Are there free options?

2 tools in this category offer a free plan. Another 5 have a free trial.

How do you rank these tools?

Tools are ranked by a combination of community upvotes, editorial review, and feature breadth. Our editors review pricing and capabilities quarterly.

Can I suggest a tool we're missing?

Yes — submit it through our submission form. Our team reviews submissions weekly.

AI Voice Agents

Answer and make calls, automatically.

11 tools·2 with free plan·5 with free trial

Top picks

Vapi

Developer platform for building, testing, and deploying real-time AI voice agents

Vapi is one of the most flexible voice AI stacks for developers, but the headline $0.05/min only covers orchestration — real all-in costs typically land between $0.07 and $0.25+ per minute once STT, LLM, TTS, and telephony are added.

freemium·$0.05/min

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Retell AI

Build, test, and deploy production-grade AI voice agents that handle inbound and outbound phone calls.

Retell is one of the strongest developer-first voice agent platforms, with transparent per-minute pricing and no features locked behind higher tiers. Just remember the headline $0.07/min is the infrastructure floor: real production calls with premium voices and models typically land closer to $0.13-$0.31/min.

paid·$0.07/min

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Bland AI

Developer platform for AI phone agents

Bland AI is a capable, well-funded choice for developers and enterprises automating phone calls at scale, and bundling LLM, voice, and telephony simplifies what is otherwise a complex stack. The per-minute base rate looks low, but add-ons (custom voices, knowledge-base lookups, recording) push real cost higher, so model your true per-minute cost for your call mix. It is developer-first, so non-technical teams should expect a build effort or partner. Evaluate against Synthflow, Vapi, and Retell on latency, reliability, and integration fit.

paid·$0.09/min (base)

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All AI Voice Agents

Synthflow

No-code AI voice agents for calls

#voice-agents#ai-phone-calls#no-code#conversational-ai

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PolyAI

Enterprise voice AI that answers customer calls in natural language

#voice-ai#contact-center#customer-service#enterprise

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Parloa

Agentic AI management platform for customer experience

#voice-ai#agentic-ai#contact-center#customer-service

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Cresta

AI for the contact center: agent assist and conversation intelligence

#contact-center#agent-assist#conversation-intelligence#customer-service

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Regal AI

AI voice and SMS agents for contact centers

#voice-agents#contact-center#outbound-calling#customer-support

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Thoughtly

No-code AI voice agents for revenue teams

#voice-agents#no-code#outbound-calling#lead-qualification

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Vocode

Open-source framework for building voice AI agents

#voice-agents#open-source#developer-framework#self-hosted

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Sindarin

Low-latency conversational voice AI for developers

#voice-agents#low-latency#developer-api#conversational-ai

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Other AI tool categories

Writing & Content Image & Design Coding & Dev Video & Audio Productivity Research & Data Chatbots & Agents SEO & Marketing

Frequently asked questions

What's the best ai voice agents tool?: Vapi currently leads in community votes. Vapi is one of the most flexible voice AI stacks for developers, but the headline $0.05/min only covers orchestration — real all-in costs typically land between $0.07 and $0.25+ per minute once STT, LLM, TTS, and telephony are added.
Are there free options?: 2 tools in this category offer a free plan. Another 5 have a free trial.
How do you rank these tools?: Tools are ranked by a combination of community upvotes, editorial review, and feature breadth. Our editors review pricing and capabilities quarterly.
Can I suggest a tool we're missing?: Yes — submit it here. Our team reviews submissions weekly.