---
title: "SPTAG"
type: "tool"
slug: "microsoft-sptag"
canonical_url: "https://www.graphcanon.com/tools/microsoft-sptag"
github_url: "https://github.com/microsoft/SPTAG"
homepage_url: null
stars: 5006
forks: 620
primary_language: "C++"
license: "MIT"
archived: false
categories: ["vector-databases", "developer-tools", "inference-serving"]
tags: ["space-partition-tree", "fresh-update", "c", "neighborhood-graph", "vector-search", "distributed-serving", "approximate-nearest-neighbor-search"]
updated_at: "2026-07-11T11:33:08.424973+00:00"
---

# SPTAG

> A distributed approximate nearest neighborhood search (ANN) library which provides a high quality vector index build, search and distributed online serving toolkits for large scale vector search scena

A distributed approximate nearest neighborhood search (ANN) library which provides a high quality vector index build, search and distributed online serving toolkits for large scale vector search scenario.

## Facts

- Repository: https://github.com/microsoft/SPTAG
- Stars: 5,006 · Forks: 620 · Open issues: 143 · Watchers: 131
- Primary language: C++
- License: MIT
- Last pushed: 2026-06-29T09:36:32+00:00

## Trust & health

_Signals computed from public GitHub metadata. Not a security guarantee._

- Maintenance: Active (computed 2026-07-11T11:33:06.824Z)
- Security scan: No lockfile (0 critical, 0 high, 0 medium, 0 low) · last scan 2026-07-11T11:33:07.417Z
- Full report: [trust report](/tools/microsoft-sptag/trust.md) · [JSON](https://www.graphcanon.com/api/graphcanon/tools/microsoft-sptag/trust)

## Categories

- [Vector Databases](/categories/vector-databases.md)
- [Developer Tools](/categories/developer-tools.md)
- [Inference & Serving](/categories/inference-serving.md)

## Tags

space-partition-tree, fresh-update, c, neighborhood-graph, vector-search, distributed serving, approximate-nearest-neighbor-search

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_+ 2 more not listed._

---

**Machine-readable endpoints**

- JSON: [`/api/graphcanon/tools/microsoft-sptag`](/api/graphcanon/tools/microsoft-sptag)
- LLM index: [/llms.txt](/llms.txt)
- Full corpus: [/llms-full.txt](/llms-full.txt)

_GraphCanon - The knowledge graph for AI development. https://www.graphcanon.com/_