psycopg
The most popular PostgreSQL adapter for Python.
Pricing
Free tier
Flat rate
Adoption
→StableLicense
Open Source
Data freshness
Aging · Jun 8, 2026Overview
What is psycopg?
Psycopg is a PostgreSQL database adapter for the Python programming language. It provides a robust and efficient way to interact with PostgreSQL databases, making it an essential tool for developers working with Python and PostgreSQL.
Key differentiator
“Psycopg stands out as the most widely used PostgreSQL adapter for Python, offering comprehensive support and efficient data handling capabilities.”
Capability profile
Capability Radar
Honest assessment
Strengths & Weaknesses
↑ Strengths
↓ Weaknesses
API requires Python-specific patterns, and the documentation assumes familiarity with Python's idioms.
Major version updates from psycopg2 to psycopg3 introduced significant API changes that required substantial code refactoring.
Primary development focus is on Python, with limited or no official support for other languages like TypeScript or JavaScript.
Under heavy load and concurrent connections, psycopg may exhibit performance bottlenecks due to the Global Interpreter Lock (GIL) in CPython.
Setting up advanced features like connection pooling or async support requires detailed configuration and understanding of underlying concepts.
Fit analysis
Who is it for?
✓ Best for
Developers working on Python-based projects that require interaction with PostgreSQL databases.
Teams building web applications using Django or Flask frameworks who need a reliable PostgreSQL adapter.
Projects requiring efficient handling of large datasets and complex queries.
✕ Not a fit for
Projects needing real-time database interactions where latency is critical.
Developers looking for a solution that supports multiple database systems out-of-the-box.
Cost structure
Pricing
Free Tier
Available
Open source — free to use
Starts at
$0
Model
Flat rate
Enterprise
None
Performance benchmarks
How Fast Is It?
Ecosystem
Relationships
Works well with
Next step
Get Started with psycopg
Step-by-step setup guide with code examples and common gotchas.