Harness AI Test Automation
By Harness. Category: Natural-language test authoring. Homepage
Harness's developer documentation describes AI Test Automation as a no-code, intent-driven testing product for web applications. Tests are written as natural-language prompts or captured by recording steps in the cloud. They run on the Harness platform from cloud locations. The documentation describes self-healing when the application under test changes. Documented integrations include a GitHub Actions action, a Harness CI/CD pipeline step and a command-line client. The product originated as Relicx, which PitchBook reports Harness acquired in August 2024.
Description written from the vendor's documentation.
Status
Status: Acquired
Reported by PitchBook: Harness acquired Relicx, the origin of Harness AI Test Automation, in August 2024; a Harness author page for Relicx co-founder Sushil Kumar states Relicx was acquired by Harness. (2024-08)
Facts
| Fact | Value | Evidence | Source | Verified on |
|---|---|---|---|---|
| Status | Acquired | Vendor-stated | harness.io | |
| Founded | 2017 | Vendor-stated | harness.io | |
| Headquarters | Not documented | Not documented | None found | |
| AI capabilities | Documented | developer.harness.io | ||
| Test creation | Documented | developer.harness.io | ||
| Test output | Proprietary runner | Documented | developer.harness.io | |
| Surfaces | Documented | developer.harness.io | ||
| Hosting | Documented | developer.harness.io | ||
| Pricing model | Documented | harness.io | ||
| Free tier | No | Documented | harness.io | |
| CI integrations | Documented | developer.harness.io | ||
| Self-healing | Documented | Documented | developer.harness.io | |
| Agent integration | Not documented | Not documented | None found |
Published prices
No prices are published. The pricing model includes quotes on request.
Vendor-stated, verbatim
What Harness says about its product, quoted as published and not confirmed in documentation.
“AI Tasks now run on a new agentic executor that replaces the legacy multi-agent architecture (13+ agents with 5 to 7 serial LLM calls per step) with a single tool-calling loop. Per-step latency drops from 35 to 60 seconds down to 5 to 10 seconds, and token cost is reduced by approximately 76%.”
“Run hundreds of tests simultaneously across browser combinations with no infrastructure to manage.”
Alternatives
Tools in the same category (Natural-language test authoring), ordered by the number of shared creation and surface values, then by name. Each line lists documented facts that differ from Harness AI Test Automation.
- Testsigma: documents hosting self-hosted
- TestZeus: Natural-language test authoring; no documented difference in output, creation, hosting or free tier
- Thunders: documents output Mixed; hosting self-hosted, hybrid
- Windup: documents hosting self-hosted; a free tier
- Alumnium: documents hosting self-hosted; a free tier
- AssureQA: documents hosting self-hosted
Questions
Is this page a review of Harness AI Test Automation?
No. This page is a fact sheet. Each fact shows its evidence level, its source and the date it was checked. We do not rate or rank tools.
Does Harness AI Test Automation have a free tier?
No. Harness AI Test Automation has no free tier. This is documented, checked on 2026-09-24.
What test output does Harness AI Test Automation produce?
Output: Proprietary runner. This is documented, checked on 2026-09-24.
Is Harness AI Test Automation still available?
Status: Acquired, checked on 2026-09-24. The status note above gives the date and source.
Sources
- Playwright Execution Service | Harness (redirect target of /products/ai-test-automation) Opened
- AI Test Automation | Harness Developer Hub Opened
- AI Test Automation Overview Opened
- AI-Powered Intent Testing Opened
- Creating Tests with Interactive Authoring Opened
- Multi-Step AI Tasks - Natural Language Tests Opened
- Running Modes Opened
- Playwright in AI Test Automation Opened
- Test Apps Behind a Firewall Opened
- Integrations | AI Test Automation Opened
- AI Test Automation with Harness CI & CD Opened
- GitHub Actions | AI Test Automation Opened
- Execute from the Command Line | AI Test Automation Opened
- AI Test Automation release notes Opened
- Harness Pricing | Flexible Plans for DevOps & CI/CD Opened
- Harness MCP Server resource types Opened
- About Us | Harness Opened
- After 'Vibe Coding' Comes 'Vibe Testing' (Almost) - The New Stack Opened
- Explore DevOps Insights from Sushil Kumar | Harness Opened
- RelicX 2026 Company Profile: Valuation, Investors, Acquisition | PitchBook Opened
Spotted an outdated or wrong fact about Harness AI Test Automation? Send the source and we apply it at the next monthly update.