Key Info

Reflection AI released Beam across platforms with open weights under the Apache 2.0 license, in collaboration with an ecosystem of 40+ partners.

Highlights

  • Released weights, tokenizer, and reference implementation
  • Provides BF16, FP8, and NVFP4 weight variants plus a DFlash2 drafter
  • Open-sourced the harness used to build and train Beam: Mirror CLI
  • Weights and model card available on Hugging Face