Sematext Synthetics

6.7easy start · #19 of 41
in Synthetic Monitoring

Free to practise onnot on record
Free trialyes
Well documentedyes
Runs where you workyes

Runs on api, Linux, self-hosted, Web, Windows. Paid plans from $2/mo.

Sematext Synthetics is ranked #19 of 41 in synthetic monitoring on The Geeks Club. It runs on API, Linux, Self-hosted, Web, Windows. There is no free plan. A free trial is offered. Paid plans start at $2/mo.

Sematext Synthetics plans and pricing

All plans

Pay-As-You-Go $2/mo per HTTP monitor; $7 per Browser monitor Minimum $5 per month · 30 days retention · monitor count and retention affect price sematext.com · 2 Oct 2026

Compared on synthetic monitoring

Free plan: No
Paid from: $2/mo
Check frequency: 1 min
Response assertions: Yes
Multi-region checks: Yes
Private locations: Yes
Incident workflows: Yes

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The record

What it does: Sematext Synthetics actively monitors APIs, web URLs, websites, and user journeys from locations around the globe.
Monitor types: HTTP monitors record response data and timings, while Browser monitors run scripts that simulate user actions on websites.
API checks: HTTP monitors can validate response codes, headers, content, and timing conditions for monitored endpoints.
Browser monitoring: Browser monitors use Playwright with a headless Google Chrome browser in an isolated Node.js environment.
SSL monitoring: Synthetics checks certificate validity and expiry, and HTTP monitors also detect certificate changes.
Alerts and integrations: The product page lists Slack, OpsGenie, Zapier, and VictorOps as alert integration examples.
Vercel: The Vercel integration can create a Browser monitor for each selected Vercel project.
Sensitive data: Browser monitor credentials can be stored in AWS Secrets Manager and substituted into scripts only during execution.
Firewall limitation: Sematext says it does not provide a list of static IP addresses for firewall allowlisting.
HTTP monitor limit: An HTTP monitor run has 128 MB of memory, and its response body is trimmed to 2 MB.
Support: The product page says support is available through email, live chat, and phone calls.
Company history: Sematext's history page says the company launched as Sematext International in Spring 2010.
Founded: 2010
Headquarters: Brooklyn, New York, USA
Price from: $2/mo

Where it ranks on The Geeks Club

Best Synthetic Monitoring in 2026#19 of 41
Best API Monitoring Tools in 2026#16 of 27

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Sources

sematext.com/docs/synthetics/· checked 2 Oct 2026
sematext.com/api-monitoring/· checked 2 Oct 2026
sematext.com/docs/synthetics/browser-monitor/· checked 2 Oct 2026
sematext.com/docs/synthetics/ssl-certificate-monitor· checked 2 Oct 2026
sematext.com/docs/integration/vercel-synthetics-inte· checked 2 Oct 2026
sematext.com/docs/synthetics/user-journey-scripts/se· checked 2 Oct 2026
sematext.com/pricing/· checked 2 Oct 2026
sematext.com/docs/synthetics/http-monitor/· checked 2 Oct 2026
sematext.com/about/· checked 2 Oct 2026