Welcome Beam: a 501B open model you can own, customize, and scale
Source
huggingface.co
Date
Why it matters
An Apache 2.0 coding and AI agentAn AI system that doesn't just answer once but works toward a goal in a loop — taking actions, reading the results, and deciding what to do next.Full definition → model with 1M context windowThe maximum amount of text a model can consider at once — its working memory for the current conversation or task.Full definition → can be self-hosted, fine-tuned, and run with RL. Day-0 transformers, vLLM and SGLang support plus SFT/GRPO recipes make it usable immediately.
Terms in this piece · Glossary
mixture-of-experts — A model built from many specialist sub-networks where only a few activate per token, giving big-model capability at small-model running cost.
context window — The maximum amount of text a model can consider at once — its working memory for the current conversation or task.
inference — Running a trained model to get answers — the phase where AI is actually used, as opposed to trained.
AI agent — An AI system that doesn't just answer once but works toward a goal in a loop — taking actions, reading the results, and deciding what to do next.
