Software · head to head
Splunk Cloud vs Fluentd
The short version
- Only Fluentd has a free tier, so it costs nothing to try first.
- Each has a real cost: Splunk Cloud significantly higher pricing than competitors like Datadog and Elastic; Fluentd fluentd needs more than 60 MB of memory at runtime, against roughly 450 KB for Fluent Bit
- They diverge on capability: Splunk Cloud covers Log aggregation, Fluentd covers Log collection.
Where they differ
Only the attributes on which Splunk Cloud and Fluentd actually diverge.
| Attribute | Splunk Cloud | Fluentd |
|---|---|---|
| Starting price | $675/year | Free |
| Pricing model | Unknown | open-source |
| Free tier | No | Yes |
| Platforms | Web | Web, Api |
| Founded | 2003 | 2011 |
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 Splunk Cloud
- Log aggregation
- Real-time analytics
- Machine learning
- Advanced dashboards
- Compliance tools
- Cloud scalability
Only in Fluentd
- Log collection
- Data parsing
- Filtering and buffering
- Event routing
Both cover
- API
- Webhooks
- REST
- Web support
- Api support
What people use each for
The jobs each tool is most often brought in to do.
Splunk Cloud
- Log monitoringnot Fluentd
- Application performancenot Fluentd
- Security analyticsnot Fluentd
- Troubleshootingnot Fluentd
Fluentd
- Unified log collection and routing from many sources to many destinationsnot Splunk Cloud
- Parsing and transforming log records before forwardingnot Splunk Cloud
- Aggregating logs from containers into Elasticsearch, S3 or a SIEMnot Splunk Cloud
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
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
Fluentd
- Fluentd needs more than 60 MB of memory at runtime, against roughly 450 KB for Fluent Bit
- Fluentd is built as a Ruby gem and depends on other gems, so a Ruby runtime is required
- Its capability comes from over 1,000 external plugins rather than built in functionality, so each added input or output is a separate dependency
- The Fluent Bit documentation states that cloud providers have switched from Fluentd to Fluent Bit for performance and compatibility and calls Fluent Bit the next generation solution
Pricing, plan by plan
Splunk Cloud
$675/yearNo published plan breakdown. See the Splunk Cloud review.
Fluentd
Free- FreeFree
- Log collection
- Data parsing
- Filtering and buffering
Which should you pick?
Choose Splunk Cloud if
- You need log aggregation.
- You also want real-time analytics.
Choose Fluentd if
- You need log collection.
- You want to start without paying.
- You work on Web, Api.
- You also want data parsing.
Questions people ask
- Is Splunk Cloud or Fluentd better?
- Neither clearly leads. Splunk Cloud starts at $675/year and Fluentd at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Splunk Cloud or Fluentd?
- Fluentd has a free tier; the other does not. Paid plans start at $675/year for Splunk Cloud and Free for Fluentd.
- Does Splunk Cloud or Fluentd run on more platforms?
- Splunk Cloud runs on Web. Fluentd runs on Web, Api.
- Can I use Fluentd for free?
- Yes. Fluentd has a free tier, so you can try it without paying. Splunk Cloud starts at $675/year.
- What is Splunk Cloud best used for?
- Splunk Cloud is most often used for log monitoring, application performance, security analytics, troubleshooting. Of those, log monitoring and application performance are not what Fluentd is typically brought in for.
- What can Splunk Cloud do that Fluentd cannot?
- Splunk Cloud covers Log aggregation, Real-time analytics, Machine learning, Advanced dashboards. Fluentd covers Log collection, Data parsing, Filtering and buffering, Event routing. Both handle API, Webhooks, REST, Web support.
Answered from the vendors’ own pages
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.
SourceSplunk 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.
SourceSplunk 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.
SourceSplunk 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