Cartesia AI vs Vapi
Comprehensive side-by-side comparison — features, pricing, performance, and more.
Updated May 2026
Trust & Reliability
Cartesia AI
Users:10K-100K
Customers (per vendor):ServiceNow, Goodcall, Maven AGI +7
SOC 2
Overall Winner: Vapi
8.0/10 vs Cartesia AI at 7.2/10
Leads in:
Customizability
Integrations
AI Comparison Summary
Cartesia AI
7.2
avg score
Vapi
8.0
avg score
Vapi leads overall — particularly in Customizability and Integration Power.
Based on 6 dimensions
How scores are calculatedOverall Winner
Vapi
8.0 / 10
Cartesia AI
Best For
Building real-time voice agents for customer service
Automating sales outreach and inbound call handling
Creating localized voiceovers and dubbing for global markets
Enhancing patient experiences in healthcare with natural voices
Not Ideal For
Users seeking a simple, no-code voice generation tool for basic tasks
Individuals or small teams without development resources for API integration
Applications requiring offline voice processing without cloud connectivity
Vapi
Best For
Developers building custom voice AI applications
Companies scaling inbound and outbound phone operations
Enterprises requiring high reliability and low-latency voice interactions
Teams needing flexible integration with existing tech stacks
Not Ideal For
Non-technical users seeking a no-code voice AI solution
Individuals needing a simple, pre-built chatbot without voice capabilities
Organizations not focused on phone-based or real-time voice interactions
* Verdict is based on our algorithmic scoring of publicly available data. Learn about our methodology
Cartesia AI is best for
🎵Audio & Voice8.0🎬Video8.0🎧Customer Support7.0
Vapi is best for
🤖Automation & Agents10.0💬Chat & Conversation7.9✍️Writing & Content7.0
Filter by your use case:
Pros & Cons
Cartesia AIPros
- Industry-leading ultra-low latency (90ms for Sonic-3, 40ms for Sonic-Turbo)
- Highly natural and emotional voice generation, including laughter
- Extensive multilingual support for 40+ languages and accents
- Instant and professional voice cloning capabilities
- Developer-first API and SDKs for seamless integration
- Enterprise-grade security with SOC 2 Type II, HIPAA, and PCI Level 1 compliance
- High reliability with 99.9% uptime for mission-critical applications
- Affordable streaming speech-to-text with Ink-Whisper
Cons
- GDPR compliance is stated as achieved in a future-dated blog post, but the privacy policy states services are for US users only, creating ambiguity.
- No explicit mention of data export formats for user-generated content.
- Advanced features like Pro Voice Cloning and high concurrency are limited to higher-tier plans.
- Requires technical expertise for API and SDK integration and voice agent development.
- Limited information on specific AI models used beyond Cartesia's own Sonic and Ink.
VapiPros
- Highly configurable API for granular control
- Ultra-low latency for natural conversations
- Supports a wide range of AI models (LLM, TTS, STT)
- Comprehensive developer tools including API and CLI
- Enterprise-grade reliability and security (SOC2, HIPAA, PCI)
- Extensive integrations with business applications
- Multilingual support for global reach
- Features for testing, A/B experiments, and monitoring
Cons
- Requires developer expertise for full customization
- Pricing can become complex with usage-based components
- Limited explicit information on no-code/low-code options for business users
- Focus primarily on voice interactions, less on other modalities
Weighted Score — Adjust What Matters to You
Pick a profile or drag sliders — scores and radar update instantly on the right.
Quick profiles:
Ease of Use5
Output Quality5
Value for Money5
Customizability5
Support & Ecosystem5
Integration Power5
Dimension Comparison
Cartesia AI
7.2
/ 10
Vapi
8.0
/ 10
Your pick
Dimension Breakdown
Ease of Use
AIHow easy it is to get started and use daily
Cartesia AI
6.0
Vapi
6.0
Output Quality
AIQuality and accuracy of generated results
Cartesia AI
9.0▲ +1.0
Vapi
8.0
Value for Money
AICost vs. features and output quality
Cartesia AI
7.0
Vapi
7.0
Customizability
CalculatedAbility to tailor to specific needs
Cartesia AI
7.0
Vapi
10.0▲ +3.0
Support & Ecosystem
AIDocumentation, community, and support quality
Cartesia AI
7.0
Vapi
7.0
Integration Power
CalculatedAbility to connect with other tools and workflows
Cartesia AI
7.0
Vapi
10.0▲ +3.0
Calculated = derived from verified integration count and API/open-source signals. AI = LLM-assessed from public website content. Methodology
Data is sourced from public information and vendor websites. It may not always be up-to-date — verify pricing and features directly with the vendor before purchasing.Report inaccuracy
Frequently Asked Questions
Which is better, Cartesia AI or Vapi?
Both are strong options. Cartesia AI has a rating of 0.0/5 (0 reviews), while Vapi has a rating of 0.0/5 (0 reviews). The best choice depends on your specific use case, budget, and workflow requirements.
Is Cartesia AI cheaper than Vapi?
Cartesia AI starts at free (freemium model). Vapi starts at free (freemium model). Use the Cost Calculator above for a detailed estimate.
What are the main differences between Cartesia AI and Vapi?
Cartesia AI — "Voice AI that laughs, emotes, and pulls you into the conversation.". Vapi — "Voice AI agents for developers: simple, configurable, and scalable.". Key differences include their pricing models, platform support, integrations, and technical capabilities. See the Feature Comparison table above for a complete side-by-side breakdown.