CircleCI vs GitHub Actions

When evaluating ci/cd services for your stack, uptime and reliability are critical factors. Both CircleCI and GitHub Actions are widely used in the ci/cd space, but how do they compare on actual measured reliability?

Based on DevHelm's continuous monitoring of their official status pages, CircleCI currently reports a 30-day uptime of 99.91% while GitHub Actions reports 99.98%. This gives GitHub Actions a slight edge in overall uptime for the past month.

Incident Frequency

Over the recent monitoring window, CircleCI has logged 28 incidents while GitHub Actions has recorded 66 incidents. Fewer incidents generally indicates more stable infrastructure, though the severity and duration of each incident matter as much as the raw count.

Mean Time to Resolution

CircleCI resolves incidents in an average of 2h 42m. GitHub Actions averages 2h 38m per incident. Lower resolution times mean less disruption to your application and users.

Component Coverage

CircleCI exposes 39 trackable components on their status page, compared to 12 for GitHub Actions. More components means more granular visibility into which parts of the service are affected during an outage. This is especially useful for targeted alerting and incident response.

Which Should You Choose?

Both CircleCI and GitHub Actions are production-grade ci/cd services used by thousands of companies. Your choice should factor in reliability alongside features, pricing, and ecosystem fit. DevHelm tracks both services continuously — add them to your workspace to receive real-time alerts when either experiences issues.