Roark (YC W25) — Test, monitor, and improve your voice agents
Roark helps teams test, monitor, and improve their voice agents. Voice AI is exploding, but reliability is still the #1 challenge.
Roark is a Y Combinator company in the Winter 2025 batch. Its directory entry describes it as: Test, monitor, and improve your voice agents. The founders listed are James Zammit (Founder/CEO), Daniel Gauci (Founder/CTO) (Y Combinator directory entry, January 25, 2025).
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Roark helps teams test, monitor, and improve their voice agents.
Voice AI is exploding, but reliability is still the #1 challenge. Teams spend hours manually testing agents and still miss failures. In the last 6 months, Roark has processed over 10M minutes of calls, powering monitoring and simulation for teams across the Voice AI ecosystem (including YC companies).
We close that gap by combining:
📊 Monitoring & Evaluation - 40+ built-in metrics (latency, instruction-follow, sentiment, etc.), custom dashboards, alerts, and the ability to define your own. Up to 15 speakers with automatic speaker identification.
🎭 Simulations & Personas - end-to-end phone/WebSocket simulations for inbound and outbound agents, with configurable personas (accents, languages, speech & behavior profiles). Define tests as conversations with a graph-based approach, so you can easily branch into edge cases and variants.
🔁 Full lifecycle loop - failed calls automatically become repeatable tests, so every failure makes your agent stronger.
Roark is the missing QA layer for Voice AI - helping teams ship agents they can trust.
James Zammit
Founder/CEO
Daniel Gauci
Founder/CTO
Founders, titles and bios as the company published them. Photographs are our own copies of the ones on that record, so they do not break when the original link expires.
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What the Full Report on Roark covers
The Short Answer
Which Company This Is
What They Do, And How The Money Works
Who Runs It, And How To Reach Them
The Money: Funding, Valuation, Runway
Who Pays Them, And Who They Are Up Against
Warning Bells
Sources
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