Fluentd vs Loki: Key Differences & When to Use Each

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

Key Differences

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

Feature

Fluentd

Logging

Loki

Monitoring

Side-by-side comparison of developer tools
Unified logging layer
Like Prometheus, but for logs
GitHub Stars
⭐ 13,530
⭐ 28,136
Contributors
👥 283
👥 1,320
Pricing
✓ Free
Enterprise: Contact sales
✓ Free
Enterprise: Contact sales
Languages
Ruby
Go
Features
  • • Cncf
  • • Data Collector
  • • Fluentd
  • • Logging
  • • Ruby
  • • Cloudnative
  • • Grafana
  • • Hacktoberfest
  • • Logging
  • • Loki
Integrations
No integrations listed
  • • prometheus
  • • grafana
Momentum Score
41/100 (stable)
66/100 (stable)
Community Health
23/100 (needs-attention)
77/100 (good)
Maturity Index
28/100 (experimental)
67/100 (growing)
Innovation Score
28/100 (traditional)
83/100 (innovative)
Risk Score (higher is safer)
29/100 (high)
76/100 (minimal)
Developer Experience
36/100 (poor)
54/100 (needs-improvement)
Links
🌐 Visit Website View on GitHub
🌐 Visit Website View on GitHub

Fluentd Strengths

Loki Strengths

  • ✓ More popular (28,136 stars)
  • ✓ Larger community (1,320 contributors)

When to Use Fluentd vs Loki

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

Related comparisons

Fluentd vs Vector → Loki vs Grafana → Fluentd vs Logstash → Loki vs Prometheus → Fluentd vs Fluent Bit → Loki vs Jaeger → Fluentd vs Datadog Agent → Loki vs Zipkin → Loki vs VictoriaMetrics → Loki vs Thanos →

More Comparisons

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Data source: GitHub API

Last updated: 5/4/2026