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Human-Like Conversations, Automated Intelligence

With Best Brain’s AI Voice Agents, deliver natural, lifelike phone conversations that sound just like your best human agents—only faster, smarter, and more scalable. Choose from a range of expressive voices, configure call instructions, connect existing tools, and let your voice agents handle inbound and outbound calls with context awareness and personality.

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Custom Tools

Let your AI voice agents do more than talk—connect them to systems that perform actions instantly.

Best Brain’s Custom Tools allow your AI voice agents to interact with your existing tools, CRMs, and databases, transforming voice conversations into action-driving workflows.

Key Benefits

  • Integrate with APIs, CRMs, databases, and scheduling tools
  • Trigger real-time actions during voice calls (e.g., book appointments, update records)
  • Use secure authentication for private or internal systems
  • Extend voice agent behavior for custom business logic
  • Build vertical-specific actions like insurance verification or service dispatch

Voice Library

Choose from a variety of natural-sounding voices tailored to your brand and audience.

Best Brain’s Voice Library offers multiple high-quality voice profiles in different accents, genders, and tones—so every call feels professional, relatable, and on-brand.

Key Benefits

  • Access diverse voice options: formal, friendly, energetic, calm
  • Support for regional accents and localized pronunciation
  • Customize tone and pitch to suit your customer personas
  • Use different voices for different tasks or departments
  • Consistent voice delivery across inbound and outbound calls

Advanced Configuration

Design intelligent call behavior with customizable logic, tone control, and call handling.

Our Advanced Configuration lets you set exactly how your voice agents behave during calls—what they say, how they say it, and what actions they perform at each step.

Key Benefits

  • Set call scripts with conditional logic and fallback handling
  • Define greeting, escalation, and wrap-up instructions
  • Control intonation, pauses, emphasis, and speech speed
  • Ensure consistent, accurate information across all customer interactions
  • Handle call interruptions, silence, and sentiment shifts gracefully

Multilingual Support

Speak your customers’ language—literally—with native-quality multilingual capabilities.

Best Brain’s AI Voice Agents communicate in multiple languages and dialects, making your service accessible and inclusive across regions and cultures. 

Key Benefits

  • Support for 40+ global languages and dialects
  • Auto-detect language based on user input or call origin
  • Translate instructions, documents, and call flows dynamically
  • Deliver consistent experience for global customers
  • Localize tone and phrasing for cultural relevance

Knowledge Base

Equip your voice agents with deep domain knowledge for intelligent, context-aware conversations.

Like our chat agents, voice agents learn from your business documents and FAQs, enabling them to answer complex questions and follow domain-specific protocols fluently.

Key Benefits

  • Use existing Knowledge Base for both voice and chat agents
  • Understand and respond to customer queries accurately
  • Retrieve and speak answers from documents, guides, and policies
  • Keep answers updated as documents evolve
  • Handle objections, clarifications, and detailed questions naturally

Agent Evaluation

Monitor call quality, track agent effectiveness, and identify areas for voice experience improvement.

Best Brain’s Agent Evaluation tools provide actionable insights into voice agent performance with automatic scoring, summaries, and quality monitoring.

Key Benefits

  • Get detailed call summaries and transcripts after every conversation
  • Use sentiment analysis and keyword tracking for quality scoring
  • Identify call drop-offs, misunderstandings, and unresolved issues
  • Benchmark agent performance against KPIs and goals Continuously improve scripts and behavior based on real

Get Started Today

Discover how AI agents can revolutionize your business operations. Take the first step toward smarter automation, enhanced customer experiences, and streamlined workflows—powered by the intelligence of next-generation AI.

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