Comparison

Fluent Bit vs Grafana Loki

On the evidence we track, Grafana Loki leads this comparison with a composite score of 68/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Fluent Bit full profile →Grafana Loki full profile →

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Fluent Bit53

★Grafana Loki68

Attribute comparison across 2 tools
Attribute	Fluent Bit	Grafana LokiLeader
Vioscale score	53 / 100low · 42%	68 / 100high · 76%
Pricing
Free tierpricing.free_tier	✓	✓
Modelpricing.model	commercial	freemium
Price levelpricing.price_level	free	free
Transparentpricing.transparent	-	✓
Integrations
Countintegrations.count	100	4
Security
Disclosure policysecurity.disclosure_policy	-	✓
Fedrampsecurity.fedramp	-	✓
Gdprsecurity.gdpr	-	✓
Iso27001security.iso27001	-	✓
Pcisecurity.pci	-	✓
Scorecardsecurity.scorecard	6.2	8.1
Soc2security.soc2	-	✓
Vulnerabilitiessecurity.vulnerabilities	Count: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=helm&package_name=stevehipwell-helm-charts-fluent-bit-collector%2Ffluent-bit-collector&per_page=100 · Last 12m: 0	Count: 1 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=go&package_name=github.com%2Fgrafana%2Floki&per_page=100 · Last 12m: 0 · Max severity: MODERATE
Reliability
Status pagereliability.status_page	-	✓
Adoption
Dependent reposadoption.dependent_repos	0	334
Github starsadoption.github_stars	8,062	28,789
Activity
Commits last 30dactivity.commits_last_30d	100	100
Release
Cadence daysrelease.cadence_days	8	7
Historyrelease.history	20 items	20 items
License
Spdxlicense.spdx	Apache-2.0	AGPL-3.0
Language
Primarylanguage.primary	C	Go
Market
Availabilitymarket.availability	-	Available worldwide · HQ US

Score

Vioscale score

Fluent Bit53 / 100low · 42%

Grafana Loki68 / 100high · 76%

Pricing

Free tier

Fluent Bit✓

Grafana Loki✓

Model

Fluent Bitcommercial

Grafana Lokifreemium

Price level

Fluent Bitfree

Grafana Lokifree

Transparent

Fluent Bit–

Grafana Loki✓

Integrations

Count

Fluent Bit100

Grafana Loki4

Security

Disclosure policy

Fluent Bit–

Grafana Loki✓

Fedramp

Fluent Bit–

Grafana Loki✓

Gdpr

Fluent Bit–

Grafana Loki✓

Iso27001

Fluent Bit–

Grafana Loki✓

Pci

Fluent Bit–

Grafana Loki✓

Scorecard

Fluent Bit6.2

Grafana Loki8.1

Soc2

Fluent Bit–

Grafana Loki✓

Vulnerabilities

Fluent BitCount: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=helm&package_name=stevehipwell-helm-charts-fluent-bit-collector%2Ffluent-bit-collector&per_page=100 · Last 12m: 0

Grafana LokiCount: 1 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=go&package_name=github.com%2Fgrafana%2Floki&per_page=100 · Last 12m: 0 · Max severity: MODERATE

Reliability

Status page

Fluent Bit–

Grafana Loki✓

Adoption

Dependent repos

Fluent Bit0

Grafana Loki334

Github stars

Fluent Bit8,062

Grafana Loki28,789

Activity

Commits last 30d

Fluent Bit100

Grafana Loki100

Release

Cadence days

Fluent Bit8

Grafana Loki7

History

Fluent Bit20 items

Grafana Loki20 items

License

Spdx

Fluent BitApache-2.0

Grafana LokiAGPL-3.0

Language

Primary

Fluent BitC

Grafana LokiGo

Market

Availability

Fluent Bit–

Grafana LokiAvailable worldwide · HQ US

Capabilities

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

Capability comparison for Log Management Software
Capability	Fluent Bit	Grafana Loki
Core
Pipeline role	Shipper	Backend
Search
Full-text log search	-	✗
Live tail / stream	-	✓
Processing
Structured parsing	✓	✓
PII redaction at ingest	-	-
Ops
Log-based alerting	-	✓
Dashboards / visualisation	-	✓
Storage
Retention tiering	-	-
Object-store columnar backend	-	✓
Interop
OpenTelemetry logs	Native	-
Query language	-	-
Deployment
Hosting	Cloud + self-hosted	Cloud + self-hosted

