, reasoning, and agentic workloads. Weights are not out. The post says Beam is in…