Beam

3 stories

Beam can refer to two things: the open-weight model from Reflection AI, or the Erlang virtual machine, BEAM. Recent coverage centers on Reflection AI releasing its first open model, Beam, on Hugging Face: a 501B-parameter MoE with 23B active per token, a 1M-token context window, and an Apache 2.0 license, aimed at coding and agentic use, with day-0 support in transformers, SGLang, and vLLM. A separate story covers Imp, a port of DSPy to Elixir/BEAM.

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Reflection releases 501B open model Beam

New US lab Reflection released Beam, its first open model, on Hugging Face. The MoE model has 501B total parameters (23B active per token), a 1M-token context window, and an Apache 2.0 license. Aimed at coding and agentic use, it has day-0 support in transformers, SGLang and vLLM plus a Rust harness.

Hugging Face Blog ·

Imp: A Full Port of DSPy to the BEAM

Imp is a full port of DSPy to Elixir/BEAM that turns language-model calls into typed functions with signatures, modules, optimizers and agent loops, running agents as supervised OTP processes and auto-optimizing programs against labeled examples.

Hacker News ·
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