Prometheus vs Sentry
A detailed comparison to help you choose between Prometheus and Sentry.
Quick Verdict
4.2/5
Prometheus
0 reviews
4.2/5
Sentry
0 reviews
Both Prometheus and Sentry are equally rated at 4.2/5. Prometheus is the leading open source metrics monitoring system. Pull-based metrics collection, PromQL query language, and Alertmanager. Kubernetes-native. Self-hosted with integrations for 200+ services. Sentry is the industry standard for application error monitoring. Captures exceptions with full stack traces, performance monitoring, session replay, and release tracking. Open source.
Prometheus Open source metrics and alerting system | Sentry Application error tracking and performance monitoring | |
|---|---|---|
| Overview | ||
| Rating | 4.2 (0 reviews) | 4.2 (0 reviews) |
| Pricing model | free | freemium |
| Starting price | Free | Free tier available |
| Best for | DevOps and platform teams that want the Kubernetes-native open-source metrics standard they fully control, and accept running the storage and HA story themselves. | Development teams who want application errors caught, grouped, and traced before users report them, with a usable free tier to start |
| Features | ||
| IPv6 | ||
| DDoS protection | ||
| Automated backups | ||
| Snapshots | ||
| Managed option | ||
| Bare metal | ||
| GPU available | ||
| S3-compatible | ||
| Hourly billing | ||
| Free tier | ||
| Tags | ||
| Tags | free tieropen sourceself hostable | free tieropen sourceself hostableapi accessteam features |
| Visit Prometheus → | Visit Sentry → | |
Prometheus
Pros
- + Free and open source under Apache 2.0 with independent CNCF governance — no per-node or per-metric licensing
- + The industry-standard metrics stack: PromQL, multidimensional labels, and exporters for most software you already run
- + Kubernetes and Consul service discovery keep target configuration sane at container scale
- + Simple core: single autonomous nodes with local TSDB and a documented operational model
- + CNCF graduated since 2018 with a decade of production history and a very active contributor community
- + Honest documentation — storage constraints and the security model are stated plainly, including what the product deliberately does not do
Cons
- - No built-in long-term storage or global HA — Thanos, Cortex, or Grafana Mimir are separate operational projects
- - High-cardinality labels can blow up RAM and disk with no guardrails in the product
- - No built-in authentication or encryption; endpoints must be kept behind a perimeter by design
- - Multi-tenancy and access control are absent from the core
- - Community support only for the open-source download — SLAs come with paid managed offerings
- - PromQL and histogram handling have a genuine learning curve for teams new to the model
Sentry
Pros
- + Industry-standard error grouping and stack traces with code context
- + Free Developer plan at $0 including error monitoring and tracing
- + Framework SDKs make setup a one-afternoon job
- + EU data residency (Frankfurt) at no extra cost on all plans
- + Covers tracing, session replay, release health, cron and uptime monitors in one subscription
- + Self-hostable server code for teams that must run their own stack
Cons
- - Usage-based overage on errors, spans, and replays can spike bills unexpectedly
- - Real setup work needed to control noise (grouping, filters, sampling)
- - No public uptime SLA on self-serve plans
- - No APAC data region; some account metadata stays in the US even on EU orgs
- - Self-hosted deployment is operationally heavy and the license is not plain OSI open source
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