# Chaos Toolkit vs Gremlin

**Leader by vioscaleAI score:** Gremlin

| Attribute | Chaos Toolkit | Gremlin |
|---|---|---|
| **vioscaleAI score** | 47 (56% (medium)) | 57.5 (73% (medium)) |
| activity.commits_last_30d | 15 | - |
| adoption.dependent_repos | 30 | - |
| adoption.github_stars | 2,031 | - |
| content.faq | `[{"answer":"An open-source framework that lets developers declare and execute chaos engineering experiments using code files, enabling discovery of system weaknesses through intentional disruption and integration with CI/CD pipelines. It is indexed under Chaos Engineering.","source":"https://chaostoolkit.org","question":"What is Chaos Toolkit?","confidence":0.6},{"answer":"Chaos Toolkit is open source, so it can be self-hosted and used at no licence cost. It is released under the Apache-2.0 licence. Pricing changes often, so verify at source before relying on it.","source":"https://chaostoolkit.org","question":"Is Chaos Toolkit free to use?","confidence":0.6},{"answer":"Chaos Toolkit supports a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://chaostoolkit.org","question":"What platforms does Chaos Toolkit support?","confidence":0.6},{"answer":"Yes. Chaos Toolkit can be deployed self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://chaostoolkit.org","question":"Can Chaos Toolkit be self-hosted?","confidence":0.6},{"answer":"Yes. Chaos Toolkit is published under the Apache-2.0 licence, a permissive licence that generally allows commercial use and modification. Licence terms can change between releases, so verify against the repository for the version you intend to use.","source":"https://github.com/chaostoolkit/chaostoolkit","question":"Is Chaos Toolkit open source?","confidence":0.95}]` | `[{"answer":"An enterprise platform for identifying and fixing system failure modes through fault injection testing, with AI-assisted analysis and self-hosted deployment options. It is indexed under Chaos Engineering.","source":"https://www.gremlin.com/pricing","question":"What is Gremlin?","confidence":0.6},{"answer":"Gremlin does not publish its prices. Pricing is quoted on request, across 1 plan (Gremlin Platform), so the figure depends on your seat count and requirements. We record this as a pricing-transparency signal rather than guessing a number. Pricing changes often, so verify at source before relying on it.","source":"https://www.gremlin.com/pricing","question":"How much does Gremlin cost?","confidence":0.6},{"answer":"We have confirmed browser-based access to Gremlin. That is the extent of what we could verify from public sources, so it may well offer desktop or mobile clients we have not indexed.","source":"https://www.gremlin.com/pricing","question":"What platforms does Gremlin support?","confidence":0.6},{"answer":"Yes. Gremlin can be deployed cloud / SaaS and self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://www.gremlin.com/pricing","question":"Can Gremlin be self-hosted?","confidence":0.6},{"answer":"We have independently confirmed SOC 2 and GDPR for Gremlin. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as Gremlin not holding them. Always confirm compliance directly before you rely on it.","source":"https://www.gremlin.com/security/practices","question":"What security certifications does Gremlin have?","confidence":0.7},{"answer":"Gremlin is available worldwide. Its primary markets are the United States and the EU.","source":"https://www.gremlin.com/pricing","question":"Where is Gremlin available?","confidence":0.75}]` |
| deployment.options | `{"self_hosted":true}` | `{"cloud":true,"hybrid":true,"on_prem":true,"self_hosted":true}` |
| description.long | An open-source framework that lets developers declare and execute chaos engineering experiments using code files, enabling discovery of system weaknesses through intentional disruption and integration with CI/CD pipelines. | A platform that conducts controlled failure tests across infrastructure and applications to identify vulnerabilities, validate system resilience, and document compliance with operational resilience regulations. |
| features.capabilities | - | `{"soc2":true,"agent_based":true,"pricing_model":"subscription","deployment_model":"saas_agent","kubernetes_native":true,"experiment_as_code":true,"blast_radius_control":true,"fault_injection_scope":"multi","observability_integration":true,"scheduling_gameday_orchestration":true}` |
| integrations.count | - | 1 |
| integrations.list | - | `[{"name":"Jira"}]` |
| language.primary | Python | - |
| license.spdx | Apache-2.0 | - |
| market.availability | - | `{"primaryMarkets":["US","EU"],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"cli":true}` | `{"cli":true,"web":true}` |
