Prometheus free tier includes Free OSS (Apache 2.0). CNCF graduated time-series monitoring and alerting… Not verified — the page we cite for this offer states no amount, tier or rate we can read. Compare with 24 alternatives in Monitoring.

Prometheus Free Tier 2026

Subtypes in Monitoring: metrics_backend — stores time-indexed measurements and serves queries over them; dashboards and alerting are built on top rather than sold as the product. We read that on 2026-09-01 from https://prometheus.io/, where it says: “Instrument, collect, store, and query your metrics for alerting, dashboarding, and other use cases.” How we use this.

Limits, pricing history, and 24 alternatives. Catalogue date August 2026. Last updated 2026-10-10.

Prometheus's free tier offers Free OSS (Apache 2.0). CNCF graduated time-series monitoring and alerting… The page we cite for this offer states no amount, tier or rate we can read when we last looked, on 2026-10-10, so we cannot confirm these terms today.

One of 59 Monitoring services we track. See our full Monitoring Free Tier Comparison →

Tier

Free OSS

Free Tier Details

Free OSS (Apache 2.0). CNCF graduated time-series monitoring and alerting. Pull-based metrics collection, PromQL query language, multi-dimensional data model

When You'll Outgrow Prometheus's Free Tier

When your usage exceeds the free tier limits, you'll need to upgrade.
At that point, the 24 alternatives in Monitoring are each listed with the free tier they offer, so you can compare what they give you against what you have outgrown.

Pricing Change History (0 recorded)

No recorded pricing changes for Prometheus — but the page we cite for this offer states no amount, tier or rate we can read when we last looked, on 2026-10-10, so nothing we have read describes these terms. Treat the empty history as a statement about our records, not about this vendor's pricing.

View all 513 pricing changes across all vendors →

Alternatives in Monitoring

How Prometheus compares against every one of the 24 we list, not against a selection of them. A surface with room for every member of a tied set may rotate their order. A surface with room for only some of them names none of them, because which ones it named would be the claim, and a claim seeded on the date is not the one we serve tomorrow. How we decide this.

