Code Hosting & CI/CD · reliability comparison
CircleCI vs GitHub Actions: which is more reliable? (2026)
CircleCI is more reliable than GitHub Actions, scoring 59.2 vs 55.6 out of 100. Over the last 90 days CircleCI reported 28 incidents and GitHub Actions reported 20, with effective uptime of 99.19% and 98.91% respectively. GitHub Actions resolves incidents faster on average (2h 21m).
Data updated Nov 1, 2026 · How we score
| Metric | CircleCI | GitHub Actions |
|---|---|---|
| Reliability score | 59.2 | 55.6 |
| Rank (code hosting & CI platforms) | #7 | #9 |
| Uptime (90 days) | 99.19% | 98.91% |
| Incidents (90 days) | 28 | 20 |
| Partial / major outages | 3 | 8 |
| Avg time to resolve | 2h 26m | 2h 21m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where CircleCI and GitHub Actions differ
- CircleCI reported 40% more incidents than GitHub Actions over the last 90 days (28 vs 20).
- GitHub Actions had 8 partial or major outages, compared with 3 for CircleCI.
- CircleCI's longest outage on record lasted 14h 36m (Oct 9, 2026); GitHub Actions's lasted 4h 30m (Oct 21, 2026).
90-day uptime
CircleCI
GitHub Actions
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent CircleCI incidents
- Degraded performanceOct 28, 2026 · resolved in 1h 3m
Delays for gen2 dedicated IP range jobs
Affected: Docker Jobs
- Degraded performanceOct 21, 2026 · resolved in 1h 24m
Increased Docker gen2 wait times
Affected: Docker Jobs
- Degraded performanceOct 20, 2026 · resolved in 2h 16m
Increased wait times for macOS jobs on m4pro.large
Affected: macOS Jobs
- Degraded performanceOct 14, 2026 · resolved in 1h 13m
Delays starting macOS jobs that use Xcode 26.6.0
Affected: macOS Jobs
- Partial outageOct 9, 2026 · resolved in 14h 36m
Delay in data appearing in UI and APIofficial update ↗
Affected: CircleCI API, CircleCI UI
- Degraded performanceOct 8, 2026 · resolved in 3h 35m
Elevated wait times for machine jobs
Affected: Machine Jobs
Recent GitHub Actions incidents
- Partial outageOct 30, 2026 · resolved in 1h 33m
Incident with Actions, Pages, and Webhooks
Affected: Webhooks, Actions, Pages
- Degraded performanceOct 26, 2026 · resolved in 9m
Incident with Actions, Issues, API Requests and Pull Requests
Affected: API Requests, Issues, Pull Requests, Actions
- Degraded performanceOct 23, 2026 · resolved in 36m
Delayed Actions status check results
Affected: Actions
- Degraded performanceOct 22, 2026 · resolved in 11h 2m
Affected: API Requests, Issues, Pull Requests, Actions, Packages
- Degraded performanceOct 22, 2026 · resolved in 1h 1m
Affected: Actions
- Major outageOct 21, 2026 · resolved in 4h 30m
Delays for Pull Requests and Webhook deliveriesofficial update ↗
Affected: Webhooks, Pull Requests, Actions
Other code hosting & CI platforms to consider
- Bitrise · #1 · 99.90% uptime
- Depot · #2 · 99.89% uptime
- GitLab · #3 · 100% uptime
- Bitbucket · #4 · 99.74% uptime
See the full most reliable code hosting & ci/cd platforms ranking →