Is Sentry free? What it actually costs in 2026

What the free tier actually includes

• —1 user
• —5,000 errors per month
• —5 million tracing spans
• —50 session replays
• —5 GB of logs and 1 GB of attachments
• —1 uptime monitor and 1 cron monitor
• —30-day lookback

Where the wall is

The second person. The free plan is single-user, so the moment a colleague needs to see an error you are on Team — and on a busy app the 5,000-error allowance goes quickly too.

After that: Team at $26 a month billed annually ($29 month to month), adding unlimited users, API and third-party integrations, more dashboards and additional event volume. Business is $80 a month annually ($89 monthly); Business can be tried for 14 days with no credit card.

Can you self-host Sentry? Yes

Self-hosted Sentry is Fair Source under the Functional Source License, which becomes Apache 2.0 after two years; you may run it but not sell it as a service. It needs at least 4 CPU cores, 16 GB of RAM plus 16 GB of swap (32 GB recommended) and 20 GB of disk.

Questions people ask

What happens when you go over Sentry's free plan limit?

The extra events are dropped, not billed. Sentry's pricing docs say data sent after you have used up your reserved volume and pay-as-you-go budget “will be dropped and you won't be charged for it”, and that you lose monitoring for the rest of the billing cycle. Sentry's pay-as-you-go price tables list only Team and Business, so on the free Developer plan the 5,000-error allowance is a ceiling.

How many errors does Sentry's free plan allow?

5,000 errors a month on the Developer plan, for one user, with a 30-day lookback — alongside 5 million tracing spans, 50 session replays, 5 GB of logs, 1 GB of attachments and one uptime and one cron monitor (read 17 Oct 2026). Sentry calls it free “forever”; it is not a trial.

How much does Sentry Team cost?

$26 a month billed annually, or $29 month to month, read 17 Oct 2026. Team removes the one-user limit and adds third-party integrations and more event volume, which can be topped up with a pay-as-you-go budget. Business is $80 a month annually or $89 monthly, and can be tried for 14 days without a credit card.

What it actually takes to run one yourself

Real RAM against the documented minimum, monthly cost, setup time, and the one thing that catches people out.

What you are locked into

SDKs use the open Sentry protocol (DSN-based ingestion), which is itself a strength for switching — most alternatives below are wire-compatible and only require changing the DSN, not application code. The lock-in is mainly economic (event-based billing that scales with traffic) and licensing (FSL, not OSI), not data-format.

If you would rather not pay: GlitchTip