Model Card: Reflection Beam 1.0
Reflection Beam 1.0: a 501.3B-total/23.4B-active MoE, teased 2026-10-05 and shipped with open weights (Apache 2.0) on 2026-10-16, with a 1M-token context. It scores 81.6% on SWE-bench Verified (BF16), 80.1% on Terminal-Bench 2.1, and 97.7% on AIME 2026. Together AI hosts it at $0.40 input / $1.20 output per million tokens (cached input $0.04). Reflection positions Beam as a Western open-weight agentic-coding model on par with GLM 5.2 and closing in on Qwen 3.8 Max, though it still trails Kimi K3 on raw capability — its edge is reasoning-token efficiency.