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AI Voice Agent Comparison

Vapi VS Retell

Choosing between Vapi and Retell for your voice AI needs? This comparison breaks down the key differences to help you decide.

Here's our comprehensive guide to help you choose the right AI voice agent solution for your business's needs. Get into the details to compare pricing, features, and performance.

Vapi Logo
RATING
3.9
Ease of Use
Features
Support
Developer-Focused
Retell Logo
RATING
4.2
Ease of Use
Features
Support
Voice Synthesis Focused

Vapi

Vapi is a developer-focused voice AI platform that provides robust APIs and customization options. It's designed for technical teams who need flexibility and control over their voice implementations.

Retell

Retell specializes in high-quality voice synthesis with natural-sounding AI voices. Their platform focuses on realistic voice generation for various applications with relatively simple implementation.

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FEATURES

]

Key Feature Comparison

Vapi Strengths

Developer-focused API with extensive customization
Strong WebRTC integration capabilities
Robust voice processing pipeline
Good documentation for technical teams
Flexible integration with existing systems

Retell Strengths

User-friendly interface with simpler setup
Strong focus on realistic voice synthesis
More limited customization options
Better out-of-the-box conversation capabilities
Fewer integration options for complex systems
Vapi Logo
Vapi
VS
Retell Logo
Retell

[

Developer Experience

]

Vapi

4.5

Advanced API with comprehensive document...

Retell

3.8

Good developer tools with easier learnin...

[

Voice Quality

]

Vapi

4.0

High-quality voices with good customizat...

Retell

4.7

Industry-leading voice synthesis quality

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Integration Capabilities

]

Vapi

4.8

Extensive integration options with exist...

Retell

3.5

More limited but straightforward integra...

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Pricing Model

]

Vapi

3.7

Usage-based pricing, can be expensive at...

Retell

4.0

More predictable pricing structure

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Customer Support

]

Vapi

3.5

Developer-focused support with good docu...

Retell

4.2

More accessible support for non-technica...

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PRICING

]

The Pricing Comparison

Vapi Logo
Vapi
VS
Retell Logo
Retell

[

Voice AI

]

Vapi

$0.05/min + $0.066 fixed platform fee (price varies)

Retell

$0.07/min

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Phone Number

]

Vapi

Variable Price

Retell

$2.00/month

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Speech to Text

]

Vapi

$0.01/minute

Retell

Included

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Adds-on

]

Vapi

Voice Quality Upgrades

Retell

Verified Phone Number

Retell offers a more transparent and cost-effective pricing model compared to Vapi. With a flat rate of $0.07/min for Voice AI, Retell eliminates Vapi's additional fixed platform fees, which can drive up costs. Phone numbers are significantly more affordable at just $2.00/month, while Vapi's pricing varies.

Retell also includes Speech-to-Text at no extra charge, unlike Vapi's $0.01/min fee. Plus, Retell provides Verified Phone Numbers to enhance call deliverability and reduce spam risks.

Transparent Pricing
No Hidden Fees
Enhanced Features

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ENTERPRISE-GRADE

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Scalability & Reliability

Vapi ensures top-tier security with HIPAA, SOC 2 Type 1 & 2, and GDPR compliance across all plans. Retell matches these compliance standards but with different implementation approaches. Both platforms offer high reliability with 99.99% uptime and no rate limits, providing businesses with scalable, enterprise-ready solutions.

99.9% Uptime SLA
Auto-Scaling Infrastructure
Global Load Balancing
Vapi Logo
Vapi
VS
Retell Logo
Retell

[

Compliance

]

Vapi

HIPAA compliant, SOC2, GDPR

Retell

HIPAA, SOC2 Type 1&2, GDPR

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Rate limit

]

Vapi

Not Limit

Retell

Not Limit

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Uptime to date

]

Vapi

99.99%

Retell

99.99%

[

Security

]

Vapi

Strong encryption protocols

Retell

Top-tier security protocols