Code Hosting & CI/CD · reliability comparison
Harness vs Semaphore: which is more reliable? (2026)
Harness and Semaphore are effectively tied on reliability (56.4 vs 54.9). Over the last 90 days Harness reported 25 incidents and Semaphore reported 22, with effective uptime of 99.04% and 98.92% respectively. Harness resolves incidents faster on average (4h 1m).
Data updated Nov 1, 2026 · How we score
| Metric | Harness | Semaphore |
|---|---|---|
| Reliability score | 56.4 | 54.9 |
| Rank (code hosting & CI platforms) | #8 | #10 |
| Uptime (90 days) | 99.04% | 98.92% |
| Incidents (90 days) | 25 | 22 |
| Partial / major outages | 4 | 6 |
| Avg time to resolve | 4h 1m | 4h 2m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Harness and Semaphore differ
- Harness reported 14% more incidents than Semaphore over the last 90 days (25 vs 22).
- Semaphore had 6 partial or major outages, compared with 4 for Harness.
- Harness's longest outage on record lasted 8h 28m (Sep 14, 2026); Semaphore's lasted 10h 5m (Aug 31, 2026).
90-day uptime
Harness
Semaphore
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
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
Recent Semaphore incidents
- Degraded performanceOct 29, 2026 · resolved in 1h 25m
Affected: Semaphore
- Degraded performanceOct 26, 2026 · resolved in 3h 14m
Affected: Semaphore
- Degraded performanceOct 26, 2026 · resolved in 2h 41m
Affected: Semaphore
- Degraded performanceOct 22, 2026 · resolved in 2h 15m
Affected: Semaphore
- Degraded performanceOct 21, 2026 · resolved in 3h 47m
Affected: Semaphore
- InformationalOct 20, 2026 · resolved in 2h 1m
Affected: Semaphore
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 →