MosaicVoice vs Stably AI
Side-by-side comparison of AI visibility scores, market position, and capabilities
Oakland CA YC W22 real-time AI call center compliance monitoring at $440K revenue Sep 2025; $500K Unpopular Ventures/Ulu/YC with Ontrak Health partnership Aug 2024 competing with Observe.AI for call center QA automation.
About
MosaicVoice is an Oakland, California-based AI call center quality assurance and compliance platform — backed by Y Combinator (W22) with $500,000 in funding from Unpopular Ventures, Ulu Ventures, and Y Combinator — providing call centers with real-time AI monitoring that listens to customer conversations, identifies compliance violations as they happen, and alerts agents and managers immediately — achieving $440,000 in annual revenue as of September 2025 with a 4-person team. Founded in 2020 by Chishun Kwong and Julian McCarty, MosaicVoice announced a partnership with Ontrak Health for AI-powered voice technology in healthcare in August 2024, expanding into the highly regulated healthcare call center market where HIPAA compliance and clinical conversation monitoring requirements are stringent.
SF YC AI test automation at $1M ARR Dec 2024 with 5 employees; ex-Google/Uber founders with self-healing tests that auto-repair when UI changes helping OpenArt scale to $16M ARR competing with Mabl for zero-flakiness CI testing.
About
Stably AI is a San Francisco-based AI test automation platform — backed by Y Combinator — reaching $1 million in annual revenue in December 2024 with a 5-person team — providing engineering teams with an AI platform that auto-generates, runs, and maintains end-to-end tests in CI/CD pipelines with zero-flakiness guarantees and self-healing capabilities that automatically repair tests when UIs change, replacing the brittle Playwright and Cypress test suites that break with every UI update. Founded in 2023 by ex-Google Chrome infrastructure engineer Jinjing Liang (CEO) and ex-Uber Safety ML engineer Neil Parker (CTO), Stably enables customers like OpenArt (which scaled to $16M ARR with a 10-person engineering team using Stably) to achieve test coverage without dedicated QA engineers.
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