Datadog RUM Pricing 2026: $4.50/1K Sessions + Gotchas

The fast facts

The pricing model

Pay per 1,000 sessions captured. Session replay bundled in price.

The annual-vs-on-demand split

Datadog publishes two per-session rates: $4.50 per 1,000 sessions when prepaid on an annual commit, $6.75 per 1,000 sessions when consumed on-demand. The 33% premium on on-demand exists because Datadog wants to forecast committed spend; teams that consistently exceed their annual baseline often end up at the on-demand rate for the overage, which can drive year-end bills significantly higher than the original quote.

For a workload of 5 million sessions per month, the annual-commit cost is $5 × $4.50 = $22.50/month per 1,000 sessions × 5,000 = roughly $22,500/month or $270,000/year. The same workload on on-demand pricing would cost roughly $33,750/month or $405,000/year. The annual commit becomes operationally important above ~1 million sessions per month.

Session replay is bundled (the good news)

Unlike Dynatrace (which charges $2.25/1K for basic RUM plus another $2.25/1K for replay) or Sentry (which has separate replay overages), Datadog bundles session replay into the per-session price. This is genuinely cheaper at high replay coverage. At 100% replay coverage, Datadog at $4.50/1K is competitive with Dynatrace at $4.50/1K combined, but the bundled model eliminates the surprise overage when the replay percentage drifts up.

Mobile RUM is a separate SKU

Datadog Mobile RUM is a different product, priced separately. The published per-session rate is similar but the meter is independent. If you instrument both web and mobile, your bill is the sum of the two product meters, there is no cross-product bundle discount that we could verify on the public pricing page.

Per-session billing scales hard with traffic spikes

The defining gotcha of Datadog RUM is that bills scale linearly with session volume, there is no plateau, no soft cap, no automatic sampling. A viral traffic event that doubles session volume for a week will double the bill for that week. Teams running on Datadog RUM typically configure budget alerts at 80% and 100% of the monthly commit so finance has warning before the overage hits the next invoice.

Retention

Datadog publishes 30-day retention as standard for RUM. Extended retention to 90 days or longer is available as a separately-priced add-on; the per-session rate increases. The full extended-retention pricing is not transparently published, expect to negotiate it as part of the annual commit conversation.

How Datadog RUM compares

• Versus Dynatrace RUM, same $4.50/1K headline at full replay, but Datadog bundles vs Dynatrace charges separately. Datadog wins on simplicity; Dynatrace wins if you only need basic RUM without replay (its $2.25/1K basic rate is half Datadog's).
• Versus Sentry, Sentry's $0.50/1K base rate is 9x cheaper than Datadog. Sentry is a viable alternative if your replay coverage is moderate and you can tolerate the error-monitoring-first product framing.
• Versus AWS CloudWatch RUM, AWS bundles replay free and is significantly cheaper (~$0.10/1K sessions effective), but the dashboards and integrations are much weaker than Datadog's.
• Versus Raygun, Raygun's $80/year Basic plan covers 100K sessions/month at an effective $0.80/1K, dramatically cheaper than Datadog. The trade-off is feature breadth, Datadog has session replay, Raygun does not.

When Datadog RUM is the right choice

• You already run Datadog for APM, logs, or infrastructure and want a single observability pane.
• You need session replay bundled into a per-session price (no separate overage meter).
• Your team is comfortable with per-session billing scaling and you have budget-alert discipline.
• You are committing to a multi-year annual deal large enough to negotiate below the $4.50/1K list rate.

When Datadog RUM is the wrong choice

• You only need Core Web Vitals capture, Cloudflare Web Analytics is free for that.
• Your monthly session volume is under 100K, Raygun's $80/year covers you for ~6 months of Datadog at $4.50/1K.
• You are price-sensitive and don't need session replay, Sentry or Dynatrace basic RUM is significantly cheaper.
• You operate in AWS-native mode and want CloudWatch dashboards, AWS CloudWatch RUM is much cheaper and integrates with the rest of your AWS observability stack.

For the APM side of Datadog, see our sister site's Datadog pricing breakdown. For the structural per-session pricing model comparison across all per-session vendors, see per-session pricing models.

Try it in the calculator

The RUM cost calculator includes Datadog alongside 17 other vendors. Enter your monthly page views, session replay coverage, retention, and sampling rate to see how Datadog's pricing compares head-to-head against the alternatives.

Where to go next

• Multi-vendor calculator — estimate Datadog's cost against 17 alternatives at your specific workload.
• Per-session pricing models — how Datadog's pricing model compares structurally to Datadog, Dynatrace, and Raygun.
• Quote-only vendors — the five RUM vendors that don't publish prices and the operational consequences.
• Hidden RUM costs — sampling, retention storage, replay storage, and overage gotchas across the category.
• Methodology — how we verified the Datadog pricing data shown above (verified 2026-06-16).