Software · head to head
Sematext vs Fluent Bit
The short version
- Each has a real cost: Sematext the $5 Basic plan caps ingestion at 500 MB a day and retains logs for 7 days; Fluent Bit fluent Bit ships over 100 built in plugins against more than 1,000 external plugins available for Fluentd, so fewer integrations exist out of the box
- They diverge on capability: Sematext covers Log aggregation, Fluent Bit covers Log collection.
Where they differ
Only the attributes on which Sematext and Fluent Bit actually diverge.
| Attribute | Sematext | Fluent Bit |
|---|---|---|
| Pricing model | usage-based | open-source |
| Founded | 2007 | 2015 |
Identical on both: starting price (Free), free tier (Yes), platforms (Web, Api), 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 Sematext
- Log aggregation
- APM
- Metrics monitoring
- Anomaly detection
Only in Fluent Bit
- Log collection
- Lightweight processing
- Data parsing
- Event filtering
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.
Sematext
- Centralised log management and search across servicesnot Fluent Bit
- Infrastructure and application monitoring alongside logsnot Fluent Bit
Fluent Bit
- Lightweight log and metric forwarding from containers and edge devicesnot Sematext
- Kubernetes node level log collection with a small memory footprintnot Sematext
- Filtering and enriching telemetry before shipping it to a backendnot Sematext
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Sematext
- The $5 Basic plan caps ingestion at 500 MB a day and retains logs for 7 days
- Ingestion and storage are billed on separate meters, at $0.10 per GB received and $0.15 per GB stored
- Retention is a plan property rather than a setting, so keeping logs longer means moving tier
- The published pricing page renders Standard and Pro figures from unresolved template placeholders, so only the Basic numbers are actually readable
Fluent Bit
- Fluent Bit ships over 100 built in plugins against more than 1,000 external plugins available for Fluentd, so fewer integrations exist out of the box
- It is written in C, so extending it beyond the built in plugins means writing C rather than Ruby
- Dependencies are zero only until a plugin requires one
Pricing, plan by plan
Sematext
Free- FreeFree
- Log aggregation
- APM
- Metrics monitoring
Fluent Bit
Free- FreeFree
- Log collection
- Lightweight processing
- Data parsing
Which should you pick?
Choose Sematext if
- You need log aggregation.
- You want to start without paying.
- You work on Web, Api.
- You also want apm.
Choose Fluent Bit if
- You need log collection.
- You want to start without paying.
- You work on Web, Api.
- You also want lightweight processing.
Questions people ask
- Is Sematext or Fluent Bit better?
- Neither clearly leads. Sematext starts at Free and Fluent Bit at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Sematext or Fluent Bit?
- Sematext starts at Free and Fluent Bit at Free.
- Does Sematext or Fluent Bit run on more platforms?
- Both run on Web, Api, so platform support will not decide this one for you.
- Can I use Sematext for free?
- Both have a free tier, so you can try either at no cost before committing.
- What is Sematext best used for?
- Sematext is most often used for centralised log management and search across services, infrastructure and application monitoring alongside logs. Of those, centralised log management and search across services and infrastructure and application monitoring alongside logs are not what Fluent Bit is typically brought in for.
- What can Sematext do that Fluent Bit cannot?
- Sematext covers Log aggregation, APM, Metrics monitoring, Anomaly detection. Fluent Bit covers Log collection, Lightweight processing, Data parsing, Event filtering. Both handle API, Webhooks, REST, Web support.