Graylog vs Prometheus
Updated June 2026 · A structured head-to-head comparison.
Open-source metrics and alerting.
The verdict
Both Graylog and Prometheus are credible monitoring tools, and the right pick comes down to your priorities.
Choose Graylog if you want broader platform coverage. Centralized log management and SIEM
Choose Prometheus if you'd rather have a higher overall rating (4.6/5). Open-source metrics and alerting.
Graylog vs Prometheus: side by side
| Dimension | Graylog | Prometheus |
|---|---|---|
| Starting price | Free | Free |
| Free plan | Yes | Yes |
| Pricing model | Open source | Open source |
| Best for | DevOps, Security Teams | DevOps Teams, Developers |
| Platforms | Self Hosted, Web, APIWinner | Self Hosted |
| Rating | 4.3/5 | 4.6/5Winner |
Graylog key facts
- Vendor
- Graylog
- Pricing
- Open source - Free
- Free tier
- Yes
- Platforms
- Self Hosted, Web, API
- Best for
- DevOps, Security Teams
- Editor rating
- 4.3 / 5
- Founded
- 2009
- Headquarters
- Houston, USA
Prometheus key facts
- Vendor
- CNCF
- Pricing
- Open source - Free
- Free tier
- Yes
- Platforms
- Self Hosted
- Best for
- DevOps Teams, Developers
- Editor rating
- 4.6 / 5
- Founded
- 2012
- Headquarters
- Open source (CNCF)
Frequently asked questions
Is Graylog better than Prometheus?
Neither is universally better - Prometheus edges ahead on overall rating, but the best choice depends on price, platforms, and your use case. See the side-by-side table above.
Is Graylog or Prometheus cheaper?
Graylog is the more affordable of the two to get started, at free. Graylog starts at free; Prometheus starts at free.
Can Graylog replace Prometheus?
Yes for most teams - both are monitoring tools with heavily overlapping features. The main trade-offs are pricing and platform support, covered in the comparison above.
Side-by-side software breakdowns and pricing changes - in your inbox monthly.