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What is pgvector?

Postgres has introduced open-source capabilities for vector similarity searches. This advancement enables users to perform both precise and approximate nearest neighbor searches by using various metrics, including L2 distance, inner product, and cosine distance. Furthermore, this new feature significantly improves the database's efficiency in handling and analyzing intricate data sets, making it a valuable tool for data-driven applications. As a result, developers can leverage these capabilities to enhance their data processing workflows.

What is Weaviate?

Weaviate is an open-source, AI-native database that helps organizations build and ship AI applications on a single, scalable foundation. It stores data objects alongside the vector embeddings produced by your chosen machine learning models and scales smoothly to billions of records. Teams can supply their own vectors or use Weaviate's built-in vectorization, then query their data through vector, keyword, and hybrid search to surface the most relevant results, even with complex filters. By integrating with leading large language models, Weaviate makes it straightforward to build retrieval-augmented generation, grounded question answering, and intelligent search over proprietary data. Beyond core retrieval, Weaviate offers a growing platform: the Query Agent converts natural-language questions into precise, cited queries; Engram provides managed memory that lets AI agents retain context over time; and Weaviate Embeddings handles vectorization as a managed service. Organizations can self-host under an open-source license or adopt fully managed Weaviate Cloud on AWS, GCP, or Azure, with SOC 2 Type II compliance, multi-tenancy, replication, and role-based access control. From semantic search and recommendations to agentic automation, Weaviate turns business data into AI-powered products.

Media

Media

Integrations Supported

Langtrace
MyDBA.dev
troveGEN

Integrations Supported

Agno
Amazon SageMaker
Astro by Astronomer
Boomi
Context Data
DocumentDB for VS Code
GitHub
Google Cloud Marketplace
Grok
LangChain
LlamaIndex
Microsoft Azure
Nomic Atlas
OpenAI
Replicate
Voyage AI
n8n

API Availability

API Availability

Has API

Pricing Information

Free
Open source
Free Version

Pricing Information

Free
Open source (free); free Weaviate Cloud tier; paid Cloud plans from $45/mo.
Free Version

Supported Platforms

SaaS
On-Prem

Supported Platforms

SaaS
Windows
Mac
On-Prem
Linux

Customer Service / Support

Not specified

Customer Service / Support

24 Hour Support
Web-Based Support

Training Options

Documentation Hub

Training Options

Documentation Hub
Webinars

Company Facts

Organization Name

pgvector

Company Website

github.com/pgvector/pgvector

Company Facts

Organization Name

Weaviate

Date Founded

2019

Company Location

The Netherlands

Company Website

weaviate.io

Categories and Features

Vector Databases

Not specified

Categories and Features

AI Memory Layers

Not specified

Context Engineering

Not specified

Vector Databases

Not specified

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