Prometheus vs Datadog Pricing (2026)
Compare / Prometheus vs Datadog
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Team size
25 seats

Prometheus vs Datadog

Observability pricing comparison · 2026

Prometheus pricing ranges from $0–$2500/month, while Datadog ranges from $0–$41/host/month. These products use different pricing models (Per-seat subscription vs Hybrid (seat + usage)), so a direct price comparison isn't meaningful — costs depend on usage volume and mix.

Visit
See pricing on each vendor's site
Above-the-fold path — each link opens the vendor's pricing page in a new tab.
Visit Prometheus pricing
Free plan limits → Discount programs →
Visit Datadog pricing
Free plan limits → Discount programs →
Compare
2 products · Observability
Side-by-side · live
Prometheus
Prometheus is the leading open-source systems monitoring and alerting toolkit, originally
verified 13d ago
$20K $152K
View pricing →
Datadog
Datadog pricing ranges from free to $27/host/month for infrastructure monitoring as of Mar
verified 5d ago
$20K $152K
View pricing →
Verdict · Vendr median · year 1
Prometheus saves $132K vs Datadog · 25 seats
Cheapest $20K
Spread 87%
Estimated license cost
at 25 seats
List price × seats. Click a tier below to lock it.
AWS Managed Service for Prometheus
$27K/yr
year 1 license · $90/seat
Infrastructure Enterprise
$8.1K/yr
year 1 license · $27/seat
What buyers actually pay
median, annual
Vendr deal-flow data. The real benchmark, not list price.
↓ Lowest median
Median annual
$20K/yr
Vendr · n=3 · limited data
Median annual
$152K/yr
Vendr · n=1,023 avg 10% negotiated
REF · 01

Sources & confidence

Every dollar amount and contract clause below traces back to a sourced fact. We don't manufacture composite scores.

Where this data comes from
Vendr · TrustRadius · Reddit · BBB · official docs
Sources 16 sourced facts
15 hidden-cost · Vendr median
Last verified 1w ago
Confidence High confidence
Sources 29 sourced facts
25 hidden-cost · 3 contract · Vendr median
Last verified 5d ago
Confidence High confidence
REF · 02

Plans at a glance

Every tier per product. Lock one to drive the cost row above and reveal a tier-specific outbound CTA.

Tier ladder
Click a tier to lock the cost row to it. Locking surfaces a tier-specific Visit CTA.
REF · 03

Hidden costs

Each cost is severity-ranked, with the dollar range quoted from its source (Vendr, Reddit, TrustRadius, BBB, official docs) — never our estimate.

Beyond the sticker
Severity-ranked, sourced
5 documented
  • Engineering Operational Overhead (Self-Hosted)
    $20,000-$60,000/year in engineering time
    2 sources
  • Managed Service Cost Shock from Scrape Interval Misconfiguration
    4-5x cost increase vs expected
    2 sources
  • Managed Prometheus Expensive at Scale
    5-10x cost vs self-hosted at scale
    3 sources
  • Horizontal Scaling Requires Additional Infrastructure
    10-30% of license costs
    1 source
  • Infrastructure & Server Costs for Self-Hosting
    $150-$500/month
    1 source
5 documented
  • Per-metric and custom metrics pricing
    $1,000-$50,000 annually in custom metrics overages
    3 sources
  • Whole month billing for transient infrastructure
    $18-$54 per additional node per month, regardless of uptime
    1 source
  • Agent logs count toward quota
    $3-$8/million log lines
    1 source
  • Wild-carded telemetry at onboarding
    20-30% of initial costs
    1 source
  • Opaque and complex pricing model
    20-50% of base license costs
    2 sources
REF · 04

Contract terms

The fine print, surfaced. Green = buyer-friendly. Each clause backed by a quoted source.

Prometheus
Datadog
Auto-renewal
✓ No
Yes
Cancellation
—
—
Commitment
None for self-hosted; managed services (AWS AMP, GCP) are pay-as-you-go
Typically 1 year, 2-3 year options available
Price escalation
No published schedule for self-hosted; cloud managed service pricing subject to provider changes
5% annual uplift reported at renewal without growth. Legacy pricing may be maintained with multi-year commitments.
Can downgrade
✓ Yes
No
Based on 3 verified sources (Vendr · TrustRadius · BBB)
REF · 05

What users say

Aggregated, with sample sizes. We use whichever review platform has data.

