NagiosUnmatched IT monitoring of nearly any device anytime, anywhere, all in one location.
vs
PrometheusOpen source monitoring system and time series database
Comparison · Observability · weekly run Nov 3
Nagios vs Prometheus
Which one do AI engines recommend, and how do they differ on price, fit and features?
The short answer
Prometheus is the stronger AI pick in Observability: it has a visibility score of 20.8 versus 0 for Nagios.
Choose Nagios if…
No clear advantage in the published data.
Choose Prometheus if…
- You want the brand AI engines rank higher (20.8 vs 0)
- Open-source, standards-driven telemetry
- Mature, widely adopted Prometheus ecosystem
- Strong OpenTelemetry and Prometheus support
AI visibility side by side
Latest weekly run · Nov 3
| Metric | Nagios | Prometheus |
|---|---|---|
| Visibility score | 0% | 20.8% |
| Change vs last week | New | New |
| Rank in Observability | #40 | #7 |
| Share of voice | 0% | 6.1% |
| Mentions this run | 0 | 36 |
| Positive in AI answers | — | 13% |
The stronger value in each row is marked with a ✓.
Visibility score trend
Weekly runs over the last 60 days
Nagios 0pp · Prometheus 0pp over 0 weekly runs.
Engine by engine
Prometheus leads on 3 of 3 engines
ChatGPT
AI Mode
Perplexity
NagiosPrometheus
Head to head in AI answers
0 engine answers name both brands
0Nagios ranked higher
0Prometheus ranked higher
Features, pricing & fit
| Dimension | Nagios | Prometheus |
|---|---|---|
| Deployment | Self-hosted on infrastructure you control, including air-gapped and regulated environments | Self-hosted; the server runs as a single binary with no external dependencies. |
| Support | Community forums, Customer Support Portal, Case Support under maintenance plans, Quickstart setup in 60 minutes | Community support, Training |
| Founded | 2007 | 2012 |
| Headquarters | Saint Paul, MN, United States | — |
| Employees | 11–50 | — |
| Funding | Bootstrapped | — |
| Best for | IT teams that need self-hosted monitoring of servers, network devices and services, with licensing by node count. | Teams monitoring cloud native and containerized applications, systems, and services |
Pros and cons
Themes from the AI answers that mention each brand
Nagios
Profile in progress.
Prometheus
- Open-source, standards-driven telemetry
- Mature, widely adopted Prometheus ecosystem
- Strong OpenTelemetry and Prometheus support
- Low cost and flexible
- Avoids vendor lock-in
- Self-hosting requires setup, storage, upgrades and maintenance
- Needs significant engineering time to scale and maintain
- Infrastructure and maintenance costs still apply
Data collected ·ChatGPT, Perplexity, Google AI Mode·coverage 100%·next run
Cite as: SlateIndex, “Nagios vs Prometheus”, https://slateindex.ai/compare/nagios-vs-prometheus-grafana, data of Nov 3, 2026. Licence: CC BY 4.0.