CMRI's Lion-ER-35B-A3B: open embodied reasoning MoE lifts all 10 benchmarks at ~3B active params

量子位 · wechat · 2026-11-04

CMRI's Lion Mountain AI Lab released Lion-ER-35B-A3B, an open-source embodied reasoning VLM with a MoE architecture: 35B total parameters, 3B activated per token, weights on Hugging Face. Instead of blindly scaling robot data, the team built a capability-driven data engine: an 8-domain/39-skill capability blueprint, "capability compilation" into evidence-backed training questions, three supervised curation routes, and an eval-driven loop that turns model failures into targeted new data from a 4.3M-record pool (312K training samples). The model improves all 10 public benchmarks (65.29 avg score), beating its Qwen3.6 base by +9.30 on Where2Place and +12.12 on ERQA trajectory understanding, with gains on camera-motion, trajectory, cross-view spatial, and task-progress reasoning.

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