Lark
YC S25 · Active · The E2E testing layer for AI-driven development
Competitors
| Company | Category | Status | Program |
|---|---|---|---|
 ArtilleryShared: e2e testing, devops, productionActiveAI, Devtools | AI, Devtools | Active | YCS21 |
 AutosanaShared: e2e testing, testing layer, featureActiveAI, Devtools | AI, Devtools | Active | YCS25 |
 SpurShared: e2e testingActiveAI, Devtools | AI, Devtools | Active | YCS24 |
 DocketShared: plain english, testing, writeActiveAI, Devtools | AI, Devtools | Active | YCX25 |
 RetroFixShared: plain english, write, apisActiveAI, Devtools | AI, Devtools | Active | YCS24 |
Adjacent
| Company | Category | Status | Program |
|---|---|---|---|
 InferaShared: plain english, automation, runActiveAI | AI | Active | YCX26 |
 Zeon SystemsShared: plain english, automation, fullActiveAI | AI | Active | YCX25 |
 webapp.ioShared: e2e testingAcquiredDevtools | Devtools | Acquired | YCS20 |
 SpecificShared: devops, write, letsActiveAI, Devtools | AI, Devtools | Active | YCF25 |
 MomenticShared: plain english, test, writeActiveAI, Devtools | AI, Devtools | Active | YC +1W24 |
Also from S25 in AI
All of S25| Company | Category | Status |
|---|---|---|
 Dedalus LabsCompute substrate for AI agentsActiveAI, Devtools | AI, Devtools | Active |
 NotteReliable Web Agents for EnterpriseActiveAI, Devtools | AI, Devtools | Active |
 AgentMailEmail Inboxes for AI AgentsActiveAI, Devtools | AI, Devtools | Active |
 AlterSecure access control and authorization platform for agent workflowsActiveAI, Devtools | AI, Devtools | Active |
 Cactus ComputeAutomation Foundation Models For Tiny DevicesActiveAI, Devtools | AI, Devtools | Active |
 CyberdeskSelf learning computer use agent for developersActiveAI, Devtools | AI, Devtools | Active |
Founders
- Vijit DhingraFounder
- Jack BrownFounder
About Lark
Lark lets teams write end-to-end tests in plain English. Validate dashboards, APIs, SDKs, and full product flows without maintaining fragile test code. Run continuously on feature branches, in CI, or in production.
- YC batch
- S25 · Summer 2025
- Status, per YC
- Active
- Category
- AI, Developer tools
- Team size
- 5
- Location
- San Francisco, CA, USA
- Founded
- 2025
- Checked
- 32m ago
YC tags: Artificial Intelligence, Developer Tools, B2B, DevOps, Automation
Lark: questions
Which YC batch was Lark in?
Lark was in Y Combinator's Summer 2025 batch (S25).
Is Lark still active?
Y Combinator lists Lark as active.
Who founded Lark?
Lark's founders, as listed on its YC page: Vijit Dhingra (Founder), Jack Brown (Founder).
Where is Lark based?
Lark lists San Francisco, CA, USA as its location on YC's directory.
Sources: each program's public company list, read twice a week. Not affiliated with Y Combinator or any other program. Logos via logo.dev; trademarks belong to their owners.