Code Hosting & CI/CD · reliability comparison
Buildkite vs Harness: which is more reliable? (2026)
Buildkite is more reliable than Harness, scoring 65.8 vs 56.4 out of 100. Over the last 90 days Buildkite reported 29 incidents and Harness reported 25, with effective uptime of 99.57% and 99.04% respectively. Buildkite resolves incidents faster on average (1h 32m).
Data updated Nov 1, 2026 · How we score
| Metric | Buildkite | Harness |
|---|---|---|
| Reliability score | 65.8 | 56.4 |
| Rank (code hosting & CI platforms) | #5 | #7 |
| Uptime (90 days) | 99.57% | 99.04% |
| Incidents (90 days) | 29 | 25 |
| Partial / major outages | 5 | 4 |
| Avg time to resolve | 1h 32m | 4h 1m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Buildkite and Harness differ
- Buildkite reported 16% more incidents than Harness over the last 90 days (29 vs 25).
- Buildkite had 5 partial or major outages, compared with 4 for Harness.
- Buildkite fixes problems faster: 1h 32m on average, against 4h 1m for Harness (2.6× quicker).
- Buildkite's longest outage on record lasted 6h 47m (Sep 9, 2026); Harness's lasted 8h 28m (Sep 14, 2026).
90-day uptime
Buildkite
Harness
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent Buildkite incidents
- Degraded performanceOct 29, 2026 · resolved in 2h 1m
Affected: Job Queue
- Degraded performanceOct 28, 2026 · resolved in 32m
Increased latency and error rates
Affected: REST API, Agent API
- InformationalOct 26, 2026 · resolved in <1m
- InformationalOct 24, 2026 · resolved in <1m
Affected: REST API, Web, Agent API, Remote MCP Server, Job Queue
- Degraded performanceOct 22, 2026 · resolved in 46m
Delays with Hosted Agents jobs
Affected: Hosted Agents
- InformationalOct 20, 2026 · resolved in 1d
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 →