Vox by Marr Labs

Modality: Audio
Last Updated: January 15, 2026
Pricing: Paid, Paid options from $1,000/month (includes 4,000 minutes), Billing frequency: Monthly, Additional usage $0.25/min
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Overview

Vox by Marr Labs is a cutting-edge AI voice agent nearly indistinguishable from humans, providing 24/7 conversational intelligence for sales, customer service, lead qualification, scheduling, and business operations. Powered by the proprietary Symphonia platform with ML Turbo for advanced listening and ML Reason, a custom LLM offering expert-level skills in sales, service, and scheduling, it handles complex interactions seamlessly. Features include CRM/telephony integrations, real-time analytics, branded caller ID, cost reductions up to 90%, SOC 2 compliance, and flexible deployment options like on-premise or cloud. Developed by pioneers from Siri and S-Voice, Vox scales operations efficiently, freeing human teams for critical tasks.

Pros & Cons

Pros

  • Indistinguishable from a human in voice and conversation
  • 24/7 availability for customer service and sales
  • Schedules meetings and manages appointments
  • Pre-qualifies leads and acquires data efficiently
  • Seamless CRM and telephony integrations
  • Reduces call costs by up to 90%
  • SOC 2 compliant with 99.95% uptime

Cons

  • Proprietary platform may limit some integrations
  • Requires training on business knowledge base
  • No explicit multi-language support detailed
  • Depends heavily on ML Turbo and ML Reason components
  • Unclear details on very large-scale deployments
  • No offline functionality mentioned
  • High minimum monthly fee of $1,000
  • One-time setup fee of $1,000 required
Q&A
What exactly is Vox by Marr Labs? +

Vox is a cutting-edge AI-voice agent developed by Marr Labs that imitates human speech almost flawlessly and provides 24/7 conversational intelligence for business operations like sales, customer service, and personal assistance, powered by the Symphonia platform.

How does Vox support sales and customer service? +

Vox handles complex conversations at a human level, pre-qualifies leads, supports sales processes, engages customers naturally, and provides 24/7 service to enhance interactions and satisfaction.

Can Vox function as a personal assistant? +

Yes, Vox manages calls, schedules appointments, handles daily calendar tasks, pre-qualifies leads, and enriches customer data to streamline operations.

What powers Vox's human-like voice? +

Vox's voice is powered by Marr Labs' Symphonia platform, ML Turbo for smooth listening, and ML Reason for natural back-and-forth conversations.

What are ML Turbo and ML Reason? +

ML Turbo enhances listening for smooth conversations, while ML Reason, a custom LLM, enables rapid absorption and application of expert knowledge in sales, customer service, and scheduling.

What business operations can Vox handle? +

Vox manages scheduling meetings, pre-qualifying leads, data acquisition, sales support, and standard operations, allowing teams to focus on critical issues.

How does Vox integrate with businesses? +

Vox learns business operations via ML Reason, integrates seamlessly with CRMs and telephony systems, supports on-premise/cloud deployment, and enhances customer interactions 24/7.

Can Vox be used for lead qualification? +

Yes, Vox pre-qualifies thousands of leads swiftly, enriches customer datasets, and supports warm transfers, especially in industries like mortgages.

What is Vox's pricing structure? +

Pricing includes a $1,000 one-time setup fee, $1,000 monthly minimum (4,000 minutes included), $0.25 per additional minute, with volume discounts.

Who developed Vox? +

Vox was developed by Marr Labs in San Francisco, founded by AI pioneers like those behind Siri and Samsung's S-Voice.

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