Code Hosting & CI/CD · reliability comparison
GitHub Actions vs Harness: which is more reliable? (2026)
GitHub Actions and Harness are effectively tied on reliability (55.6 vs 56.4). Over the last 90 days GitHub Actions reported 20 incidents and Harness reported 25, with effective uptime of 98.91% and 99.04% respectively. GitHub Actions resolves incidents faster on average (2h 21m).
Data updated Nov 1, 2026 · How we score
| Metric | GitHub Actions | Harness |
|---|---|---|
| Reliability score | 55.6 | 56.4 |
| Rank (code hosting & CI platforms) | #9 | #8 |
| Uptime (90 days) | 98.91% | 99.04% |
| Incidents (90 days) | 20 | 25 |
| Partial / major outages | 8 | 4 |
| Avg time to resolve | 2h 21m | 4h 1m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where GitHub Actions and Harness differ
- Harness reported 25% more incidents than GitHub Actions over the last 90 days (25 vs 20).
- GitHub Actions had 8 partial or major outages, compared with 4 for Harness.
- GitHub Actions fixes problems faster: 2h 21m on average, against 4h 1m for Harness.
- GitHub Actions's longest outage on record lasted 4h 30m (Oct 21, 2026); Harness's lasted 8h 28m (Sep 14, 2026).
90-day uptime
GitHub Actions
Harness
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
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
Recent Harness incidents
- InformationalOct 28, 2026 · resolved in <1m
Intermittent CI Pipeline using VM Runner slowness and errors
- Degraded performanceOct 27, 2026 · resolved in 2h 32m
We are currently seeing delegate selection issue for VM infra executions
Affected: Continuous Integration Enterprise(CIE) - Self Hosted Runners
- Degraded performanceOct 19, 2026 · resolved in 35m
Affected: Continuous Delivery - Next Generation (CDNG), Continuous Integration Enterprise(CIE) - Self Hosted Runners, Continuous Integration Enterprise(CIE) - Mac Cloud Builds, Continuous Integration Enterprise(CIE) - Windows Cloud Builds, Continuous Integration Enterprise(CIE) - Linux Cloud Builds, Security Testing Orchestration (STO) +2 more
- Degraded performanceOct 15, 2026 · resolved in 11m
Degraded performance in UI execution graph in prod3
Affected: Continuous Delivery - Next Generation (CDNG)
- Degraded performanceOct 13, 2026 · resolved in 3h 23m
Prod1: Intermittent issue with IACM stages in some pipelines
Affected: Infrastructure as Code Management (IaCM)
- Degraded performanceOct 12, 2026 · resolved in <1m
Harness CI Cloud build issues when accessing Maven Central
Affected: Continuous Integration Enterprise(CIE) - Mac Cloud Builds, Continuous Integration Enterprise(CIE) - Mac Cloud Builds, Continuous Integration Enterprise(CIE) - Mac Cloud Builds, Continuous Integration Enterprise(CIE) - Windows Cloud Builds, Continuous Integration Enterprise(CIE) - Mac Cloud Builds, Continuous Integration Enterprise(CIE) - Mac Cloud Builds +12 more
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 →