Reflection Open-Sources Beam Weights, 501B Parameter MoE Licensed Under Apache 2.0
Reflection has released Beam, its first open-weight model, with weights now available on Hugging Face under the Apache 2.0 license. Beam is a sparse MoE model with 501 billion total parameters and 23 billion active parameters, designed for coding, reasoning, and long-horizon agent tasks. It offers weights in BF16, FP8, and NVFP4 precisions, along with a speculative decoding drafter model. Building on prior coverage of the model's launch, this update provides additional details on the open-source license and available weight precisions.