Service	Free Tier	Stability
Prometheus	Free OSS	source unconfirmed
Middleware.io	Free Full-stack observability platform — free forever plan: 100 GB/month data (APM, logs, infrastructure, traces, RUM, synthetics, database, serverless), 1,000 RUM sessions/month, 20,000 synthetic checks/month, 14-day data retention, unlimited users	stable
syagent.com	Free Free server monitoring service with alerts and metrics. Up to 25 servers and 25 uptime monitoring instances.	stable
Elastic	Free OSS The Elastic Stack — Elasticsearch, Kibana, ingest and basic security — self-managed at no cost on the Free and Open tier under the Elastic License and SSPL, with community support. Platinum (existing customers only) and Enterprise are custom-priced and add machine learning, cross-cluster…	stable
skylight.io	Free Application performance monitoring — free for first 100,000 traces/month.	stable
Google Cloud Monitoring	Always Free Always Free: all non-chargeable Google Cloud metrics, first 1M monitoring API calls/month. Dashboards, alerting, and uptime checks for GCP resources Google Cloud's Free Tier requires a billing account. (From docs.cloud.google.com/free/docs/free-cloud-features, read 2026-10-07.) Usage beyond the Free Tier's monthly limits is billed at standard rates. (From docs.cloud.google.com/free/docs/free-cloud-features, read 2026-10-07.)	unrated
New Relic	Free Full observability platform — 100 GB data ingest/month, 1 full platform user, unlimited basic users, 500 synthetic checks, 8+ days retention	stable
Axiom	Personal Observability platform — 500 GB ingest/month, 25 GB storage, 30-day retention, 2 datasets, 1 user, 10 GB-hrs/mo query compute, 256 fields/dataset, 3 monitors, Email/Discord notifiers only	unrated
SigNoz	Free OSS OpenTelemetry-native observability with logs, metrics and traces in one tool. The community edition is free to self-host.	stable
360 Monitoring	Lite Server and website monitoring (formerly Nixstats) — free Lite plan: 1 server monitor, 5 site monitors, 10-minute check interval, 24-hour data retention, email alerts	stable
AppSignal	Free Application monitoring (APM, errors, logging) — Our free plan is perfect for startups, hobby, or side-projects 30K requests 1GB logging 5-day retention	caution
Grafana	Free OSS Grafana OSS — the self-hosted dashboarding and alerting front end, free under AGPL-3.0-only with Apache-2.0 exceptions. Unifies 150+ data sources into one dashboard and supports observability-as-code.	stable
BetterStack	Free 10 uptime monitors, 3 GB logs (3-day retention), 100K exceptions/mo, 5K session replays, 30 GB metrics, 1 status page, 1 responder	stable
Simple Observability	Free Powerful server monitoring in a unified platform for metrics and logs, with no setup complexity. Free for one server.	stable
Datadog	Free Infrastructure monitoring free for up to 5 hosts with 1-day metric retention	stable
bleemeo.com	Free Free for 3 servers, 5 uptime monitors, unlimited users, unlimited dashboards, unlimited alerting rules.	unrated
Jaeger	Free OSS Free OSS (Apache 2.0). CNCF graduated distributed tracing system.	source unconfirmed
Sematext	Basic (Free) Observability platform — Logs: 500 MB/day ingestion, 7-day retention. Monitoring: 3 hosts, 3 containers/host, 30-min data retention, 1 alert rule.	stable
Hyperping	Free Uptime and status page monitoring — free plan: 20 monitors (HTTP, port, ping, keyword), 5-minute check interval, 1 basic status page with real-time updates and subscriber notifications, 1 seat, 1 server monitoring agent, email and webhook alerts	stable
Sentry	Developer Developer tier: 1 user, 5K errors/month, 5M spans/month, 50 session replays, 5GB application logs, 1GB attachments	stable
netdata.cloud	Free Netdata is an open-source tool to collect real-time metrics. It's a growing product and can also be found on GitHub!	unrated
Grafana Cloud	Free Free tier includes access to all Grafana Cloud services with limited usage, 14-day retention, and community support. 10k metric series, 50 GB logs, and 50 GB traces are included.	stable
inspector.dev	Free A complete Real-Time monitoring dashboard in less than one minute with a free forever tier.	source unconfirmed
Xitoring.com	Free Superseded: As of 2026-08-28, xitoring.com reads: The page offers a 14-day free trial, and then paid plans starting at $4.99/mo for Uptime + SSL. We are not publishing our stored Xitoring.com terms beside it — our own pricing change record, discovered 2026-08-28, names them as the previous ones.	unrated — change unconfirmed
fivenines.io	Trial Linux server monitoring with real-time dashboards and alerting — no permanent free tier. 14-day free trial with no credit card required; paid plans from €19/month.	risky

Left out of this list: UptimeRobot (shares no subtype with this product), Pulsetic (shares no subtype with this product), Healthchecks.io (shares no subtype with this product), StatusCake (shares no subtype with this product), PagerDuty (shares no subtype with this product), Cronitor (shares no subtype with this product), Uptimia (shares no subtype with this product), OnlineOrNot (shares no subtype with this product), incident.io (shares no subtype with this product), StatusPile (shares no subtype with this product), assertible.com (shares no subtype with this product), Core Web Vitals History (none of this category's subtypes apply), deadmanssnitch.com (shares no subtype with this product), downtimemonkey.com (shares no subtype with this product), economize.cloud (none of this category's subtypes apply), incidenthub.cloud (shares no subtype with this product), linkok.com (none of this category's subtypes apply), loader.io (none of this category's subtypes apply), MonitorMonk (shares no subtype with this product), OntarioNet.ca CN Test (none of this category's subtypes apply), pagecrawl.io (shares no subtype with this product), pagertree.com (shares no subtype with this product), phare.io (shares no subtype with this product), pingbreak.com (shares no subtype with this product), Pingmeter.com (shares no subtype with this product), pingpong.one (shares no subtype with this product), robusta.dev (none of this category's subtypes apply), Servervana (shares no subtype with this product), sitesure.net (shares no subtype with this product), statusgator.com (shares no subtype with this product), SweetUptime (shares no subtype with this product), UptimeObserver.com (shares no subtype with this product), uptimetoolbox.com (shares no subtype with this product), Wachete (shares no subtype with this product). Each is still listed in Monitoring, with the vendor's own words we read that from on its page. How we decide this.

