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Logging · head to head

Fluent Bit vs Loggly

Fluent Bit logo

Fluent Bit

Logging

Fast and Lightweight Log Processor

From
Free
Rated
-
Full reviewWebsite
Loggly logo

Loggly

Logging

Cloud-Based Log Management and Analytics

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: 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; Loggly the free Lite plan caps ingest at 200 MB per day with 7 day retention
  • They diverge on capability: Fluent Bit covers Log collection, Loggly covers Log aggregation.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Fluent Bit and Loggly actually diverge.

Attributes where Fluent Bit and Loggly differ
AttributeFluent BitLoggly
Pricing modelopen-sourceusage-based
Founded20152009

Identical on both: starting price (Free), free tier (Yes), platforms (Web, Api), user rating (Not yet rated), 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 Fluent Bit

  • Log collection
  • Lightweight processing
  • Data parsing
  • Event filtering

Only in Loggly

  • Log aggregation
  • Real-time search
  • Custom dashboards
  • Alert management

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.

Fluent Bit

  • Lightweight log and metric forwarding from containers and edge devicesnot Loggly
  • Kubernetes node level log collection with a small memory footprintnot Loggly
  • Filtering and enriching telemetry before shipping it to a backendnot Loggly

Loggly

  • Cloud-hosted log aggregation for small and mid-sized engineering teamsnot Fluent Bit
  • Alerting on log patterns via email, webhook, PagerDuty or Slacknot Fluent Bit
  • Log analysis alongside SolarWinds infrastructure and application monitoringnot Fluent Bit

Where each one falls short

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

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

Loggly

  • The free Lite plan caps ingest at 200 MB per day with 7 day retention
  • API access and archiving to Amazon S3 start on the Pro plan at $159 per month billed annually
  • Federated identity management is an Enterprise feature, starting at $279 per month billed annually
  • The Standard plan at $79 per month is limited to 1 GB per day and 3 source groups
  • Maximum retention is 90 days and only on Enterprise; Standard is fixed at 15 days

Pricing, plan by plan

Fluent Bit

Free
  • FreeFree
    • Log collection
    • Lightweight processing
    • Data parsing

Loggly

Free
  • FreeFree
    • Log aggregation
    • Real-time search
    • Custom dashboards

Which should you pick?

Choose Fluent Bit if

  • You need log collection.
  • You want to start without paying.
  • You work on Web, Api.
  • You also want lightweight processing.
Fluent Bit review

Choose Loggly if

  • You need log aggregation.
  • You want to start without paying.
  • You work on Web, Api.
  • You also want real-time search.
Loggly review

Questions people ask

Is Fluent Bit or Loggly better?
Neither clearly leads. Fluent Bit starts at Free and Loggly at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Fluent Bit or Loggly?
Fluent Bit starts at Free and Loggly at Free.
Does Fluent Bit or Loggly run on more platforms?
Both run on Web, Api, so platform support will not decide this one for you.
Can I use Fluent Bit for free?
Both have a free tier, so you can try either at no cost before committing.
What is Fluent Bit best used for?
Fluent Bit is most often used for lightweight log and metric forwarding from containers and edge devices, kubernetes node level log collection with a small memory footprint, filtering and enriching telemetry before shipping it to a backend. Of those, lightweight log and metric forwarding from containers and edge devices and kubernetes node level log collection with a small memory footprint are not what Loggly is typically brought in for.
What can Fluent Bit do that Loggly cannot?
Fluent Bit covers Log collection, Lightweight processing, Data parsing, Event filtering. Loggly covers Log aggregation, Real-time search, Custom dashboards, Alert management. Both handle API, Webhooks, REST, Web support.

Answered from the vendors’ own pages

Fluent Bit: Is Fluent Bit free?

Yes, Fluent Bit is a CNCF graduated open-source project with no vendor lock-in and is freely available for download and use.

Source
Fluent Bit: Does Fluent Bit offer an Enterprise option?

The website navigation mentions an Enterprise section suggesting paid offerings exist, but specific pricing and details are not provided on the publicly available pages.

Source
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