Sep 16, 2025
What are the best voice AI agents in 2025?
Jack Rossi Mel - Talk AI
Founding Team
Which agencies and platforms are leading the pack?
How do you compare them fairly?
Are global providers and platforms better than local ones?
Should you choose one “best” agent?
Where should you start?
Which agencies and platforms are leading the pack?
Several providers stand out right now:
Talk AI: Based in Australia, specialises in voice agents for sales, booking, and customer service. Strong experience, expertise and team - provide a managed service end to end, so you don't have to lift a finger.
Vapi: A real-time voice API for building AI phone agents, mainly used to handle inbound and outbound calls, integrate with telephony providers, and capture leads.
Retell: A developer platform that offers a full conversational AI stack, enabling creation of voice agents for both phone calls and web applications with flexible integrations.
LiveKit: An open-source real-time communications platform that supports audio, video, and data streaming, often extended to power AI-driven voice agents and multi-modal applications.
How do you compare them fairly?
Look beyond the marketing. Test:
Voice quality: Does it sound human?
Development Process: how well is it built?
Latency: Is it under one second?
Management Process: how comprehensive is management?
Integration: Can it connect to your CRM and telephony?
Support: Do they offer monitoring and optimisation?
These factors matter more than flashy features.
Are global providers and platforms better than local ones?
Not always. Local providers often understand compliance rules, local accents, and market needs better than international ones. Global solutions may have more features but can be harder to adapt through higher friction and less control.
Should you choose one “best” agent?
The best depends on your industry, call volume, and budget. A real estate agency may need fast lead qualification, while a hospital may need strict compliance. The top agent is the one that solves your specific pain point without overcomplicating things.
Where should you start?
Run a pilot. Pick one provider, deploy a small use case, and measure results. Compare those against your goals - speed to lead, conversion rates, call handling. From there, you’ll know whether to scale.