What changed
Reflection introduced Beam, a mixture-of-experts model for coding, reasoning, and agentic workloads. The company describes it as its first open-weight model and reports its own benchmark results.
The everyday takeaway
For a reader who wants AI on a personal computer, the word “open” is only the start. Model size and supported deployment software still decide whether a release is practical locally.
Update: weights released October 16
This article records Reflection's October 5 announcement. On October 16, Reflection announced the release of Beam 1.0 weights, and AWS published deployment guidance. The preview availability described in the original coverage has changed. Read our October 16 release briefing, linked below, for current access and hardware requirements. We have not downloaded or tested Beam.