| pricing | `{"type":"open_source","summary":"Free and open source under Apache 2 license","freeTier":true,"sourceUrl":"https://chaostoolkit.org","retrievedAt":"2026-08-18T12:51:25.086Z"}` | `{"type":"subscription","plans":[{"free":false,"name":"Gremlin Platform","summary":"Priced per service, custom quote","features":["Dependency discovery","Fault injection & scenarios","Test suites & reliability scores","Disaster recovery testing","Detected risks","Organization-wide benchmarking"],"contactSales":true}],"addOns":[{"name":"Gremlin Foresight AI"}],"summary":"Custom enterprise pricing. 30-day free trial (no credit card, no auto-conversion). Foresight AI add-on priced per team. Professional Services available.","freeTier":true,"sourceUrl":"https://www.gremlin.com/pricing","retrievedAt":"2026-09-04T17:54:32.599Z","freeTrialDays":30}` |
| pricing.free_tier | yes | yes |
| pricing.model | open_source | quote |
| pricing.price_level | free | low |
| pricing.transparent | yes | no |
| release.cadence_days | 39 | - |
| release.history | `[{"url":"https://github.com/chaostoolkit/chaostoolkit/releases/tag/1.21.4","date":"2026-10-05T09:44:32Z","type":"stable","version":"1.21.4"},{"url":"https://github.com/chaostoolkit/chaostoolkit/releases/tag/1.21.3","date":"2026-10-05T07:57:19Z","type":"stable","version":"1.21.3"},{"url":"https://github.com/chaostoolkit/chaostoolkit/releases/tag/1.21.2","date":"2026-10-05T07:08:56Z","type":"stable","version":"1.21.2"},{"url":"https://github.com/chaostoolkit/chaostoolkit/releases/tag/1.21.1","date":"2026-09-28T12:25:14Z","type":"stable","version":"1.21.1"},{"url":"https://github.com/chaostoolkit/chaostoolkit/releases/tag/1.21.0","date":"2026-09-27T19:26:37Z","type":"stable","version":"1.21.0"},{"url":"https://github.com/chaostoolkit/chaostoolkit/releases/tag/1.20.0","date":"2026-08-08T17:36:45Z","type":"stable","version":"1.20.0"},{"url":"https://github.com/chaostoolkit/chaostoolkit/releases/tag/1.19.0","date":"2024-02-20T11:39:37Z","type":"stable","version":"1.19.0"},{"url":"https://github.com/chaostoolkit/chaostoolkit/releases/tag/1.18.0","date":"2024-01-14T15:23:18Z","type":"stable","version":"1.18.0"},{"url":"https://github.com/chaostoolkit/chaostoolkit/releases/tag/1.17.1","date":"2024-01-14T12:59:23Z","type":"stable","version":"1.17.1"},{"url":"https://github.com/chaostoolkit/chaostoolkit/releases/tag/1.17.0","date":"2024-01-11T16:18:52Z","type":"stable","version":"1.17.0"},{"url":"https://github.com/chaostoolkit/chaostoolkit/releases/tag/1.16.0","date":"2023-09-12T11:17:49Z","type":"stable","version":"1.16.0"},{"url":"https://github.com/chaostoolkit/chaostoolkit/releases/tag/1.15.1","date":"2023-04-03T14:27:05Z","type":"stable","version":"1.15.1"},{"url":"https://github.com/chaostoolkit/chaostoolkit/releases/tag/1.15.0","date":"2023-01-29T15:58:34Z","type":"stable","version":"1.15.0"},{"url":"https://github.com/chaostoolkit/chaostoolkit/releases/tag/1.14.0","date":"2023-01-27T11:56:16Z","type":"stable","version":"1.14.0"},{"url":"https://github.com/chaostoolkit/chaostoolkit/releases/tag/1.13.0","date":"2022-09-29T09:25:50Z","type":"stable","version":"1.13.0"},{"url":"https://github.com/chaostoolkit/chaostoolkit/releases/tag/1.12.0","date":"2022-02-25T09:14:47Z","type":"stable","version":"1.12.0"},{"url":"https://github.com/chaostoolkit/chaostoolkit/releases/tag/1.11.0","date":"2022-01-05T16:08:02Z","type":"stable","version":"1.11.0"},{"url":"https://github.com/chaostoolkit/chaostoolkit/releases/tag/1.10.1","date":"2021-10-27T12:27:38Z","type":"stable","version":"1.10.1"},{"url":"https://github.com/chaostoolkit/chaostoolkit/releases/tag/1.10.0","date":"2021-10-04T13:15:59Z","type":"stable","version":"1.10.0"},{"url":"https://github.com/chaostoolkit/chaostoolkit/releases/tag/1.9.6","date":"2021-08-26T10:47:01Z","type":"stable","version":"1.9.6"}]` | - |
| reliability.sla_pct | - | 99.999 |
| security.certifications | - | `[{"name":"SOC 2 Type II","status":"active","auditor":"Smith & Howard PC"},{"name":"ISO 27001","status":"active"},{"name":"PCI DSS Level 1","status":"active"}]` |
| security.gdpr | - | yes |
| security.iso27001 | - | yes |
| security.pci | - | yes |
| security.scorecard | 4.7 | - |
| security.soc2 | - | yes |
| security.trust_center | - | https://www.gremlin.com/security |
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=chaostoolkit&per_page=100","last_12m":0,"max_severity":null}` | - |

## Capabilities (Chaos Engineering)

| Capability | Chaos Toolkit | Gremlin |
|---|:--:|:--:|
| **Capabilities** |  |  |
| Fault injection scope | - | Multi |
| Blast radius control | - | ✓ |
| Automated abort safety | - | - |
| Kubernetes native | - | ✓ |
| Scheduling gameday orchestration | - | ✓ |
| Observability integration | - | ✓ |
| Experiment as code | - | ✓ |
| Agent based | - | ✓ |
| RBAC access control | - | - |
| Deployment model | - | Saas agent |
| SOC2 | - | ✓ |
| Open source | - | - |
| Pricing model | - | Subscription |

*Source: vioscaleAI. Generated 2026-10-16T19:19:01.996Z. "-" = undocumented, not absent.*