Reflection previews Beam with open weights planned this month
Early access is limited while Reflection completes safety evaluations.
Reflection announced Beam on October 5, describing a model for coding, reasoning and agentic work with 501 billion total parameters and 23 billion active parameters.
The company says a select group can use an early version and others can join a waitlist. Final safety evaluations are ongoing. It plans to release Apache 2.0 weights, a technical report and model card later this month.
What developers can see
Reflection’s beta documentation lists a 256K context window and 128K maximum output, alongside reasoning, tool calling and structured outputs. These published specifications do not establish unrestricted access.
Related coverage examines Aleph Alpha’s Kolibri release.
Archival hardware photograph by Yogendra Singh on Pexels under the Pexels License. Taken June 25, 2020. It does not show Reflection’s equipment. Converted to WebP by the site.
[…] also covered Reflection’s limited Beam preview, whose announcement separately described planned future weight […]