Mage-VL: An Efficient Codec-Native Streaming Multimodal Foundation Model

Hugging Face Daily Papers Papers
multimodal foundation-model streaming codec tokenizer real-time efficiency

Summary

Mage-VL is an efficient codec-native streaming multimodal foundation model that reduces visual token consumption by over 75% using a custom tokenizer, achieving up to 3.5x inference speedup while matching or outperforming existing models on static and video tasks.

Standard vision-language models (VLMs) suffer from Moravec's paradox: they excel at complex offline visual reasoning but struggle with simple streaming perception tasks and process them inefficiently. We present Mage-VL, an efficient codec-native streaming foundation model for real-time multimodal understanding and interaction. At its core, our custom tokenizer, Mage-ViT, replaces uniform frame sampling by selectively encoding dynamic, entropy-rich regions using motion vectors and residual energy across sparse anchor (I) and predicted (P) frames. Operating at a 16 x 16 patch level, this reduces visual token consumption by over 75% while preserving spatiotemporal context. Trained from scratch on approximately 560M unlabeled images and 100M unlabeled video frames, Mage-ViT matches or outperforms flagship encoders trained on billions of image-text pairs. We establish AI4AI data pipelines encompassing prompt-code joint optimization for multimodal captioning and AI-driven performance diagnosis to guide training recipes. Furthermore, through a bio-inspired dual-system architecture - a lightweight System 1 event gate and a causal System 2 decoder - Mage-VL enables proactive streaming perception. Extensive evaluations show that Mage-VL-4B matches Qwen3-VL-4B on static tasks while achieving strong gains in video understanding and 2D/3D spatial reasoning, with up to a 3.5x wall-clock inference speedup, and comprehensively surpasses the 15B Phi-4-reasoning-vision baseline. Beyond model artifacts, we deliver seven key empirical findings covering pre-training data efficiency, variable-resolution scaling, codec system acceleration, VideoQA SFT redundancy, motion-spatial synergy, AI4AI data pipelines, and Zero-Vision SFT for multimodal RL.
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Abstract

Standardvision-languagemodels(VLMs)sufferfromMoravec’sparadox:theyexcelatcomplexofflinevisualreasoningbutstrugglewithsimplestreamingperceptiontasksandprocesstheminefficiently.WepresentMage-VL,anefficientcodec-nativestreamingfoundationmodelforreal-timemultimodalunderstandingandinteraction.Atitscore,ourcustomtokenizer,Mage-ViT,replacesuniformframesamplingbyselectivelyencodingdynamic,entropy-richregionsusingmotionvectorsandresidualenergyacrosssparseanchor(I)andpredicted(P)frames.Operatingata16x16patchlevel,thisreducesvisualtokenconsumptionbyover75%whilepreservingspatiotemporalcontext.Trainedfromscratchonapproximately560Munlabeledimagesand100Munlabeledvideoframes,Mage-ViTmatchesoroutperformsflagshipencoderstrainedonbillionsofimage-textpairs.WeestablishAI4AIdatapipelinesencompassingprompt-codejointoptimizationformultimodalcaptioningandAI-drivenperformancediagnosistoguidetrainingrecipes.Furthermore,throughabio-inspireddual-systemarchitecture-alightweightSystem1eventgateandacausalSystem2decoder-Mage-VLenablesproactivestreamingperception.ExtensiveevaluationsshowthatMage-VL-4BmatchesQwen3-VL-4Bonstatictaskswhileachievingstronggainsinvideounderstandingand2D/3Dspatialreasoning,withuptoa3.5xwall-clockinferencespeedup,andcomprehensivelysurpassesthe15BPhi-4-reasoning-visionbaseline.Beyondmodelartifacts,wedeliversevenkeyempiricalfindingscoveringpre-trainingdataefficiency,variable-resolutionscaling,codecsystemacceleration,VideoQASFTredundancy,motion-spatialsynergy,AI4AIdatapipelines,andZero-VisionSFTformultimodalRL.

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