Reflection released the weights of Beam, its first open-weight model, on Hugging Face under an Apache 2.0 license; Beam is a sparse Mixture-of-Experts model with 501 billion total parameters and 23 billion active, built for coding, reasoning, and long-horizon agentic workloads. Previously the model was reachable only through Reflection and its partners, and developers can now download and self-host it, evaluate it, and customize it for their own domains. The release ships with final benchmarks in the model card and a safety technical report, plus an ecosystem of over 40 partners and integrations spanning inference, quantization, fine-tuning, reinforcement learning, agent harnesses, evaluation, and observability, which Reflection calls an open operating system for agents.
Reflection released the weights of Beam, its first open-weight model, on Hugging Face under an Apache 2.0 license; Beam is a sparse Mixture-of-Experts model with 501 billion total parameters and 23 billion active, built for coding, reasoning, and long-horizon agentic workloads. Previously the model was reachable only through Reflection and its partners, and developers can now download and self-host it, evaluate it, and customize it for their own domains. The release ships with final benchmarks in the model card and a safety technical report, plus an ecosystem of over 40 partners and integrations spanning inference, quantization, fine-tuning, reinforcement learning, agent harnesses, evaluation, and observability, which Reflection calls an open operating system for agents.