Feature checklists rarely decide anything. What decides it is the pricing metric, who has to write the tests, and which limitation you can live with.
Entry price
Free tier available
Free tierFree tier available
Free tierWhat drives the bill
The metric that actually scales your invoice.
Cheap if you already run Grafana Cloud; results are plain Prometheus metrics you already know how to use.
The free tier is genuinely usable. Costs come from full-platform user seats rather than check volume.
Free tier
Included in the Grafana Cloud free tier with a monthly check allowance.
100 GB of data ingest and one full-platform user free every month, permanently.
Open source
Apache-2.0 (agent)
Self-hostable
No-code authoring
Languages
Platforms
Fits teams
Adoption
Established
Grafana Labs · since 2021
Widely used
New Relic · since 2015
Strengths
Limitations
Best for
Teams already running Grafana Cloud and k6.
Teams wanting an observability platform with monitoring included and a real free tier.
All of these integrate with: PagerDuty, Slack, Terraform.
Pricing last reviewed August 2026 and is indicative only — confirm on each vendor’s own page.