User reviews
TrustRadius · Trustpilot · G2
No public ratings yet
Best for
Teams with DevOps/SRE expertise who want full control and can manage infrastructure overhead
Watch out
High cardinality metrics cause memory exhaustion on a single instance
No public ratings yet
Best for
Getting started
Watch out
Opaque and convoluted pricing model
Decide
Get a quote from each vendor
Each link opens the vendor's pricing page in a new tab.
Visit Prometheus pricing
Free plan limits → Discount programs →
Visit Datadog pricing
Free plan limits → Discount programs →
License cost is computed from publicly listed plans (real math, list price × seats). Median annual cost is from Vendr's deal flow when available — see source badges. Hidden costs and contract terms each cite their own sources. We do not invent composite scores.
Observability

Prometheus

$0–$2500
/month
6 plans · Free tier
Full pricing breakdown →
VS
Observability

Datadog

$0–$41
/host/month
7 plans · Free tier
Full pricing breakdown →
⚖

Different Pricing Models

Direct price comparison isn't meaningful here — Prometheus uses Per-seat subscription pricing while Datadog uses Hybrid (seat + usage) pricing. Your actual cost will depend on usage volume, team size, or both. Here's each product in its native unit.

Per-seat subscription

Prometheus

$0–$2500 / month
See full Prometheus pricing →
vs
Hybrid (seat + usage)

Datadog

$0–$41 / host/month
See full Datadog pricing →

Prometheus and Datadog both operate in the observability category. This page compares their list pricing.

Plan-by-Plan Pricing

Plan Prometheus Datadog
Self-Hosted (Open Source) Free /month Free /month
Grafana Cloud Free Free /month $18 /host/month
Grafana Cloud Pro $19 /month + usage $27 /host/month
AWS Managed Service for Prometheus $90 /month (usage-based, ~1B samples) $27 /host/month
Google Cloud Managed Service for Prometheus $60 /month (usage-based, ~1B samples) $41 /host/month
Enterprise / Custom (Chronosphere, Sysdig, etc.) Custom $31 /host/month
Log Management — $0.10 /GB ingested

Cost at Scale

Total cost of ownership — licenses, implementation, and hidden costs included.

Prometheus

12 scenarios
$50
Self-Hosted Small Team (10 services)
$100/month
$400
Self-Hosted Production (High Availability)
$800/month
$0/month
Grafana Cloud Free Tier
See all 12 scenarios →

Datadog

5 scenarios
$2,800 Year 1 ($1,800 licenses + $600 log ingestion + $400 onboarding tuning)
Small Team (10 hosts, Pro annual)
$38,400 Year 1 ($13,800 infrastructure + $18,600 APM + $6,000 log management)
Mid-Size with APM (50 hosts, Enterprise annual)
$150,000 Year 1 ($55,200 infrastructure + $74,400 APM + $20,400 logs and custom metrics)
Large Deployment (200 hosts, Enterprise full stack)
See all 5 scenarios →

Market Intelligence

Prometheus

Median annual cost
$20,000
Based on
3 deals

Datadog

Median annual cost
$152,340
Average negotiated discount
10%
Based on
1023 deals

Hidden Costs

Beyond the sticker price — what catches buyers off guard.

Prometheus 8 hidden costs

high
Engineering Operational Overhead (Self-Hosted) $20,000-$60,000/year in engineering time
critical
Managed Service Cost Shock from Scrape Interval Misconfiguration 4-5x cost increase vs expected
high
Managed Prometheus Expensive at Scale 5-10x cost vs self-hosted at scale
medium
Horizontal Scaling Requires Additional Infrastructure 10-30% of license costs
medium
Infrastructure & Server Costs for Self-Hosting $150-$500/month
See all Prometheus hidden costs →

Datadog 17 hidden costs

high
Per-metric and custom metrics pricing $1,000-$50,000 annually in custom metrics overages
critical
Whole month billing for transient infrastructure $18-$54 per additional node per month, regardless of uptime
medium
Agent logs count toward quota $3-$8/million log lines
high
Wild-carded telemetry at onboarding 20-30% of initial costs
high
Opaque and complex pricing model 20-50% of base license costs
See all Datadog hidden costs →

Contract Terms

Term Prometheus Datadog
Auto-renewal No Yes
Cancellation — —
Minimum commitment None for self-hosted; managed services (AWS AMP, GCP) are pay-as-you-go Typically 1 year, 2-3 year options available
Price escalation No published schedule for self-hosted; cloud managed service pricing subject to provider changes 5% annual uplift reported at renewal without growth. Legacy pricing may be maintained with multi-year commitments.
Can downgrade Yes No

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Prometheus

Datadog

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