Reflection AI Open-Sources Beam’s Weights, Post-Training Recipes

Reflection AI Releases Beam, Becomes Second-Best US Open Model On Artificial Analysis Intelligence Index

The US appears to be making some inroads into the open model space, which was thus far largely dominated by China. Reflection AI,...

Reflection AI Releases Beam Weights With Post-Training Workflows

Beam has 501.3 billion total parameters, supports a one-million-token context window and includes a separate speculative-decoding drafter.

Reflection's Beam aims to undercut Chinese open models with fewer tokens, not cheaper tokens

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Reflection AI open-sources Beam’s weights, post-training recipes

Startup Reflection AI Inc. today made the weights of Beam, its first large language model, available on Hugging Face. The company also released technical resources that will enable developers to customize the algorithm. Originally introduced last week, Beam is one of the industry’s most advanced open-source LLMs. It features about 500 billion parameters, yet approaches […]

Reflection Beam: What To Measure Before You Run A Coding Agent » Saipien

Reflection Beam is an open-weight model for agentic coding: a 501-billion-parameter mixture-of-experts system that, according to AWS’s deployment guide, keeps 23 billion parameters active per token. It is being offered for private, multi-step software work under your own runtime and data boundary. It is not offered as the model that tops every chart. A mixture-of-experts […]