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Logging · head to head

Rollbar vs Sematext

Rollbar logo

Rollbar

Logging

Real-Time Error Tracking and Debugging

From
Free
Rated
-
Full reviewWebsite
Sematext logo

Sematext

Logging

Full Stack Observability Platform

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Rollbar the free plan allows 5,000 occurrences a month with 30 day retention; Sematext the $5 Basic plan caps ingestion at 500 MB a day and retains logs for 7 days
  • They diverge on capability: Rollbar covers Error tracking, Sematext covers Log aggregation.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Rollbar and Sematext actually diverge.

Attributes where Rollbar and Sematext differ
AttributeRollbarSematext
Pricing modelfreemiumusage-based
Founded20122007

Identical on both: starting price (Free), free tier (Yes), platforms (Web, Api), user rating (Not yet rated), category (Logging).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Rollbar

  • Error tracking
  • Real-time alerts
  • Error grouping
  • Source maps

Only in Sematext

  • Log aggregation
  • APM
  • Metrics monitoring
  • Anomaly detection

Both cover

  • API
  • Webhooks
  • REST
  • Web support
  • Api support

What people use each for

The jobs each tool is most often brought in to do.

Rollbar

  • Tracking application errors and exceptions across deploymentsnot Sematext
  • Grouping and alerting on production error occurrencesnot Sematext

Sematext

  • Centralised log management and search across servicesnot Rollbar
  • Infrastructure and application monitoring alongside logsnot Rollbar

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Rollbar

  • The free plan allows 5,000 occurrences a month with 30 day retention
  • Retention is a paid ladder rather than a setting, at up to 90 days on Essentials and up to 180 on Advanced
  • Advanced alerting, the RQL analytics query language and SCIM provisioning are excluded from the free plan
  • Enterprise requires a $4M annual plan minimum
  • No price is published for Essentials or Advanced, so only the free tier has a visible cost

Sematext

  • The $5 Basic plan caps ingestion at 500 MB a day and retains logs for 7 days
  • Ingestion and storage are billed on separate meters, at $0.10 per GB received and $0.15 per GB stored
  • Retention is a plan property rather than a setting, so keeping logs longer means moving tier
  • The published pricing page renders Standard and Pro figures from unresolved template placeholders, so only the Basic numbers are actually readable

Pricing, plan by plan

Rollbar

Free
  • FreeFree
    • 5K occurrences per month
    • 1K replays
    • Real-time alerts
  • Essentials$null/month
    • 10K-50M occurrences
    • 4K credits included
    • 90-day retention
  • Advanced$null/month
    • 8K credits
    • Adaptive alerts
    • RQL and Metrics API
  • Enterprise$null/month
    • 80M+ events
    • Direct Slack support
    • Priority SLAs

Sematext

Free
  • FreeFree
    • Log aggregation
    • APM
    • Metrics monitoring

Which should you pick?

Choose Rollbar if

  • You need error tracking.
  • You want to start without paying.
  • You work on Web, Api.
  • You also want real-time alerts.
Rollbar review

Choose Sematext if

  • You need log aggregation.
  • You want to start without paying.
  • You work on Web, Api.
  • You also want apm.
Sematext review

Questions people ask

Is Rollbar or Sematext better?
Neither clearly leads. Rollbar starts at Free and Sematext at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Rollbar or Sematext?
Rollbar starts at Free and Sematext at Free.
Does Rollbar or Sematext run on more platforms?
Both run on Web, Api, so platform support will not decide this one for you.
Can I use Rollbar for free?
Both have a free tier, so you can try either at no cost before committing.
What is Rollbar best used for?
Rollbar is most often used for tracking application errors and exceptions across deployments, grouping and alerting on production error occurrences. Of those, tracking application errors and exceptions across deployments and grouping and alerting on production error occurrences are not what Sematext is typically brought in for.
What can Rollbar do that Sematext cannot?
Rollbar covers Error tracking, Real-time alerts, Error grouping, Source maps. Sematext covers Log aggregation, APM, Metrics monitoring, Anomaly detection. Both handle API, Webhooks, REST, Web support.

Answered from the vendors’ own pages

Rollbar: How much does Rollbar cost?

Free plan is $0 with 5K occurrences per month. Essentials, Advanced, and Enterprise plans do not have published pricing and require contact with sales.

Source
Sematext: How much does Sematext cost?

Sematext uses a transparent usage-based pricing model. Customers can set a Max Daily Volume for automatic rejection of excess data to prevent unexpected charges and keep costs predictable. Specific tier pricing is available through their cost calculator tool.

Source
Rollbar: Is there a free trial?

Yes, a 14-day full access trial is available with 200K occurrences, 10K replays, and 15K credits.

Source
Sematext: How does Sematext's pricing compare to competitors?

Sematext is positioned as +3x cheaper than Datadog, with potential annual savings of $800,000 for customers logging more than 200TB/month and a reported 75% decrease in price per GB compared to alternatives.

Source
Rollbar: How are overages handled?

Three overage protection options are available: stop processing at plan limits, enable on-demand billing at standard rates, or set a custom overage budget cap.

Source
Sematext: Does Sematext offer a free trial?

Yes, Sematext offers a 14-day free trial with no credit card required, allowing you to test the platform before committing to a paid plan.

Source
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