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InfluxDB vs Splunk Cloud

InfluxDB logo

InfluxDB

Logging

Purpose-built time series database for metrics and events

From
Free
Free plan
Yes
Visit InfluxDBFull review
Splunk Cloud logo

Splunk Cloud

Logging

Cloud-Based Log Management and Analytics

From
$675/year
Free plan
No
Visit Splunk CloudFull review

The short version

  • InfluxDB is an open source time series database.
  • InfluxDB has a free plan, then $0.0025/mo; Splunk Cloud starts at $675/yr.
  • Only InfluxDB lists flux Query Language; only Splunk Cloud lists log aggregation.
  • Where InfluxDB falls short: high-cardinality data causes memory pressure and performance degradation.
  • Where Splunk Cloud falls short: significantly higher pricing than competitors like Datadog and Elastic.
  • Prices and features on this page were last checked on 30 August 2026.

Where they differ

Only the attributes on which InfluxDB and Splunk Cloud actually diverge.

Attributes where InfluxDB and Splunk Cloud differ
AttributeInfluxDBSplunk Cloud
Starting priceFree$675/year
Free tierYesNo
PlatformsWeb, Self-hosted, Linux, macOS, Windows, AWS, AzureWeb
Founded20122003

Identical on both: category (Logging).

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 InfluxDB

  • Time-series Storage
  • Flux Query Language
  • High Write Throughput
  • Data Compression
  • Retention Policies
  • Continuous Queries
  • Built-in Dashboards
  • Telegraf

Only in Splunk Cloud

  • Log aggregation
  • Real-time analytics
  • Machine learning
  • Advanced dashboards
  • Compliance tools
  • Cloud scalability
  • API
  • Webhooks

Both cover

  • Web support

What people use each for

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

InfluxDB

  • Monitoringnot Splunk Cloud
  • IoT datanot Splunk Cloud
  • Financial datanot Splunk Cloud
  • Log analyticsnot Splunk Cloud
  • Observabilitynot Splunk Cloud

Splunk Cloud

  • Log monitoringnot InfluxDB
  • Application performancenot InfluxDB
  • Security analyticsnot InfluxDB
  • Troubleshootingnot InfluxDB

Where each one falls short

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

InfluxDB

  • High-cardinality data causes memory pressure and performance degradation
  • No support for joins or transactions like relational databases
  • Queries limited to 72-hour window in InfluxDB 3 OSS Core
  • Clustering and authentication features absent from community version

Splunk Cloud

  • Significantly higher pricing than competitors like Datadog and Elastic
  • Per-GB ingest costs of $150+/day make budget forecasting difficult
  • Extended retention adds substantial additional costs
  • Enterprise Security add-on costs $25-45/GB/day on top of base pricing

Pricing, plan by plan

InfluxDB

Free
  • Cloud Serverless FreeFree
    • 5 MB writes per 5 minutes
    • 300 MB queries per 5 minutes
    • 30 day retention
  • Cloud Serverless Usage-BasedOn request
    • 0.0025 USD per MB ingested
    • 0.012 USD per 100 queries
    • 0.002 USD per GB-hour storage

Splunk Cloud

$675/year

No published plan breakdown. See the Splunk Cloud review.

Which should you pick?

Choose InfluxDB if

  • You need time-series storage.
  • You want to start without paying.
  • You work on Web, Self-hosted, Linux, macOS, Windows, AWS, Azure.
  • You also want flux query language.
InfluxDB review

Choose Splunk Cloud if

  • You need log aggregation.
  • You also want real-time analytics.
Splunk Cloud review

Questions people ask

Is InfluxDB or Splunk Cloud better?
Neither clearly leads. InfluxDB starts at Free and Splunk Cloud at $675/year, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, InfluxDB or Splunk Cloud?
InfluxDB has a free tier; the other does not. Paid plans start at Free for InfluxDB and $675/year for Splunk Cloud.
Does InfluxDB or Splunk Cloud run on more platforms?
InfluxDB runs on Web, Self-hosted, Linux, macOS, Windows, AWS, Azure. Splunk Cloud runs on Web.
Can I use InfluxDB for free?
Yes. InfluxDB has a free tier, so you can try it without paying. Splunk Cloud starts at $675/year.
What is InfluxDB best used for?
InfluxDB is most often used for monitoring, iot data, financial data, log analytics. Of those, monitoring and iot data are not what Splunk Cloud is typically brought in for.
What can InfluxDB do that Splunk Cloud cannot?
InfluxDB covers Time-series Storage, Flux Query Language, High Write Throughput, Data Compression. Splunk Cloud covers Log aggregation, Real-time analytics, Machine learning, Advanced dashboards. Both handle Web support.

Answered from the vendors’ own pages

InfluxDB: Is there a free tier and what are the limits?

InfluxDB 3 Core OSS is free forever for local development and prototyping. Cloud Serverless free tier includes 5 MB writes per 5 minutes, 300 MB queries per 5 minutes, 30 day retention, and 2 databases.

Source
Splunk Cloud: How is Splunk Cloud priced?

Splunk Cloud uses two pricing models: legacy per-GB ingest at $150+/GB/day or newer workload pricing ranging from $3,000 to $400,000/month depending on pack size. Simpler deployments offer ingest pricing with 5GB/day at $675/year.

Source
InfluxDB: Can I self-host InfluxDB?

Yes, InfluxDB 3 Core is fully open source and can be self-hosted with no license required. InfluxDB 3 Enterprise is self-managed and includes a 30-day free trial.

Source
Splunk Cloud: What is included with Splunk Cloud storage?

Storage is included for a default retention period, typically 90 days for hot/warm data, with extended retention costing extra.

Source
InfluxDB: What are the series cardinality limitations?

InfluxDB is sensitive to high-cardinality data. High cardinality increases RAM usage and can trigger out-of-memory errors, making it unsuitable for some workloads with many unique tag combinations.

Source
Splunk Cloud: Is Splunk Cloud managed or do I need to manage infrastructure?

Splunk Cloud is a fully managed SaaS offering where Cisco (current owner) handles infrastructure, upgrades, and scaling.

Source
InfluxDB: Does InfluxDB support SQL queries?

InfluxDB has limited SQL support. Full SQL is available in InfluxDB 3, but earlier versions support only specific SQL commands and use InfluxQL as the primary query language.

Source
Splunk Cloud: What makes Splunk Cloud expensive compared to alternatives?

Splunk remains the highest-priced major log platform, but offers the most powerful query language (SPL) and the deepest enterprise security ecosystem.

Source
InfluxDB: Can I export my data from InfluxDB?

Yes, data can be exported from InfluxDB using query results. However, the process and supported formats depend on the version and deployment type you are using.

Source
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