Tools Practical By Samson Tanimawo, PhD Published Dec 16, 2025 4 min read

Loki vs Elastic vs Splunk

Three log backends. Decision criteria.

Loki

Cheap; label-based indexing only. Storage on object storage. Cost: $1-5 per GB/month.

Best for: K8s-heavy, Grafana-stack shops. Cost-sensitive teams with structured logs and label-based query patterns.

Limitation: poor for full-text search. Content searches scan rather than index.

Mature; full-text search; broad ecosystem. Kibana, Beats, Logstash, ML features.

Best for: full-text search needs, mature Elastic operations, regulated industries with retention requirements.

Cost: $20-50 per GB/month. Operational complexity real; index lifecycle management essential.

Enterprise-grade; expensive; powerful. Industry standard at large enterprises.

Best for: orgs already on Splunk, compliance environments, very large scale operations.

Cost: significantly higher than Loki or Elastic. Pricing model based on daily ingest; budget carefully.

Cost-sensitive, K8s-heavy, Grafana stack: Loki.

Mid-market, full-text needs: Elastic.

Enterprise with budget: Splunk for compliance and scale; Elastic if Splunk cost is unjustified.