Kimi-VL-A3B-Thinking-2506
by moonshotai
Efficient MoE reasoning VLM with 2.8B activated parameters and SOTA video understanding
moonshotai/Kimi-VL-A3B-Thinking-2506mixpeek://image_extractor@v1/moonshotai_kimi_vl_a3b_v1Overview
Kimi-VL-A3B-Thinking is Moonshot AI's efficient Mixture-of-Experts vision-language model that activates only 2.8B of its 16B total parameters per forward pass. It achieves state-of-the-art video understanding among open-source models while supporting native-resolution images up to 3.2 megapixels and 131K token context.
On Mixpeek, Kimi-VL powers high-quality scene captioning, visual reasoning, and OCR extraction at a fraction of the compute cost of dense 7B+ models. Its MoE architecture makes it especially cost-effective for batch processing large video libraries.
Architecture
Mixture-of-Experts VLM: MoonViT vision encoder (native-resolution, up to 3.2M pixels) + MLP projector + Moonlight-16B-A3B MoE language decoder. 16B total / ~2.8B activated parameters. 131K max context. Long-CoT SFT + reinforcement learning with 20% reduced thinking tokens.
Mixpeek SDK Integration
// No extractor parameter takes a Hugging Face model id (checked against
// GET /v1/discovery/extractors, which returns 13), so Kimi-VL-A3B-Thinking-2506 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 model produces text, so it lands in payload. Give the
// collection a text vector index and embed that text to make it
// searchable rather than only filterable.
payload: { extracted_text: modelOutput, source_key: "archive/2026/asset-00412" },
vectors: { "multimodal-embedding": embeddingOfModelOutput },
},
],
}),
},
);
// Managed alternative, if this exact model is not the requirement:
// universal_extractor@v1 runs google/gemini-embedding-2
// (3072-d) over a bucket, with no inference of your own.Capabilities
- SOTA video understanding for open-source (65.2 on VideoMMMU)
- Only 2.8B activated parameters (MoE efficiency)
- Native high-resolution image support up to 3.2 megapixels
- 131K token context for long documents
- Strong OCR (869 on OCRBench) and GUI grounding (91.4 on ScreenSpot-V2)
Use Cases on Mixpeek
Benchmarks
| Dataset | Metric | Score | Source |
|---|---|---|---|
| VideoMMMU | Accuracy | 65.2 | Moonshot AI, 2025: arxiv,2504.07491 |
| MMMU | Pass@1 | 64.0 | Moonshot AI, 2025: arxiv,2504.07491 |
| MathVision | Pass@1 | 56.9 | Moonshot AI, 2025: arxiv,2504.07491 |
Performance
Common Pipeline Companions
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Specification
Research Paper
Kimi-VL Technical Report
arxiv.orgBuild a pipeline with Kimi-VL-A3B-Thinking-2506
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