Head-to-head · Chaos Engineering Platforms
Gremlin vs Tumult
Gremlin 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 scoreGremlin · 8.9/10
- Free trialonly Gremlin
- Most featuresGremlin · 5 of 5
Gremlin scores higher on our rubric for chaos engineering platforms: 8.9 against 8.1 out of 10; our editors rank them #4 and #12.
Gremlin offers experiment scheduling; Tumult doesn't. On deployment model, Gremlin gives you Hybrid where Tumult offers Self_hosted.
Gremlin is the better fit for enterprise teams needing deep managed chaos. Tumult is the better fit for governed, observable self-hosted experiments.
- Gremlin fits best
Enterprise teams needing deep managed chaos
- Tumult fits best
Governed, observable self-hosted experiments
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Side by side
| Feature | Gremlin 8.9/10 Visit ↗ | Tumult 8.1/10 Visit ↗ |
|---|---|---|
| At a glance | ||
| Editor score | 8.9 | 8.1 |
| Ranking | #4 in Chaos Engineering Platforms | #12 in Chaos Engineering Platforms |
| Best for | Enterprise teams needing deep managed chaos | Governed, observable self-hosted experiments |
| Pricing model | Paid | Free |
| Starting price | — | Open source |
| Free plan | — | Not checked yet |
| Free trial | 30 days | — |
| Deployment | Cloud, Self-hosted | Self-hosted |
| Platforms | Web, Windows, Linux | Web, macOS, Linux |
| Support | Email, Phone, Community, Docs | Docs |
| Compliance | SOC 2, ISO 27001, GDPR, PCI DSS, SSO/SAML, 2FA | SOC 2, ISO 27001, PCI DSS |
| Integrations | 12 integrations | 3 integrations |
| Built for | Mid-market, Enterprise | Small business, Mid-market, Enterprise |
| Features Gremlin 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 | ||
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| Our verdict | Gremlin is a chaos engineering and reliability platform for SRE, platform, and engineering teams. It supports controlled fault injection across services, hosts, containers, Kubernetes resources, and serverless workloads. Teams can run… 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
Gremlin — where it wins
- Controlled experiments across hosts, containers, Kubernetes, and serverless
- Health checks, automatic halt, rollback, and blast-radius controls
- Reliability scores, reporting, scenarios, APIs, and broad integrations
Where it doesn't
- Paid pricing requires contacting sales
- There is no free plan
- Fault Injection is also offered as a standalone product
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
- Gremlin8.9/10 · Pricing on request · 30-day trial
A broad managed chaos platform for controlled failure testing across modern infrastructure.
Visit GremlinFull 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