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Reflection AI Launches Beam, Now on Hugging Face

Reflection AI released Beam 1.0, its first open-weight model, on Hugging Face, built for coding, reasoning, and agentic tasks. The release includes four variants: Beam-1.0-501B-A23B and its FP8 version at 501B parameters, an NVFP4 version at 255B, and a 2B DFlash2 build.

read1 min views3 publishedOct 16, 2026
Reflection AI Launches Beam, Now on Hugging Face
Image: Hugging Face Blog

Beam 1.0 Reflection’s first open-weight model, built for coding, reasoning, and agentic tasks reflection/Beam-1.0-501B-A23B Text Generation • 501B • Updated about 1 hour ago • 440 • 34 reflection/Beam-1.0-501B-A23B-FP8 Text Generation • 501B • Updated about 2 hours ago • 603 • 10 reflection/Beam-1.0-501B-A23B-NVFP4 Text Generation • 255B • Updated about 2 hours ago • 864 • 13 reflection/Beam-1.0-501B-A23B-DFlash2 2B • Updated about 1 hour ago • 141 • 10

Beam 1.0 Reflection’s first open-weight model, built for coding, reasoning, and agentic tasks reflection/Beam-1.0-501B-A23B Text Generation • 501B • Updated about 1 hour ago • 440 • 34 reflection/Beam-1.0-501B-A23B-FP8 Text Generation • 501B • Updated about 2 hours ago • 603 • 10 reflection/Beam-1.0-501B-A23B-NVFP4 Text Generation • 255B • Updated about 2 hours ago • 864 • 13 reflection/Beam-1.0-501B-A23B-DFlash2 2B • Updated about 1 hour ago • 141 • 10

source & further reading
huggingface.co — original article Trloom: run TRL trainers (SFT, DPO, GRPO) from one YAML config Looking for feedback and testers for Stepfork, an open-source AI agent testing tool Timestral open weight timeseries foundation models from Mistral
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