Shanghai AI Lab and SJTUโs LUMIA Lab release NCP-ArchPreview, an open-weight 8.9B language modell. ๐ Apache 2.0.
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โก Trained on 5.73T Dolma 3 tokens, it reaches OLMo-3-7Bโs final Stage 1 loss with only 51.3% of the tokens, a 1.95ร convergence gain.
๐ Its Stage 1 macro-average rises from 46.59 to 49.04, with +5.99 on GSM8K and +4.28 on HumanEval.
๐ง NCP jointly predicts tokens and a concept sequence at one-quarter the length, then feeds those concepts back to guide generation.
๐ Domain adaptation updates only the 17M-parameter concept module while keeping the token backbone frozen.
๐ Concept-conditioned drafting improves mean accepted length by 4.17% with negligible overhead.