Grafana k6 vs Loadster Synthetic Monitoring

Grafana k6

6.2 #64 in Log Management Software

6.4 #5 in Performance Testing Software

	Grafana k6	Loadster Synthetic Monitoring
Free plan	Yes	Yes
Free trial		Yes
Paid from	$19/mo	$77/mo
Platforms	Linux	api, extension, self-hosted, Web
Free plan	Yes	No
Load testing	Yes
Stress testing	Yes
Browser-based testing	Yes
Distributed load	Yes
API testing	Yes
Deployment model	hybrid
Paid from	19 /mo	29 /mo
OpenTelemetry support	Yes
Service map	Yes
Tail-based sampling	Yes
Kubernetes support	Yes
Network visibility	Yes
Application tracing	Yes
Kernel profiling	No
Supported operating systems	Linux
Log retention	30 days
Log pipelines	Yes
Archive export	Yes
Live log tailing	Yes
Deployment options	both
Structured log parsing	Yes
Profiling modes	both
Supported languages	C/C++, Go, Rust, Zig, Java, .NET, Python, Ruby, PHP, Node.js, Perl
CPU profiling	Yes
Memory profiling	Yes
Thread profiling	Yes
Core Web Vitals	Yes
Interaction tracking	Yes
Geographic breakdown	Yes
Error correlation	Yes
Data retention	30 days
Pricing metric	sessions
Logs support	Yes
Metrics support	Yes
Traces support	Yes
Transform rules	Yes
Multi-destination routing	Yes
Data enrichment	Yes
Deployment	self_hosted
SQL support	No
Retention policies	Yes
Horizontal scaling	Yes
Query languages	PromQL
Ingestion methods	Prometheus remote write; Grafana Agent; Prometheus Agent; OpenTelemetry; Influx; Graphite; Datadog
Check frequency		1 min
Response assertions		Yes
Multi-region checks		Yes
Private locations		Yes
Incident workflows		Yes