Reflection Releases Beam’s Open Weights Under Apache 2.0 License

Reflection released Beam, a 501B-parameter mixture-of-experts model, as open weights under Apache 2.0 on Hugging Face on October 16, 2026, with broad platform support and detailed safety documentation. Beam was pretrained on 23.8 trillion tokens and refined via extensive reinforcement learning, now supported by over 40 partners including major cloud providers and optimized for various precision formats.