Sentry vs Vercel
Both are developer tools. Here is what separates them.
What Sentry is
Sentry captures application errors and performance data from code running in production. An error report includes a stack trace that shows the values of local variables at each frame, so the state that produced the failure is visible without reproducing it locally, and breadcrumbs record the sequence of events that led up to it. Distributed tracing links a single request across every service and function call it touches, with the SDK sampling rate set through tracesSampleRate. From that data Sentry detects performance problems on its own, including N plus 1 queries, slow database calls and uncompressed assets. Logs can be filtered on structured attributes such as a customer id rather than by matching raw strings. Session Replay covers web frameworks and mobile through React Native, Android, iOS and Flutter, and flags rage clicks and dead clicks where a user taps an element that does not respond. It masks all text, inputs and media by default before a recording leaves the user's browser. Release Health reports crash free session rates, adoption per version and failure rate. SDKs cover JavaScript, Python, Java, Kotlin, PHP, Ruby, Go, Rust, Elixir, Perl, Scala, .NET and native C and C++, along with mobile and game platforms including Android, Apple, React Native, Flutter, Unity, Unreal Engine and Godot. Sentry integrates with GitHub, Jira and Slack, and can assign a new issue automatically to the developer whose commit introduced it. The free Developer plan is limited to a single user seat and includes 5,000 errors, 5 million spans, 50 session replays, 5GB of logs, 5GB of application metrics, one uptime monitor, one cron monitor, 1GB of attachments and 10 custom dashboards, with a 30 day lookback on data. The Team plan costs $26 per month on annual billing, places no limit on seats, raises the error allowance to 50,000 and extends retention to a 90 day lookback. The Business plan costs $80 per month on annual billing and adds unlimited custom dashboards and 1,000 metric monitors, against 20 on Team. Enterprise is quoted individually with custom quotas on every dimension. Usage above an allowance is charged separately: logs and application metrics beyond the included 5GB cost $0.50 per additional GB, extra uptime monitors $1.00 each and extra cron monitors $0.78 each.
What Vercel is
Vercel is a hosting and deployment platform for web applications. Connect a Git repository and every push builds and deploys automatically, with a preview environment created for each one so a change can be checked at a real URL before it reaches production. Deployments are unlimited, and the controls around them matter as much as the build itself. Rolling releases push a new deployment out incrementally rather than all at once. Rollbacks return to a previous deployment when something goes wrong in production. Deployment Protection keeps builds that are not meant to be public from being reached. Environments are managed separately for local, preview, production and custom cases, and environment variables are typed as either Config or Secret. Elastic build machines make use of Turborepo cache data. Serving runs over a globally distributed delivery network with automatic routing, automatic compression, image optimisation and SSL/TLS. Pages support incremental static regeneration, refreshed on a schedule or on request. Functions scale dynamically and can be configured by region; on the Bun runtime they go up to 5GB in size and 30 minutes in duration. Private inter-region networking is available, as is Vercel Sandbox, which runs globally. A customisable web application firewall handles attacks and unwanted traffic through rules you set. An AI Gateway reaches hundreds of models through a single endpoint, and an AI SDK wires language models into an application with streaming and tool calling. The Chat SDK connects to Notion, Slack Enterprise Grid and XChat. Vercel Connect links applications to more than 100 services. The Hobby plan is free and includes automatic CI/CD and one million function executions a month. Pro is $20 a month, with ten million executions, $20 of included usage credit and team collaboration features. Enterprise is custom priced and adds a 99.99% SLA, guest and team access controls, up to 100 team members, custom invoicing and advanced support. Plans include 10GB of Blob storage a month and one million observability observations. Traffic analytics and spend management tools come with the platform. Named customers give a sense of the range: Notion runs untrusted code on it at scale, Ramp holds 100% uptime through traffic surges, and the Weather Company serves real-time forecasts from it. Investors include Accel and Google Ventures.
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