Sentry
Reviewed by techflak · July 29, 2026 · Updated July 29, 2026
Application monitoring and error tracking for production systems
Free ≤5k errors/mo + $26/mo
The default choice for error tracking — nothing else comes close for DX.
QUICK STATS
- Pricing:
- Free ≤5k errors/mo + $26/mo
- Open Source:
- Yes
- Self-hostable:
- Yes
- Has API:
- Yes
- Reviewed:
- 2026-07-29
SCORE BREAKDOWN
THE HONEST TAKE
What it is
Sentry is an application monitoring platform focused on error and performance tracking. Every uncaught exception, every slow database query, every failed API call — Sentry captures it, groups it, and links it to the exact line of code that caused it. It has SDKs for every major language and framework, with Next.js support that is unusually good.
Who it's for
- Any production app where you care about what's breaking
- Next.js and React teams — the source map integration is first-class
- Teams that want to tie errors to releases and deployments
- Anyone who's been debugging "it works on my machine" with console.logs
The good
The error grouping is the best in the category. Similar errors are automatically deduplicated and grouped. You don't drown in alert noise. You see "this function has thrown 412 times in the last 24h" not 412 individual alerts.
Source maps work. This sounds basic but it isn't. Sentry's Next.js SDK handles source map uploading at build time so your production errors show the original TypeScript, not minified junk. This alone is worth the setup cost.
Performance monitoring is genuinely useful. Transaction tracing, N+1 query detection, slow endpoint flagging — not afterthought features but things that have saved real debugging hours.
Release tracking. Tag errors to releases, see if a deploy made error rates spike, set up alerts for error rate thresholds. The deployment pipeline integration is well thought out.
The bad
Free tier runs out fast. 5,000 errors/month sounds like a lot until you have a JS error that fires on every page load. You'll burn through it quickly if something breaks on a popular page. The $26/mo plan is 50k errors — still finite.
The UI has gotten complex. Sentry has grown into a full observability platform. The dashboard has a lot of surface area and settings. It's not overwhelming, but it's not as focused as it used to be.
Performance pricing adds up. Error tracking and performance monitoring are separately metered on higher plans. Budget both if you want the full picture.
SDK size. The Sentry Next.js SDK is not tiny. It adds weight to your bundle and a small startup overhead. Use sampleRate to control it.
Pricing reality
Free: 5k errors/month, 1 user, 1 project. Fine for side projects with low traffic. Developer plan at $26/mo covers 50k errors, replays, and more projects — this is where most solo devs land. At real scale, the per-event pricing becomes significant; evaluate Grafana Cloud or self-hosted Sentry at that point (it's OSS and self-hostable).
Verdict
Sentry is the default answer for error tracking and you'd need a good reason to pick something else. The DX, the source map integration, the grouping — it's all genuinely better than competitors. The pricing beyond the free tier is the only real friction point, but for any production app with real users, not knowing what's broken is far more expensive than $26/month.