Compare Datadog and Sentry free tiers side by side. Datadog and Sentry serve different monitoring needs.

Datadog vs Sentry: Free Tier Comparison

Side-by-side comparison of free tiers, pricing changes, and stability. Catalogue dates here run to 2026-11-12.

Quick Verdict: Datadog and Sentry serve different monitoring needs. Datadog is infrastructure monitoring (hosts, metrics, APM) while Sentry is application error tracking (crashes, stack traces, replays). Most teams need both — they're complementary, not competitive.

Side-by-Side Comparison

Datadog stable stable

CategoryMonitoring

TierFree

Verified2026-11-12

Last read2026-11-12

Stabilitystable

Changes0 recorded

Infrastructure monitoring free for up to 5 hosts with 1-day metric retention

Sentry stable watch

CategoryMonitoring

TierDeveloper

Verified2026-08-11

Last read2026-11-02

Stabilitywatch

Changes2 recorded

Developer tier: 1 user, 5K errors/month, 5M spans/month, 50 session replays, 5GB application logs, 1GB attachments

Key Differences

Focus: Datadog monitors infrastructure (5 hosts free, metrics, logs, APM). Sentry tracks application errors (5K errors/month, stack traces, session replays, performance).
Free tier value: Datadog's free tier has only 1-day metric retention — effectively useless for trend analysis. Sentry's 5K errors/month with full stack traces is genuinely useful for small projects.
Pricing trap: At 100 hosts, Datadog Infrastructure Pro costs $1,500 a month, and with APM $4,600 a month, billed annually. Sentry scales by error volume, which is more predictable.
Team size: Sentry's Developer plan is limited to 1 user. Datadog's free tier allows up to 5 hosts with no user limit.

Pricing Change History

Datadog

No recorded pricing changes for Datadog.

Sentry

reduced effective 2025-08-27 medium impact

Sentry cut the included spans in all plans from 10M to 5M a month and added 5GB of logs to every plan, including the free Developer plan. Source ↗

restructured effective 2024-06-11 medium impact

Sentry changed how it bills tracing from performance units to span units. Source ↗

Our Recommendation

Choose Datadog if you need infrastructure monitoring across multiple hosts and want a unified observability platform — but be aware of the 1-day retention trap on the free tier.

Choose Sentry if you need error tracking with detailed stack traces, session replays, and performance monitoring for your application code.

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Frequently Asked Questions

Is Datadog or Sentry better for free tier?

Datadog and Sentry serve different monitoring needs. Datadog is infrastructure monitoring (hosts, metrics, APM) while Sentry is application error tracking (crashes, stack traces, replays). Most teams need both — they're complementary, not competitive.

What is Datadog's free tier?

Datadog offers a Free plan: Infrastructure monitoring free for up to 5 hosts with 1-day metric retention

What is Sentry's free tier?

Sentry offers a Developer plan: Developer tier: 1 user, 5K errors/month, 5M spans/month, 50 session replays, 5GB application logs, 1GB attachments

Should I choose Datadog or Sentry?

Choose Datadog if you need infrastructure monitoring across multiple hosts and want a unified observability platform — but be aware of the 1-day retention trap on the free tier. Choose Sentry if you need error tracking with detailed stack traces, session replays, and performance monitoring for your application code.