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Stably

Plain English QA testing for rapid MVPs

Stably enables developers to create QA tests in plain English using a no-code editor, with AI ensuring tests remain valid as the application evolves through self-healing locators and assertions. It lowers the barrier to high-quality QA for startups by eliminating the need for scripting knowledge, automatically adapting test steps when UI elements change position or structure.

About Stably

Stably democratizes end-to-end testing by allowing anyone to write test cases in plain English descriptions rather than code. Developers and product managers describe what should happen in natural language, and the AI translates these descriptions into executable test steps that interact with the actual application. This no-code approach makes QA accessible to team members without automation expertise.

The self-healing capability is critical for maintaining test reliability over time. When UI elements change position, get renamed, or are restructured, traditional E2E tests break and require manual updates. Stably's AI automatically adapts test locators and assertions to match the current state of the application, significantly reducing the maintenance burden that makes many teams abandon E2E testing altogether.

Stably targets startups and fast-moving product teams that need to ship with confidence but cannot afford dedicated QA engineers or the time to maintain complex test automation frameworks. The paid platform provides test scheduling, CI/CD integration, and team management features for growing organizations that want to scale their QA coverage alongside their product development.

Pricing & Platform Specs

Pricing Summary

Free tier ($0/mo) includes $10/mo in test credits with no credit card required. Team plan ($49-$60/mo) provides expanded credits for AI assertions, auto-healing, and parallel CI runs. Growth plan ($250-$299/mo) offers high concurrency and large credit pools for scaling teams. Enterprise offers custom pricing with volume discounts (for $1,000+/mo spend), SAML SSO, SOC 2 compliance, custom SLAs, and dedicated support.

full pricing breakdown →

Supported Platforms

Web applications, CI/CD integration

Explore categories, tags & use cases

Categories

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freemiumOpen Source

Side-by-Side Comparisons

Bugster logo
Bugster
vs
Stably logo
Stably
vs
TestSprite logo
TestSprite

Bugster vs Stably vs TestSprite — Autonomous AI E2E Testing Agents for Web Applications Compared

End-to-end testing has historically been the most painful part of the testing pyramid: slow to write, expensive to maintain, and fragile to UI changes. A new generation of AI-powered E2E testing agents promises to eliminate this burden by autonomously generating, running, and maintaining tests without manual scripting. This comparison examines three leading autonomous QA tools: Bugster as a PR-integrated testing agent with real-browser execution, Stably as an AI-native E2E platform, and TestSprite as an autonomous testing agent purpose-built for validating AI-generated code.

Community experience

Sources & verification

Sources checked
Content verified

Verification dates are editorial checks. Routine CMS saves and automatic updatedAt timestamps do not advance them.

FAQ

What is Stably?

Stably enables developers to create QA tests in plain English using a no-code editor, with AI ensuring tests remain valid as the application evolves through self-healing locators and assertions. It lowers the barrier to high-quality QA for startups by eliminating the need for scripting knowledge, automatically adapting test steps when UI elements change position or structure.

Is Stably free?

Stably offers a free tier alongside paid plans. Free tier ($0/mo) includes $10/mo in test credits with no credit card required. Team plan ($49-$60/mo) provides expanded credits for AI assertions, auto-healing, and parallel CI runs. Growth plan ($250-$299/mo) offers high concurrency and large credit pools for scaling teams. Enterprise offers custom pricing with volume discounts (for $1,000+/mo spend), SAML SSO, SOC 2 compliance, custom SLAs, and dedicated support.

Is Stably still maintained?

Yes — Stably is active. Its listing was last verified on September 6, 2026.

What are the best Stably alternatives?

The first editor-selected Stably alternatives are Jan, Plasmic.

How does Stably score in our review?

The published editorial review lists Stably at 87/100 overall across speed, privacy, and developer experience. Check the review's evidence status and test metadata for its verification level.