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    Models/Captioning/ParaVT/ParaVT-8B
    HFScene CaptioningApache 2.0

    ParaVT-8B

    by ParaVT

    Agentic long-video model trained for parallel temporal tool calls

    544dl/month
    8B classparams
    Identifiers
    Model ID
    ParaVT/ParaVT-8B
    Feature URI
    mixpeek://video_extractor@v1/paravt_8b_v1

    Overview

    ParaVT-8B is a video-text-to-text model focused on long-video understanding through tool use. Its model card describes a parallel video tool-calling approach where the model can dispatch multiple temporal crop requests in one turn instead of walking sequentially through a video.

    On Mixpeek, ParaVT is relevant when an agent needs to search long clips and then decide which time windows to inspect. It belongs after retrieval: use vector, transcript, or scene search to narrow the corpus, then let ParaVT reason over candidate spans and request focused temporal crops.

    Architecture

    Final post-RL ParaVT checkpoint based on Qwen3VLForConditionalGeneration and Qwen/Qwen3-VL-8B-Instruct. The release uses cold-start SFT followed by PARA-GRPO reinforcement learning for parseable, parallel temporal tool-calling behavior.

    Mixpeek SDK Integration

    import { Mixpeek } from "mixpeek";
    const mx = new Mixpeek({ apiKey: "API_KEY" });
    await mx.collections.ingest({
    collection_id: "long-video-agent",
    source: { url: "s3://field-video/day-shift.mp4" },
    feature_extractors: [
    { feature: "transcription", model: "openai/whisper-large-v3" },
    { feature: "visual_embeddings", model: "facebook/vjepa2-vitl-fpc64-256" },
    { feature: "scene_caption", model: "ParaVT/ParaVT-8B" }
    ]
    });

    Capabilities

    • Video-text-to-text reasoning over long clips
    • Parallel temporal crop tool calls
    • Agentic RL training for video tool use
    • Apache 2.0 license
    • Drop-in Transformers and vLLM deployment pattern

    Use Cases on Mixpeek

    Let agents inspect several candidate video windows in one reasoning pass
    Find evidence moments inside long recordings after first-stage retrieval
    Build video QA systems that use temporal crop tools
    Compare sequential and parallel video inspection strategies

    Benchmarks

    DatasetMetricScoreSource
    ParaVT releaseTask focusLong-video parallel tool callingParaVT model card
    Hugging FaceRelease ageCreated May 2026HF model metadata

    Performance

    Input SizeLong videos through temporal windows
    GPU LatencyInput dependent
    GPU ThroughputBatch dependent
    GPU Memory8B class VLM

    Best used after retrieval has narrowed the video corpus or candidate time spans

    Specification

    FrameworkHF
    OrganizationParaVT
    FeatureScene Captioning
    Outputtext
    Modalitiesvideo, image
    RetrieverSemantic Search
    Parameters8B class
    LicenseApache 2.0
    Downloads/mo544

    Research Paper

    ParaVT: Taming the Tool Prior Paradox for Parallel Tool Use in Agentic Video Reinforcement Learning

    arxiv.org

    Build a pipeline with ParaVT-8B

    Add this model to a processing pipeline alongside other extractors. Combine with retrieval stages for end-to-end search.

    Open Studio