Comparison

Fluent Bit vs Fluentd

On the evidence we track, Fluentd leads this comparison with a composite score of 57/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Machine formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.
Fluent Bit51
★Fluentd57
Score
vioscaleAI score
Fluent Bit51 / 100medium · 54%
Fluentd57 / 100medium · 54%
Pricing
Free tier
Fluent Bit✓
Fluentd✓
Model
Fluent Bitcommercial
Price level
Fluent Bitfree
Fluentdfree
Integrations
Count
Fluent Bit70
Fluentd500
Adoption
Dependent repos
Fluent Bit1
Fluentd3,044
Github stars
Fluent Bit8,155
Fluentd13,607
Activity
Commits last 30d
Fluent Bit100
Fluentd29
Release
Cadence days
Fluent Bit8
Fluentd70
History
Fluent Bit20 items
Fluentd20 items
License
Spdx
Fluent BitApache-2.0
FluentdApache-2.0
Language
Primary
Fluent BitC
FluentdRuby
Content
Faq
Fluent Bit6 items
Fluentd5 items

Capabilities

Feature-by-feature on the axes that matter for log management software. “-” means undocumented, not absent.

Core
Pipeline role
Fluent BitShipper
FluentdShipper
Search
Full-text log search
Fluent Bit-
Fluentd-
Live tail / stream
Fluent Bit-
Fluentd-
Processing
Structured parsing
Fluent Bit✓
Fluentd✓
PII redaction at ingest
Fluent Bit-
Fluentd-
Ops
Log-based alerting
Fluent Bit-
Fluentd-
Dashboards / visualisation
Fluent Bit-
Fluentd-
Storage
Retention tiering
Fluent Bit-
Fluentd-
Object-store columnar backend
Fluent Bit-
Fluentd-
Interop
OpenTelemetry logs
Fluent BitNative
Fluentd-
Query language
Fluent BitSQL
Fluentd-
Deployment
Hosting
Fluent BitCloud + self-hosted
FluentdSelf-hosted only

What each one is

The product in its own terms, so the numbers below have context.

Fluent Bit

A fast, lightweight data pipeline tool that processes and forwards logs, metrics, and traces with native OpenTelemetry support, optimized for cloud and containerized deployments.

Independently observed

Fluentd

Leader

Collects event data from various sources and forwards it to multiple destinations including databases, cloud services, and data platforms. Designed to centralize log infrastructure across applications and systems.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

Fluent Bit

Open source
as of verify ↗

Fluentd

Leader
Open sourceFree tier
as of verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platforms
macOS
Fluent Bit✓
Fluentd✓
Windows
Fluent Bit✓
Fluentd✓
Linux
Fluent Bit✓
Fluentd✓
CLI
Fluent Bit✓
Fluentd✓
Deployment
Cloud / SaaS
Fluent Bit✓
Fluentd✗
Self-hosted
Fluent Bit✓
Fluentd✓
On-premise
Fluent Bit✓
Fluentd✗
Hybrid
Fluent Bit✓
Fluentd✗

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

Fluent Bit

16 total
  • AWS S3
  • Google Cloud Storage
  • Kubernetes
  • OpenTelemetry
  • Syslog
  • Prometheus
  • Windows Event Log
  • Podman
  • NVIDIA GPU
  • HTTP
  • Google Chronicle
  • Fluent Forward
  • AWS CloudWatch Logs
  • Slack
  • Elasticsearch
  • ArvanCloud CloudLogs
Independently observed

Fluentd

Leader

Not documented yet.

Still deciding?

Fluent Bit or Fluentd: which one depends on you

A composite score cannot know your constraints. Describe them and both get re-weighted against what you actually need, with the evidence behind every position.

Free to run, no account needed to start. How the evaluation works

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.