Relyv.ai vs Sentry Replay
Sentry Replay is a session-replay add-on bolted onto an error-monitoring platform. Relyv.ai is a standalone, AI-native session-replay platform — pixel-perfect DOM replay, every console + network event, AI-drafted bug tickets, Playwright test generation, 14 tracker integrations, and a <30KB SDK. Pick Relyv when replay is the centerpiece of how you fix bugs, not a secondary tab.
They capture pixels. Relyv captures every layer of the same session.
| Feature |  | Sentry Replay |
|---|---|---|
| Standalone session replaySentry Replay requires the Sentry error-monitoring product as the host. Relyv is a primary product. | Yes | Bolted onto error-monitoring suite |
| SDK weightRelyv's SDK is smaller; Sentry's replay is an add-on bundle on top of @sentry/browser. | <30 KB gzipped | ~50–60 KB on top of error SDK |
| Capture event typesBoth capture the core stack; Relyv additionally captures Service Worker lifecycle, visualViewport, PointerEvent pressure/tilt, Battery, and offline transitions. | 38 distinct events | DOM mutations, network, console, errors |
| AI session summarySentry has AI-suggested fixes for errors; Relyv summarizes the whole session (intent → friction → outcome). | Every session, AI-drafted | Not available |
| AI bug report → ticketRelyv pre-fills the ticket title, repro steps, console + network evidence, and a Playwright spec. | Auto-drafted into 14 trackers | Manual export to Jira / Linear |
| Playwright test generationGenerate a Playwright/Cypress spec from any session. | Replay → runnable spec, one click | No |
| Conditional live patchesShip a JS patch to production without a deploy. | Patches with risk DAG + sandbox simulator | No |
| Frustration detection | Rage clicks, dead clicks, scroll thrash, form abandons — MLP-scored | Rage clicks only |
| PII masking | On-device Luhn + 12-category regex (SDK); ONNX/WebGPU GLiNER with the extension | Mask all text/media by default + selector overrides |
| Cross-session intelligence | "147 sessions hit the same error, $13K at risk, root cause line 42" | Replay tied to a specific error event |
| Diff any two sessions | DOM + network + console diff, side-by-side | No |
| Self-contained .html exportSentry replays are viewable inside the Sentry UI; Relyv exports work offline forever. | One offline file with viewer embedded | No |
| Multi-surface captureRelyv's extension records any site (yours or anyone's); the desktop app captures native macOS / Windows apps. | Web · SDK · Chrome extension · desktop · iOS · Android | Web + mobile SDKs |
| MCP-native (Claude / Cursor)Relyv exposes session intelligence as a Model Context Protocol tool. | Yes | No |
| Pricing modelSentry charges per-replay above plan quota; Relyv's tiers include large monthly session allotments. | Free 1,000 sessions/mo; Starter $29; Pro $99; Business $399 | Replay add-on: included quota + $0.0029 per replay over quota |
| Standalone usageYou cannot buy Sentry Replay alone; it ships as a feature on Sentry plans. | Yes — primary product | Requires Sentry error-monitoring subscription |
Comparison based on publicly available product documentation, pricing pages, and feature lists from sentry.io as of 25 May 2026. Sentry Replay is a registered feature of Sentry (Functional Software, Inc.). Relyv capabilities are implemented in the Relyv SDK + Angular viewer + Go microservices stack. Feature sets may change over time. Visit Sentry Replay
The Relyv Advantage
Replay is the centerpiece, not a side tab
Sentry positions replay as evidence attached to an error. Relyv positions replay as the workspace — every session is a first-class object you watch, diff, share, patch, and turn into a runnable test. The architecture follows: full DOM substrate, 38 event types, AI summaries on every session, not just the ones tied to a captured exception.
AI does the bug report — not just the fix suggestion
Sentry's AI suggests code fixes for stack traces. Relyv's AI drafts the full bug ticket: title, severity, repro steps, console + network evidence, root cause line, and a runnable Playwright spec — pre-filled into Linear, Jira, GitHub, or 11 other trackers.
Live patches without a deploy
Relyv ships conditional JavaScript patches to production behind a risk DAG + sandbox simulator. Sentry has no equivalent — fixes still require an engineering deploy.
Diff any two sessions
Compare a production session against a staging session — DOM, network, console — line by line. Spot the regression in seconds. Sentry replays are isolated.
Edge-AI PII shield
PII is classified and scrubbed by an on-device LLM (GLiNER on ONNX/WebGPU when the Relyv extension is installed) before any bytes leave the browser. Plus 12-category regex + Luhn validation in the bare SDK. Sentry masks text and media by default but does not run a model on-device for entity recognition.