See full comparison →

Recompute today's order yourself. The order above is a permutation seeded only on the UTC date and the query key — no vendor name, slug, id or offer field is an input. The list above is every one of the 24 entries in that order, not a prefix of it. The algorithm is published, so anyone can reproduce this page's order without asking us.

date: 2026-11-14
query_key: alternatives:Monitoring:Prometheus
seed: 54881d79ef143aec1b101daf24cce2a7986b620e8635536310aefe469c65410c
tie_count: 14

Alternatives Guides Featuring Prometheus

Datadog Alternatives

Watch Prometheus for Pricing Changes

We do not push notifications. Every change we record is readable the moment it lands, and the JSON answer carries an ETag — send it back as If-None-Match and an unchanged answer costs one 304.

curl https://agentdeals.dev/api/changes?vendor=Prometheus
curl https://agentdeals.dev/pricing-changes/feed.xml?vendor=Prometheus

API docs →

Frequently Asked Questions

Is Prometheus free?

We cannot confirm that today. The page we cite for Prometheus states no amount, tier or rate we can read when we last looked, on 2026-10-10. Our stored record says Prometheus offers a free tier: Free OSS. Free OSS (Apache 2.0). CNCF graduated time-series monitoring and alerting. Pull-based metrics collection, PromQL query language, multi-dimensional data model. We have not confirmed these terms against the source we cite, so treat them as unverified.

What is Prometheus's free tier?

We cannot confirm that today. The page we cite for Prometheus states no amount, tier or rate we can read when we last looked, on 2026-10-10. Our stored record calls Prometheus's free tier "Free OSS". Free OSS (Apache 2.0). CNCF graduated time-series monitoring and alerting. Pull-based metrics collection, PromQL query language, multi-dimensional data model. We have not confirmed these terms against the source we cite, so treat them as unverified.

Is Prometheus's free tier reliable?

We cannot say. The page we cite for Prometheus states no amount, tier or rate we can read when we last looked, on 2026-10-10. Nothing we have read describes these terms, so we are not publishing a stability judgement for this vendor until that is fixed.

Is Prometheus's free tier good for production?

The page we cite for Prometheus states no amount, tier or rate we can read when we last looked, on 2026-10-10. We cannot confirm what this offer provides today, so we are not recommending it for production or for anything else until we can.

What changed in Prometheus's pricing?

We hold no recorded pricing changes for Prometheus, but the page we cite for this offer states no amount, tier or rate we can read when we last looked, on 2026-10-10, so that is a statement about our records rather than a positive signal.

What are the best free alternatives to Prometheus?

We publish no ranking of these. Nothing we record measures popularity or generosity, so naming a best or a top few would be our preference rather than our data. We hold 24 free alternatives to Prometheus in Monitoring, each listed above with its tier. Of those, 14 carry no recorded demerit and are indistinguishable under every signal we hold, so they are listed in an order that rotates daily, 10 are demoted with the reason named. Our ranking rule is published at /criteria.

When will I outgrow Prometheus's free tier?

When your usage exceeds the free tier limits, you'll need to upgrade. When you outgrow the free tier, evaluate paid plans against alternatives — sometimes a competitor's free tier covers what you need.

What category is Prometheus in?

Prometheus is categorized under Monitoring on AgentDeals. We list 24 other Monitoring services alongside it, every one of them on this page with its free tier and the stability we publish for it.