Introducing Reflection Beam: an open-weight model for agentic coding on AWS
Reflection AI launches Beam, a 501B-parameter open-weight agentic coding model on AWS
Reflection AI has released Beam, an open-weight sparse mixture-of-experts model with 501B total and 23B active parameters, targeting agentic coding and long-horizon software engineering tasks. The model ships under Apache 2.0 via Hugging Face and is deployable on AWS SageMaker JumpStart and HyperPod Inference. While notable as a large open-weight coding model, the announcement is primarily a deployment tutorial and lacks benchmark data or competitive positioning details.