Nanbeige4.3-33B is a 33B Apache-2.0 model for coding and office agents, and its own card reports 80.9 on Terminal-Bench 2.1
AspireAI community · Nanbeige LLM Lab (Hugging Face)
Nanbeige's LLM Lab published Nanbeige4.3-33B on Hugging Face on October 24 as the flagship teacher model for its 4.3 series: a roughly 33.1B-parameter model released under Apache 2.0 with up to 524,288 tokens of context, built for complex coding and professional cowork tasks and served through Transformers, SGLang or vLLM. In Nanbeige's own comparison table, using the same harness and inference settings, it reports 80.9 on Terminal-Bench 2.1 and 65.5 on DeepSWE against 73.0 and 42.5 for Qwen3.8-27B, plus 54.2 on Automation Bench and 44.8 on JobBench for cowork work. The same card also shows where it loses: Qwen3.8-27B is ahead on SWE-Bench Pro, and Gemma4-31B on GPQA Diamond. No independent rerun exists yet, so these are the publisher's numbers rather than an established ranking.
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Two sparse-autoencoder analyses have resisted scaling: matching semantically similar features across layers, and compressing large feature circuits into interpretable supernodes. This paper argues both are the same underlying problem, estimating semantic distances between SAE features that sit on different activation manifolds. Its representation treats each feature not as a single decoder vector but as an activation-weighted distribution over the hidden states expressing it, projects those distributions into a shared reference space, and compares them with Wasserstein distance. The representation is proved invariant to activation rescaling and stable under perturbation, and recovers true matches under finite-sample margin conditions. Empirically it outperformed decoder-vector and LLM-based baselines and captured subtle functional distinctions between related features, and it compressed large feature circuits into interpretable supernodes automatically. The limitation is that this is interpretability tooling: the paper demonstrates better feature matching and circuit compression, not that downstream interpretability claims become more accurate.