Head-to-head · Chaos Engineering Platforms
Harness Chaos Engineering vs Tumult
Harness Chaos Engineering leads on 1 check, Tumult on 0, and 5 are even. Who comes out ahead on the 6 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.
Our verdict
- Highest scoreHarness Chaos Engineering · 9.0/10
- Free planonly Harness Chaos Engineering
- Most featuresHarness Chaos Engineering · 5 of 5
Harness Chaos Engineering scores higher on our rubric for chaos engineering platforms: 9.0 against 8.1 out of 10; our editors rank them #3 and #12.
Harness Chaos Engineering offers experiment scheduling; Tumult doesn't. On deployment model, Harness Chaos Engineering gives you Hybrid where Tumult offers Self_hosted.
Harness Chaos Engineering is the better fit for teams wanting free hybrid cloud coverage. Tumult is the better fit for governed, observable self-hosted experiments.
- Harness Chaos Engineering fits best
Teams wanting free hybrid cloud coverage
- Tumult fits best
Governed, observable self-hosted experiments
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Side by side
| Feature | Harness Chaos Engineering 9.0/10 Visit ↗ | Tumult 8.1/10 Visit ↗ |
|---|---|---|
| At a glance | ||
| Editor score | 9.0 | 8.1 |
| Ranking | #3 in Chaos Engineering Platforms | #12 in Chaos Engineering Platforms |
| Best for | Teams wanting free hybrid cloud coverage | Governed, observable self-hosted experiments |
| Pricing model | Free plan + paid | Free |
| Starting price | — | Open source |
| Free plan | ✓ (best) | Not checked yet |
| Free trial | — | — |
| Deployment | Cloud, Self-hosted | Self-hosted |
| Platforms | Web | Web, macOS, Linux |
| Support | Community, Docs | Docs |
| Integrations | 9 integrations | 3 integrations |
| Built for | Small business, Mid-market, Enterprise | Small business, Mid-market, Enterprise |
| Features Harness Chaos Engineering 5/5 · Tumult 4/5 | ||
| Kubernetes support | ✓ | ✓ |
| Cloud fault injection | ✓ | ✓ |
| Network fault injection | ✓ | ✓ |
| Experiment scheduling | ✓ (best) | — |
| Blast-radius controls | ✓ | ✓ |
| Specs | ||
| Deployment model | Hybrid | Self_hosted |
| Our review | ||
| Pros |
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| Cons |
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| Our verdict | Harness Chaos Engineering is a resilience-testing product for SRE, platform, QA, and engineering teams. It injects controlled faults into Kubernetes workloads, cloud resources, infrastructure, and network paths, then evaluates behavior… Read the review → |
Tumult is an open-source chaos engineering platform for reliability, platform, and SRE teams. It provides web UI and CLI experiment authoring, with support for Kubernetes pods, deployments, nodes, and network policies; AWS, Azure, and GCP… Read the review → |
Strengths and trade-offs
Harness Chaos Engineering — where it wins
- Free plan covers Kubernetes, AWS, Azure, GCP, VMware, and bare metal
- Blast-radius limits, approval gates, probes, and scheduled experiments
- CI/CD integration plus prebuilt faults and experiment templates
Where it doesn't
- Paid-plan pricing requires contacting Harness
- Free Plan includes community support rather than standard or premier support
- Chaos infrastructure is deployed in the target Kubernetes environment
Tumult — where it wins
- Risk-tiered approvals with quorum, TTL, and content-hash pinning
- Kubernetes, multi-cloud, network, and system-fault experiment coverage
- OpenTelemetry traces, DuckDB analytics, and compliance reports
Where it doesn't
- Self-hosted deployment requires a static binary or Docker image
- Native experiment scheduling is not currently available
- Integrations are centered on OpenTelemetry, Jaeger, and SigNoz
- Harness Chaos Engineering9.0/10 · Free plan
A free hybrid-cloud option with strong experiment controls and broad infrastructure coverage.
Visit HarnessFull verdict → - Tumult8.1/10 · Open source
A self-hosted platform for controlled, observable Kubernetes and multi-cloud experiments.
Visit TumultFull verdict →
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Reviewed by iTechGuides Editors · Editorial team · Updated Nov 2026
Last updated · How we research and update