tldr: Momentic is an AI-native test automation platform (YC W24) that lets teams write end-to-end tests in plain English. It uses AI agents to navigate web apps, self-heal broken tests, and run visual, API, and accessibility checks. Backed by $19M in funding, it's used by teams like Notion, Webflow, and Retool.
What Momentic does
Momentic is a test automation platform that replaces traditional selector-based testing with AI. Instead of writing Playwright or Cypress scripts that target specific DOM elements, you describe what you want to test in natural language. Momentic's AI agent interprets that instruction, navigates your application, and validates the outcome.
The core idea: tests should describe intent, not implementation. "Log in and verify the dashboard loads" instead of page.click('[data-testid="login-btn"]').
Momentic supports four types of testing from a single platform:
- End-to-end (E2E) testing for user flows
- UI and visual testing with screenshot comparison
- API testing for backend validation
- Accessibility (a11y) testing for WCAG compliance
The platform runs tests in the cloud. You don't manage browser infrastructure, parallel execution, or test environments.
How Momentic works
Momentic's approach is built on what they call "intent-based" testing. You describe elements and actions in natural language ("click the OK button"), and the AI locates and interacts with the correct element at runtime. No CSS selectors. No XPath. No data-testid attributes.
The AI uses a combination of screenshots, accessibility tree data, network logs, and console output to understand the page. This is black-box testing. The AI doesn't need access to your source code or implementation details.
Test creation happens two ways:
- Low-code editor where you write steps in plain English
- CLI for developers who prefer working from the terminal and integrating into existing repos
Self-healing is automatic. When your UI changes, Momentic's locators adapt because they're based on intent, not DOM structure. The platform claims a 99% reduction in false positive alerts from broken selectors.
Autonomous testing agent is Momentic's exploratory mode. The AI crawls your application, identifies critical user flows, and generates tests without manual input.
Company background
Momentic was founded by Wei-Wei Wu and Jeff Ahn. Wei-Wei was a founding engineer at Nashi and staff engineer at Density, leading product engineering and reliability. Jeff led testing at Robinhood and enterprise quality at Retool. Both saw firsthand how testing bottlenecks slow down shipping.
The company went through Y Combinator's Winter 2024 batch.
Funding history:
| Round | Date | Amount | Lead investor |
|---|---|---|---|
| Pre-seed | April 2024 | $500K | Y Combinator |
| Seed | March 2025 | $3.7M | FundersClub |
| Series A | November 2025 | $15M | Standard Capital |
Total raised: ~$19.2M. Other investors include Dropbox Ventures, General Catalyst, AI Grant, Karman Ventures, and angels like Aaron Levie (Box) and Kulveer Taggar (Zeus).
Headquarters: San Francisco.
Who uses Momentic
Momentic's customer base skews toward product-led engineering teams. Named customers include:
- Notion (productivity software)
- Webflow (visual web builder)
- Retool (internal tools platform)
- Quora (Q&A platform)
- GPTZero (AI detection)
- Vapi (voice AI)
- Runway (AI video)
According to their Series A announcement, Momentic has executed over 2 billion test steps across customers and catches 390,000+ bugs per month.
What makes Momentic different
Momentic positions itself as a generation 3 testing tool. Here's where it fits in the evolution:
Generation 1 (script-based): Selenium, Playwright, Cypress. You write code. Tests break when selectors change. Maintenance is the biggest cost.
Generation 2 (AI-assisted): Testim, Mabl. Traditional scripts with AI features bolted on. Self-healing locators patch broken selectors. Still fundamentally script-based.
Generation 3 (AI-native): Momentic, Bug0. No scripts. AI agents navigate by intent. Nothing to patch because there are no selectors to break. You can read more about this shift in our guide to agentic AI testing.
Momentic's differentiator within generation 3 is breadth. Most AI testing tools focus on E2E browser testing. Momentic bundles E2E, visual, API, and accessibility testing into one platform. Whether that breadth comes with depth is the key question. (We cover this in our Momentic review.)
Browser and platform support
Momentic currently supports Chromium and Chrome for browser testing. Safari and Firefox are on the roadmap but not available yet. This is a meaningful limitation for teams that need cross-browser coverage.
The platform is web-only. No native mobile app testing. For mobile web testing on Chrome, Momentic works.
Security and compliance
Momentic is SOC 2 Type 2 certified. Enterprise plans include:
- SAML/SCIM SSO
- Role-based access control
- Data encryption in transit and at rest
- Immutable audit logs
- 99.99% uptime SLA
- Dedicated customer success manager
Momentic vs. Bug0
Both Momentic and Bug0 are AI-native testing platforms, but they solve the problem differently.
Momentic is self-serve only. You create and manage tests yourself. Bug0 offers both self-serve (Bug0 Studio) and done-for-you (Bug0 Managed) options. With Bug0 Managed, a forward-deployed engineer pod handles test planning, generation, verification, and release gating. You ship. They test.
Bug0 also starts at a lower price point. Bug0 Studio begins at $250/month. Momentic's pricing is quote-based and not publicly available.
For a deeper comparison, see our Momentic alternatives guide.
FAQs
What is Momentic?
Momentic is an AI-native test automation platform that lets you write end-to-end, visual, API, and accessibility tests using natural language. Tests self-heal when your UI changes. The platform runs in the cloud with no infrastructure to manage.
Who founded Momentic?
Wei-Wei Wu and Jeff Ahn. Wei-Wei was a staff engineer at Density. Jeff led testing at Robinhood and enterprise quality at Retool. The company went through Y Combinator W24.
How much funding has Momentic raised?
Approximately $19.2M across three rounds: a $500K pre-seed from YC (April 2024), a $3.7M seed led by FundersClub (March 2025), and a $15M Series A led by Standard Capital (November 2025).
What browsers does Momentic support?
Chromium and Chrome. Safari and Firefox support is on the roadmap. This limits cross-browser testing coverage compared to tools like BrowserStack or LambdaTest.
Is Momentic free?
Momentic offers a free tier to get started. Paid plans are quote-based. Contact their sales team for specific pricing.
How does Momentic compare to Bug0?
Both are AI-native testing platforms. Momentic is self-serve only. Bug0 offers both self-serve (Studio, from $250/month) and done-for-you managed QA (from $2,500/month). Bug0 also provides human verification of test results through forward-deployed engineer pods.