omni-embed-nemotron-3b
by nvidia
Unified embedding model for text, image, audio, and video retrieval in a single vector space
nvidia/omni-embed-nemotron-3bmixpeek://image_extractor@v1/nvidia_omni_embed_nemotron_3b_v1Deploy omni-embed-nemotron-3b
Single-tenantMixpeek has no managed extractor for this model. On a single-tenant deployment you upload the weights and a custom plugin serves them next to the rest of your pipeline.
Overview
Omni-Embed Nemotron is NVIDIA's omnimodal embedding model that encodes text, images, audio, and video into a shared 2048-dimensional vector space. Built on the Thinker component of Qwen2.5-Omni-3B, it processes each modality independently and projects into a single retrieval-ready embedding.
On Mixpeek, Omni-Embed Nemotron enables true cross-modal search: query with text and retrieve matching video clips, audio segments, document pages, or images from a single index. One model replaces four separate embedding pipelines.
Architecture
Transformer-based encoder derived from Qwen2.5-Omni-3B (Thinker only, no Talker). 2048-dim output embeddings. 32K max context tokens. Modality-separated encoding with independent audio and video processing paths. 4.7B parameters.
Mixpeek SDK Integration
// No extractor parameter takes a Hugging Face model id (checked against
// GET /v1/discovery/extractors, which returns 13), so omni-embed-nemotron-3b runs
// on your side and the output is upserted through POST
// /v1/namespaces/{namespace_id}/documents/upsert. On Enterprise the other
// path is to upload the weights instead: POST /v1/namespaces/{id}/models
// accepts the huggingface format and a custom plugin loads them.
const res = await fetch(
"https://api.mixpeek.com/v1/namespaces/ns_your_namespace/documents/upsert",
{
method: "POST",
headers: {
Authorization: "Bearer API_KEY",
"Content-Type": "application/json",
},
body: JSON.stringify({
collection_id: "col_your_collection",
documents: [
{
document_id: "asset-00412",
// The vector name has to match a vector index on the collection.
vectors: { "multimodal-embedding": yourVector },
payload: { source_key: "archive/2026/asset-00412" },
},
],
}),
},
);
// Managed alternative, if this exact model is not the requirement:
// multimodal_extractor@v2 runs google/gemini-embedding-2
// (3072-d) over a bucket, with no inference of your own.Capabilities
- Unified text, image, audio, and video embeddings in one model
- 2048-dimensional dense vectors for cross-modal retrieval
- 32K token context window
- State-of-the-art video retrieval among embedding models
- Competitive visual document retrieval (85.7 nDCG@5 on ViDoRe V1)
Use Cases on Mixpeek
Benchmarks
| Dataset | Metric | Score | Source |
|---|---|---|---|
| ViDoRe V1 (visual doc) | nDCG@5 | 85.7% | NVIDIA, 2025: Model Card |
| MTEB text retrieval (10 tasks) | nDCG@10 avg | 0.606 | NVIDIA, 2025: Model Card |
| Video retrieval (LPM + FineVideo) | nDCG@10 avg | 0.706 | NVIDIA, 2025: Model Card |
Performance
Common Pipeline Companions
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Specification
Research Paper
Omni-Embed-Nemotron: A Unified Multimodal Retrieval Model
arxiv.orgBuild a pipeline with omni-embed-nemotron-3b
Add this model to a processing pipeline alongside other extractors. Combine with retrieval stages for end-to-end search.
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