Standalone pricing — no host-product lock-in
Buy Relyv on its own. Free 1,000 sessions/mo, Starter $29, Pro $99, Business $399. Sentry Replay requires a Sentry plan; the replay quota is on top of error-monitoring spend.
A Closer Look
Where Sentry Replay wins
If your team is already on Sentry for error monitoring and you want replay attached to error events, Sentry Replay is the lowest-friction add. The replay viewer ties directly to stack traces in Sentry Issues — one click from exception to session. That tight integration is meaningful if Sentry is already your incident-response substrate.
Where Relyv wins
When session replay is the workflow — not the evidence. Standalone product (no error-monitoring lock-in), 38 capture event types, AI-drafted bug tickets in 14 trackers, Playwright test generation, conditional live patches with risk DAG + sandbox simulator, side-by-side session diff, self-contained .html export, MCP-native AI access, and a <30KB SDK. Plus the extension records any site (yours or anyone's) and the desktop app captures native macOS / Windows apps.
When to use both
Some teams keep Sentry for error monitoring (it remains a category leader for exception tracking) and add Relyv for the session-replay + AI + ticket-drafting workflow. The SDKs do not conflict — they capture different signal layers (exceptions vs. full session DOM/network/console). Sentry tells you "this exception fired"; Relyv tells you "here is the full session that led to it, the AI summary, the draft ticket, and the test that pins it."
Common Questions
Is Relyv.ai a Sentry Replay alternative for teams that already use Sentry?
Yes — and many teams run both. Sentry remains a strong exception-tracking product; Relyv is a standalone session-replay + AI + bug-drafting + test-generation platform. The SDKs do not conflict (different signal layers). If you want replay tied directly to Sentry exceptions in one UI, stay on Sentry Replay. If you want session replay as the centerpiece of how your team fixes bugs — with AI-drafted tickets, Playwright tests, and live patches — Relyv is purpose-built for that.
Can I buy Relyv without an error-monitoring product?
Yes. Relyv is a standalone, AI-native session-replay platform. There is no host product, no error-monitoring SKU you have to buy first, and no replay-quota-on-top-of-something-else pricing surprise. Free 1,000 sessions/mo, Starter $29, Pro $99, Business $399.
How does Relyv's SDK weight compare to Sentry's replay add-on?
Relyv's SDK is <30 KB gzipped, standalone. Sentry's replay is an add-on bundle (~50–60 KB) on top of the @sentry/browser SDK; combined weight runs noticeably larger. Both async-load to keep Time to Interactive clean.
Does Relyv capture console + network like Sentry does?
Yes — fetch, XMLHttpRequest, WebSocket, Server-Sent Events, and sendBeacon, plus console.log/info/warn/error/debug with stack traces. Relyv adds Service Worker lifecycle, visualViewport (virtual-keyboard tracking), PointerEvent with pressure + tilt, Battery, and offline transitions on top.
Does Relyv have AI like Sentry's suggested fixes?
Different shape. Sentry's AI suggests code fixes for stack traces. Relyv's AI summarizes whole sessions (intent → friction → outcome), drafts complete bug tickets into 14 trackers, generates runnable Playwright/Cypress specs from sessions, and proposes conditional live patches with a sandbox-simulator preview. Cloud inference on Relyv's own infrastructure for SDK customers; on-device via ONNX/WebGPU when the Relyv extension is installed.
How does PII masking compare?
Sentry masks all text + media by default and exposes per-selector overrides — defensive defaults. Relyv masks PII on-device through 12-category regex + Luhn validation in the SDK; with the Relyv browser extension, an on-device ONNX/WebGPU GLiNER model does named-entity recognition on top. Both meet GDPR + HIPAA defaults; Relyv's extension path additionally catches free-form PII that regex misses (e.g., names embedded in support-chat text).
Can I share a Relyv recording with someone who doesn't have a Sentry / Relyv account?
Yes. Every Relyv session exports as one offline .html file with the viewer embedded inline — DOM, network, console, AI summary, and all 38 event types replay in any browser, no account, no internet. Sentry replays are viewable inside the Sentry UI.
How does Relyv's pricing compare?
Relyv: Free 1,000 sessions/mo, Starter $29/mo ($24 annual), Pro $99/mo ($82 annual), Business $399/mo ($332 annual), Enterprise on request. Sentry Replay is an add-on with a per-plan included quota and per-replay overage pricing on top of Sentry error-monitoring spend. Standalone-replay teams typically find Relyv's flat-tier pricing easier to model.
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