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Open-source log aggregation designed for Grafana
Overall score
78/100
Verdict
Good
Pricing
Free
Performance radar — Grafana Loki
Score breakdown
Developer UX
SDK setup, query language, and dashboard usability.
Source: RadarTrek research
Query Performance
Speed of searching and filtering large log volumes.
Source: RadarTrek research
Retention
How long logs are searchable before being archived.
Source: RadarTrek research
Price / Value
Cost per GB ingested and free tier generosity.
Source: RadarTrek research
Alerting
Log-based alert rules and anomaly detection.
Source: RadarTrek research
Integrations
Log shippers, framework SDKs, and platform integrations.
Source: RadarTrek research
Grafana Loki is an open-source log aggregation system designed to be cost-effective and easy to operate, indexing only metadata rather than full log content. Pairs natively with Grafana dashboards.
In our independent evaluation across 6 scored dimensions, Grafana Loki earns an overall score of 78/100 — a strong result in the logging category. The platform is available including a permanently free tier, accessible to teams at any budget level. The score of 78 places it in the good tier of our logging rankings, where we assess tools on criteria that matter to builders: developer ux, query performance, retention, and more.
Grafana Loki scores highest on Price / Value (98/100) and Retention (85/100), placing it among the stronger performers in those areas within the logging category. The dimensions with the most room for improvement are Developer UX (65/100) and Alerting (70/100) — teams who weight these criteria most heavily should compare Grafana Loki carefully against alternatives before committing. The free entry point makes it easy to validate Grafana Loki before committing to a paid plan — a practical advantage when evaluating a new tool category. Our recommendation: Grafana Loki is worth a serious evaluation for teams that prioritise price / value — use the radar chart and dimension breakdown on this page to see at a glance whether its profile matches your priorities.
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Yes — Grafana Loki is free to use with no trial period or credit card required. It offers a permanently free tier, though paid plans with higher limits or additional features are typically available. Check the official pricing page for current plan details.
Grafana Loki scores highest on Price / Value in our independent assessment — 98/100, placing it among the stronger performers in this dimension within the logging category. Cost per GB ingested and free tier generosity.. Teams who count price / value as a primary criterion should put Grafana Loki high on their evaluation list.
The lowest-scoring dimension for Grafana Loki in our testing is Developer UX (65/100). This does not make it the wrong choice — if developer ux is not a priority for your use case, the gap is irrelevant. But teams who weight developer ux most heavily should compare Grafana Loki carefully against alternatives before committing, using the radar chart on this page to see the full profile at a glance.
Grafana Loki earns an overall RadarTrek score of 78/100 — a strong result in the logging category. Scores above 75 indicate a tool that performs well across most dimensions without a critical weakness. At 78/100, Grafana Loki is a reliable choice for most teams evaluating this space. Scores are reviewed when significant updates are released, so the number reflects the current version of the product.
The best alternative to Grafana Loki depends on which dimension matters most to you. Use the "Compare with" links in the sidebar to see a head-to-head radar chart against any specific competitor in the logging category. The main logging category page ranks all tools by overall score and lets you filter by dimension to find alternatives that lead on your priority criterion.
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Specs