Gremlin vs Tumult
Gremlin
gremlin.comTumult
tumult.rsSide by side
| Figure | Gremlin | Tumult |
|---|---|---|
| Price from | $3,750/mo | — |
| Free plan | — | — |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | Yes | Yes |
| macOS | — | Yes |
| Linux | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 8 | 0 |
| Spec score · Chaos Engineering Platforms | 9.0 (#1) | 7.1 (#20) |
| Fault injection | Experiments can target services, hosts, containers and serverless workloads, with automatic halt and rollback controls. | The site lists 16 plugins and 91 chaos actions covering technologies including Kubernetes, Docker, PostgreSQL, MySQL, Redis, Kafka, SSH, and CPU, memory, and I/O stress. |
| License | Gremlin's commercial reliability platform is not offered as an open-source product; a G2 reviewer specifically notes that no open-source version is available. | Tumult is open source under the Apache-2.0 license. |
| Purpose | Gremlin helps engineering teams find failure modes, fix them, and validate reliability before failures become outages. | Tumult is a Rust-native chaos engineering platform for defining, running, and analyzing experiments that test how systems behave under failure conditions. |
| Security | Gremlin states it is SOC 2 Type II certified and encrypts data in transit with TLS and at rest with AES-256. | The production deployment guide says HTTP exposure beyond loopback requires authentication and documents TLS configuration for the analytics daemon's HTTP and gRPC listeners. |
Plans
Gremlin
- Gremlin 30-day trialFree
- Gremlin Platform trialFree
- Gremlin Reliability Management Platform on AWS Marketplace$45,000 a year
- Fault injection suitePriced on request
- Fault injection suite (stand-alone)Priced on request
- Gremlin Foresight AIPriced on request
- Gremlin PlatformPriced on request
- Professional ServicesPriced on request
In their own words
Gremlin
Gremlin is a chaos engineering platform for engineering teams seeking failure modes and ways to validate reliability before failures become outages. It injects faults into services, hosts, containers, and serverless workloads so teams can examine system responses. Blast radius controls limit experiments, which can halt and roll back automatically if issues arise. Teams can sequence experiments into incident scenarios, schedule them, and use GameDay Manager to prepare, run, analyze, and store results. The platform also includes dependency discovery, standardized test suites and reliability scores, disaster recovery testing, detected risks, and organization-wide benchmarking. Documented integrations include Slack, Datadog, Dynatrace, AWS, Azure, Google Cloud Platform, Grafana Cloud k6, Jira, and custom webhooks. Supported environments include public clouds, Linux, Windows, Kubernetes, and on-premises deployments through self-hosted Private Edition. Gremlin states that it is SOC 2 Type II certified and encrypts data in transit with TLS and at rest with AES-256. A 30-day trial is available without a credit card and does not auto-convert. Platform pricing is by custom quote per service; agents, targets, and test volume are sized during the pricing conversation.