structlog
Structured logging made easy for Python applications.
Pricing
Free tier
Flat rate
Adoption
→StableLicense
Open Source
Data freshness
Aging · Jun 8, 2026Overview
What is structlog?
Structlog is a structured logging library that simplifies the process of adding context to log messages in Python. It helps developers create more useful and actionable logs, which are essential for debugging and monitoring applications.
Key differentiator
“Structlog stands out with its simplicity and flexibility in adding structured context to log messages, making it easier than ever to create actionable logs without complex configurations.”
Capability profile
Capability Radar
Honest assessment
Strengths & Weaknesses
↑ Strengths
↓ Weaknesses
API requires Python-specific patterns, TypeScript SDK is community-maintained
v0.1 to v0.2 migration required rewriting chain definitions
Primarily designed for Python ecosystems, limited support for other languages and frameworks
Configuring processors and formatters can be intricate, requiring deep understanding of structlog's internal mechanisms
Fit analysis
Who is it for?
✓ Best for
Python developers who need to add structured context to their log messages
Teams building microservices that require consistent logging across services
Projects where log data needs to be easily parsed and analyzed by monitoring tools
✕ Not a fit for
Developers looking for a full-stack observability solution (structlog is just the logging part)
Non-Python projects, as it's specifically designed for Python applications
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
Alternatives
Works well with
Next step
Get Started with structlog
Step-by-step setup guide with code examples and common gotchas.