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Cekura

YC F24

San Francisco, US · Founded 2024 · 15 employees · Hiring · 9 known investors

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Cekura provides testing, monitoring, and optimization tools for voice and chat AI agents. The platform enables developers to simulate scenarios, run evaluations before production, replay real conversations, and continuously improve agents through voice observability and analytics.

Also known as Tatva Labs, Inc. · Cekura (formerly Vocera) · Lex · Lex, Vocera, Cekura, Cekura (formerly Vocera), Cekura, Cekura (formerly Vocera) · Vocera

AI & Machine LearningDeveloper ToolsEnterprise SoftwareSaaSB2BUnited States of AmericaAmerica / CanadaPartly Remote

Founders & leadership· Y Combinator alumni (F24)

Cekura was founded in 2024 by Tarush Agarwal, Shashij Gupta, and Sidhant Kabra.

TATarush Agarwal
Tarush AgarwalCEOHe previously spent three years in quantitative finance developing low-latency trading systems and worked on strategy optimization. He holds a degree in computer science and statistics from IIT Bombay.
SGShashij Gupta
Shashij GuptaCTOHe previously worked as a quantitative researcher at a trading firm and as an NLP researcher at Google Research, with published work on transformer testing from his time at ETH Zurich. He holds a degree in computer science from IIT Bombay.
SKSidhant Kabra
Sidhant KabraFounderHe previously worked as a management consultant advising executives at Fortune 500 companies in FMCG and medical devices, and managed a customer experience team of over 100 people. Most recently, he held product and growth roles at an edtech startup that scaled to over 200,000 users. He holds a bachelor's degree from IIT Bombay.

Investors · 9

Pioneerlisted by PioneerToronto, Ontario

How we know: Y Combinator's founder network · pioneerfund.vc · open dataset · 5k.vc investor directory · Not right? Tell us

Y Combinatorlisted by Y CombinatorSan Francisco · $500K

How we know: the Y Combinator directory · a partner's Signal profile · funding news · open dataset · 5k.vc investor directory · Not right? Tell us

Decacorn CapitalreportedSingapore · $300K – $600K

How we know: Y Combinator's founder network · Not right? Tell us

Flex Capital PartnersreportedSan Francisco · $500K – $2M

How we know: Y Combinator's founder network · Not right? Tell us

Hike VenturesreportedSan Francisco · $1M – $5M

How we know: the VCSheet dataset · open dataset · 5k.vc investor directory · Y Combinator's founder network · Not right? Tell us

Peterson Venture PartnersreportedSalt Lake City · $5M – $25M

How we know: Y Combinator's founder network · Not right? Tell us

Runa CapitalreportedLuxembourg · $500K – $5M

How we know: a partner's Signal profile · Not right? Tell us

Team IgnitereportedFolsom · $15M

How we know: Y Combinator's founder network · Not right? Tell us

Related companies · 10

TwilioTwilio provides a cloud-based communications platform that enables businesses to integrate voice, messaging, and video into applications using APIs. The platform combines communication channels, contextual data, and AI orchestration for enterprises and developers building customer experiences.
FeatherFeather provides an operating system for deploying and managing AI agents across enterprise functions like customer service, IT, sales, legal, and operations. The platform enables businesses to automate workflows, handle customer interactions across voice and text channels, and scale agent deployments across multiple teams and industries.
CloudtalkCloudTalk provides an AI voice platform for global calling used by sales and support teams, offering features like parallel dialing, call routing, inbound and outbound AI voice agents, international SMS/WhatsApp messaging, and call analytics. Its cloud-based voice infrastructure supports numbers in over 160 countries for teams handling high volumes of customer conversations.
BluejayBluejay develops tools for improving the reliability of generative AI systems in production environments. The company is focused on ensuring trust and dependability in real-world AI deployments.
ElevenLabsElevenLabs is an AI research and product company that builds voice generation and audio processing platforms for creating human-like voice interactions with technology. The company serves individuals with accessibility needs, nonprofits, and general users across healthcare, education, and culture.
Bizzy AIBizzy is an AI receptionist service that answers business calls, books appointments, and manages customer inquiries 24/7. It serves service-based businesses and integrates with scheduling platforms like Square, MindBody, and Vagaro.
testRigortestRigor provides AI-driven functional test automation for software development teams. The platform enables companies to achieve high test automation coverage with minimal maintenance effort, targeting fast-moving startups and development teams.
Marr LabsMarr Labs provides an AI operating layer that automates customer engagement workflows—including voice and chat interactions, document processing, and multi-step processes—with compliance controls built in for regulated industries like healthcare and financial services.
BraintrustBraintrust provides AI observability and evaluation platform that monitors production AI systems to surface patterns, define quality standards, and automate improvements. The platform serves AI teams across engineering and product organizations.
Sandra AISandra AI develops AI agents and software for car dealerships that automate customer interactions across calls and messages, as well as sales and aftersales operations including billing, scheduling, inventory, and CRM management.

Companies working in the same space as Cekura.

Legal entities · 1

corporate structure
Tatva Labs, Inc.

In the news

Cekura Red Teaming: Stress-test your AI agents for Jailbreaks, Bias, Toxicity and moreycombinator.com · Jan 2026Cekura raises $2.4M to build the reliability layer for Conversational AIcekura.ai · Jul 2025Cekura: Automated Testing & Monitoring for Voice and Chat AI Agentsycombinator.com · Apr 2025Cekura (formerly Vocera) - Testing & Monitoring for AI Voice Agentsycombinator.com · Oct 2024

Frequently asked questions

What does Cekura do?
Cekura provides testing, monitoring, and optimization tools for voice and chat AI agents. The platform enables developers to simulate scenarios, run evaluations before production, replay real conversations, and continuously improve agents through voice observability and analytics.
Who founded Cekura?
Cekura was founded by Tarush Agarwal, Shashij Gupta, Sidhant Kabra in 2024.
Who are Cekura's investors?
Cekura's investors include Imagination Capital, Pioneer, Y Combinator, Decacorn Capital, Flex Capital Partners, Hike Ventures, Peterson Venture Partners, Runa Capital and 1 more.
Where is Cekura headquartered?
Cekura is headquartered in San Francisco, US.