Loki vs Prometheus: Key Differences & When to Use Each

Comprehensive side-by-side comparison of features, pricing, and metrics

Key Differences

Compare Loki and Prometheus across features, pricing, integrations, and community metrics. Loki / Prometheus.

Feature

Loki

Monitoring

Prometheus

Monitoring

Side-by-side comparison of developer tools
Like Prometheus, but for logs
The Prometheus monitoring system and time series database
GitHub Stars
⭐ 28,136
⭐ 63,889
Contributors
👥 1,320
👥 1,372
Pricing
✓ Free
Enterprise: Contact sales
✓ Free
Enterprise: Contact sales
Languages
Go
Go
Features
  • • Cloudnative
  • • Grafana
  • • Hacktoberfest
  • • Logging
  • • Loki
  • • Alerting
  • • Graphing
  • • Hacktoberfest
  • • Metrics
  • • Monitoring
Integrations
  • • prometheus
  • • grafana
  • • prometheus
Momentum Score
66/100 (stable)
89/100 (stable)
Community Health
77/100 (good)
95/100 (excellent)
Maturity Index
67/100 (growing)
82/100 (established)
Innovation Score
83/100 (innovative)
88/100 (pioneering)
Risk Score (higher is safer)
76/100 (minimal)
76/100 (minimal)
Developer Experience
54/100 (needs-improvement)
68/100 (fair)
Links
🌐 Visit Website View on GitHub
🌐 Visit Website View on GitHub

Loki Strengths

Prometheus Strengths

  • ✓ More popular (63,889 stars)
  • ✓ Larger community (1,372 contributors)

When to Use Loki vs Prometheus

Use Loki when its strengths align better with your stack and team needs, and choose Prometheus when its ecosystem, integrations, or cost profile is a better fit.

Related comparisons

Loki vs Grafana → Prometheus vs Grafana → Loki vs Jaeger → Prometheus vs Jaeger → Loki vs Zipkin → Prometheus vs Zipkin → Loki vs VictoriaMetrics → Prometheus vs VictoriaMetrics → Loki vs Thanos → Prometheus vs Thanos → Loki vs OpenTelemetry Collector → Prometheus vs OpenTelemetry Collector →

More Comparisons

View Loki → View Prometheus → Search More Tools →

Data source: GitHub API

Last updated: 5/4/2026