Core

Pipeline role

Fluent BitShipper

Grafana LokiBackend

Full-text log search

Fluent Bit-

Grafana Loki✗

Live tail / stream

Fluent Bit-

Grafana Loki✓

Processing

Structured parsing

Fluent Bit✓

Grafana Loki✓

PII redaction at ingest

Fluent Bit-

Grafana Loki-

Ops

Log-based alerting

Fluent Bit-

Grafana Loki✓

Dashboards / visualisation

Fluent Bit-

Grafana Loki✓

Storage

Retention tiering

Fluent Bit-

Grafana Loki-

Object-store columnar backend

Fluent Bit-

Grafana Loki✓

Interop

OpenTelemetry logs

Fluent BitNative

Grafana Loki-

Query language

Fluent Bit-

Grafana Loki-

Deployment

Hosting

Fluent BitCloud + self-hosted

Grafana LokiCloud + self-hosted

What each one is

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

Fluent Bit

Collects and routes telemetry data from distributed systems with high efficiency and built-in support for the OpenTelemetry standard.

Independently observed

Grafana Loki

Leader

Loki is a distributed log aggregation platform designed for simplicity and cost efficiency. It stores logs with only label metadata indexed rather than full-text content, making it straightforward to operate and integrate with Prometheus and Grafana for unified observability.

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 sourceFree tier

as of 2026-08-14verify ↗

Grafana Loki

Leader

from $0.05/moHybridFree tier

Free tier available. Pro from $19/month + metered usage with volume discounts. Enterprise from $25,000/year.

FreeFree
- All Grafana Cloud services with limited usage
- Community support
- 14 days retention for metrics, logs, traces, profiles, & k6 performance tests
ProFrom $19/month + usage with volume discounts
- Pay as you go above the Free tier
- 8X5 email support
- 13 months retention for metrics
- 30 days retention for logs, traces, profiles, & k6 performance tests
- Automatic volume discounts
EnterpriseContact sales
- Premium support
- Custom retention
- Deployment flexibility (Public Cloud, Federal Cloud, Bring Your Own Cloud)
- Scalable pricing based on annual commit and volume discounts

as of 2026-08-05verify ↗

Platform & deployment

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

Platform and deployment support comparison
Supports	Fluent Bit	Grafana Loki
WebPlatforms	✗	✓
macOSPlatforms	✓	✗
WindowsPlatforms	✓	✗
LinuxPlatforms	✓	✗
CLIPlatforms	✓	✓
Cloud / SaaSDeployment	✓	✓
Self-hostedDeployment	✓	✓
On-premiseDeployment	✓	✗
HybridDeployment	✓	✗

Platforms

Web

Fluent Bit✗

Grafana Loki✓

macOS

Fluent Bit✓

Grafana Loki✗

Windows

Fluent Bit✓

Grafana Loki✗

Linux

Fluent Bit✓

Grafana Loki✗

CLI

Fluent Bit✓

Grafana Loki✓

Deployment

Cloud / SaaS

Fluent Bit✓

Grafana Loki✓

Self-hosted

Fluent Bit✓

Grafana Loki✓

On-premise

Fluent Bit✓

Grafana Loki✗

Hybrid

Fluent Bit✓

Grafana Loki✗

Integrations

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

In common (2)

Kubernetes
Prometheus

Fluent Bit

12 total - 10 not shared

AWS S3
Google Cloud Storage
OpenTelemetry
Syslog
Windows Event Log
Podman
NVIDIA GPU
HTTP
Google Chronicle
Fluent Forward

Independently observed

Grafana Loki

Leader

4 total - 2 not shared

Grafana
Docker

Independently observed

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