Harness Chaos Engineering vs Gremlin

Harness Chaos Engineering9.0Visit Gremlin8.9Visit

Higher score Harness Chaos Engineering #3 in Chaos Engineering Platforms 9.0/10 Free plan Free plan✓ 5 of 5 features Visit Harness

vs

Gremlin #4 in Chaos Engineering Platforms 8.9/10 Pricing on request · 30-day trial Free trial✓ 5 of 5 features Visit Gremlin

• Harness Chaos Engineering fits best

  Teams wanting free hybrid cloud coverage

• Gremlin fits best

  Enterprise teams needing deep managed chaos

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Side by side

Feature	Harness Chaos Engineering 9.0/10 Visit ↗	Gremlin 8.9/10 Visit ↗
At a glance
Editor score	9.0	8.9
Ranking	#3 in Chaos Engineering Platforms	#4 in Chaos Engineering Platforms
Best for	Teams wanting free hybrid cloud coverage	Enterprise teams needing deep managed chaos
Pricing model	Free plan + paid	Paid
Starting price	—	—
Free plan	✓ (best)	—
Free trial	—	30 days
Deployment	Cloud, Self-hosted	Cloud, Self-hosted
Platforms	Web	Web, Windows, Linux
Support	Community, Docs	Email, Phone, Community, Docs
Integrations	9 integrations	12 integrations
Built for	Small business, Mid-market, Enterprise	Mid-market, Enterprise
Features Harness Chaos Engineering 5/5 · Gremlin 5/5
Kubernetes support	✓	✓
Cloud fault injection	✓	✓
Network fault injection	✓	✓
Experiment scheduling	✓	✓
Blast-radius controls	✓	✓
Specs
Deployment model	Hybrid	Hybrid
Our review
Pros	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	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
Cons	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	Paid pricing requires contacting sales There is no free plan Fault Injection is also offered as a standalone product
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 →	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 →

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

• 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

• Harness Chaos Engineering9.0/10 · Free plan

  A free hybrid-cloud option with strong experiment controls and broad infrastructure coverage.

  Visit HarnessFull verdict →
• Gremlin8.9/10 · Pricing on request · 30-day trial

  A broad managed chaos platform for controlled failure testing across modern infrastructure.

  Visit GremlinFull verdict →