Reflection AI Open-Sources Full Beam 1.0 Customization Recipes

Reflection AI has released complete, reproducible customization recipes for its open-weight Beam 1.0 (501B MoE), covering the full pipeline from LoRA to GRPO RL post-training, including data, configs, scripts, hardware, and timing details.

2026-10-21 ~ 2026-10-22 · 2 related posts

• Reflection AI open-sources RL post-training recipes for Beam 1.0, a 501B MoE with 23B active params — ying11231 · 2026-10-21
• Reflection ships open Beam customization recipes spanning LoRA, SFT and GRPO RL — HowDevelop · 2026-10-22