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Grafana Loki vs Splunk Enterprise

Grafana Loki logo

Grafana Loki

Software

Log Aggregation for Grafana Stack

From
Free
Rated
-
Full reviewWebsite
Splunk Enterprise logo

Splunk Enterprise

Software

Enterprise Search, Monitoring, and Analytics

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only Grafana Loki has a free tier, so it costs nothing to try first.
  • Each has a real cost: Grafana Loki grafana Cloud Logs Pro plan includes only 30-day retention; retention beyond 30 days requires Enterprise plan with minimum $25,000 annual commitment; Splunk Enterprise splunk Platform and Enterprise Security offerings carry no published rate and require contacting sales for a quote
  • They diverge on capability: Grafana Loki covers Label-based indexing, Splunk Enterprise covers Real-time monitoring.

Where they differ

Only the attributes on which Grafana Loki and Splunk Enterprise actually diverge.

Attributes where Grafana Loki and Splunk Enterprise differ
AttributeGrafana LokiSplunk Enterprise
Starting priceFreeOn request
Pricing modelfreemiumusage-based
Free tierYesNo
PlatformsSelf-hosted (open source), Managed (Grafana Cloud Logs), Enterprise (self-managed with support)Web, Api
Founded20142003

Identical on both: user rating (Not yet rated), category (Unknown).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Grafana Loki

  • Label-based indexing
  • LogQL language
  • Cost-effective

Only in Splunk Enterprise

  • Real-time monitoring
  • Advanced analytics
  • Compliance

Both cover

  • Log aggregation
  • API
  • Webhooks
  • REST
  • Web support
  • Api support

What people use each for

The jobs each tool is most often brought in to do.

Grafana Loki

  • Cost-sensitive organisations deploying Kubernetes and Prometheus ecosystemsnot Splunk Enterprise
  • Teams needing index-free log aggregation for high-volume environmentsnot Splunk Enterprise

Splunk Enterprise

  • Indexing and searching machine data and logs at enterprise scalenot Grafana Loki
  • Security information and event management via Enterprise Securitynot Grafana Loki
  • IT service intelligence and infrastructure observabilitynot Grafana Loki

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Grafana Loki

  • Grafana Cloud Logs Pro plan includes only 30-day retention; retention beyond 30 days requires Enterprise plan with minimum $25,000 annual commitment
  • Open-source version requires self-hosting all infrastructure including storage and scaling

Splunk Enterprise

  • Splunk Platform and Enterprise Security offerings carry no published rate and require contacting sales for a quote
  • Four different pricing models are offered (activity, ingest, workload and entity based) and the applicable one depends on the product purchased
  • Published Observability Cloud rates start at $15 per host per month and are billed annually rather than monthly
  • Volume discounts are not published and require direct consultation with sales

Pricing, plan by plan

Grafana Loki

Free

No published plan breakdown. See the Grafana Loki review.

Splunk Enterprise

On request
  • Starter$undefined/month
    • Log aggregation
    • Real-time monitoring
    • Advanced analytics

Which should you pick?

Choose Grafana Loki if

  • You need label-based indexing.
  • You want to start without paying.
  • You work on Self-hosted (open source), Managed (Grafana Cloud Logs), Enterprise (self-managed with support).
  • You also want logql language.
Grafana Loki review

Choose Splunk Enterprise if

  • You need real-time monitoring.
  • You work on Web, Api.
  • You also want advanced analytics.
Splunk Enterprise review

Questions people ask

Is Grafana Loki or Splunk Enterprise better?
Neither clearly leads. Grafana Loki starts at Free and Splunk Enterprise at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Grafana Loki or Splunk Enterprise?
Grafana Loki has a free tier; the other does not. Paid plans start at Free for Grafana Loki and On request for Splunk Enterprise.
Does Grafana Loki or Splunk Enterprise run on more platforms?
Grafana Loki runs on Self-hosted (open source), Managed (Grafana Cloud Logs), Enterprise (self-managed with support). Splunk Enterprise runs on Web, Api.
Can I use Grafana Loki for free?
Yes. Grafana Loki has a free tier, so you can try it without paying. Splunk Enterprise starts at On request.
What is Grafana Loki best used for?
Grafana Loki is most often used for cost-sensitive organisations deploying kubernetes and prometheus ecosystems, teams needing index-free log aggregation for high-volume environments. Of those, cost-sensitive organisations deploying kubernetes and prometheus ecosystems and teams needing index-free log aggregation for high-volume environments are not what Splunk Enterprise is typically brought in for.
What can Grafana Loki do that Splunk Enterprise cannot?
Grafana Loki covers Label-based indexing, LogQL language, Cost-effective. Splunk Enterprise covers Real-time monitoring, Advanced analytics, Compliance. Both handle Log aggregation, API, Webhooks, REST.
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