Sentry is a developer-focused error tracking and performance monitoring platform. See 2026 pricing plans, features, pros and cons, and top alternatives.
Sentry is a developer-focused application monitoring platform founded in 2012 that began as a small open-source error-tracking project before growing into a widely used commercial product operated by Functional Software, Inc. from San Francisco, California.
The platform is built around the idea that engineers, not just operations teams, should be the first to see production errors, complete with full stack traces, the exact release and commit that introduced a bug, and the user session context around the failure.
Beyond basic error tracking, Sentry has expanded into full application performance monitoring, covering distributed tracing across microservices, session replay of user interactions, structured logging, and uptime and cron job monitoring, positioning itself as a broader observability platform for engineering teams.
Sentry's error monitoring automatically groups similar exceptions into a single issue, attaches full stack traces resolved against source maps, and links each error back to the exact release and commit that introduced it, cutting down the time engineers spend reproducing bugs.
Distributed tracing lets teams follow a single request as it moves across multiple services, which is especially useful for microservice architectures where a slow or failing request can originate in a dependency several hops away from where it is first noticed.
Seer, Sentry's AI debugging agent, analyzes stack traces and surrounding code to suggest likely root causes and even proposed fixes, reducing the manual investigation work required for common classes of bugs.
Sentry's Developer plan is free and includes one user, 5,000 errors per month, 5GB of logs, 5 million trace spans, and 50 session replays, making it usable for solo developers and small side projects.
The Team plan starts at $26 per month when billed annually and removes the user limit while raising quotas to 50,000 errors per month, with additional data available on a pay-as-you-go basis. The Business plan starts at $80 per month billed annually and adds unlimited custom dashboards, 1,000 metric monitors with anomaly detection, and up to 90 days of data retention.
Larger organizations that need SAML and SCIM support, a dedicated technical account manager, or compliance certifications such as HIPAA, SOC 2, or ISO 27001 fall under Sentry's custom-priced Enterprise plan.
Sentry is used by software teams to monitor applications in production, catching errors, performance issues, and crashes with full context so engineers can fix them quickly.
Yes, Sentry offers a free Developer plan with one user and limited monthly error, log, and replay quotas; paid plans start at $26 per month billed annually.
Sentry provides official SDKs for JavaScript, Python, Node.js, Java, PHP, Ruby, Go, iOS, Android, and many other languages and frameworks.
Sentry uses usage-based pricing across errors, trace spans, session replays, and logs, layered on top of Developer, Team, Business, and Enterprise plan tiers.
Yes, Sentry offers an open-source, self-hosted version in addition to its managed sentry.io SaaS product.
Seer is Sentry's AI debugging agent that analyzes errors and code context to propose likely root causes and fixes.
Sentry focuses primarily on error tracking and code-level application monitoring for developers, while Datadog offers broader infrastructure and full-stack observability.
Sentry began in 2012 as an open-source project and is now operated as a commercial company, Functional Software, Inc., headquartered in San Francisco.