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Voice AI · Tool
Cartesia
ResearchedCartesia is a voice AI platform offering real-time text-to-speech (Sonic-3.5), streaming speech-to-text (Ink), and a code-first voice agent development platform (Line). Built on State Space Models, it delivers sub-100ms latency across 40+ languages.
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In one minute
Start here for the decision-making essentials: what Cartesia does, who it is for, how it is accessed, and the first-party sources behind this profile.
Pricing2 options
Free plan is $0/month with 20K credits/month and $1 prepaid agents/month.
Pro plan is $5/month with 100K credits/month, commercial use license, and instant voice cl
Platforms
Voice AI platform
API accessNot public
FoundedNot disclosed by source
AvailabilityWeb / remote
LicenseProprietary
Best suited to
Source-backed fit Developers building real-time voice AI applications Enterprise teams shipping production voice agents Teams scaling from prototype to mission-critical voice infrastructure Regulated-sector enterprises needing compliant voice deployments Users in the United States only Cartesia is built for developers scaling voice AI.
Decision support
6 sourced answersCommon questions and adoption checks
Short answers to the questions buyers and builders commonly ask about Cartesia. Each answer cites the shared ledger below, where every source is listed once.
01What does Cartesia say it can do?
Real-time text-to-speech via Sonic-3.5 · Streaming speech-to-text transcription via Ink · Cartesia offers Text-to-Speech (Sonic), Speech-to-Text (Ink), and Voice Agents (Line). · Python text to speech API for lifelike, multilingual voices with ultra-low latency
Integrate real-time text-to-speech with Sonic-3.5, Cartesia
02Who is Cartesia intended for?
Users in the United States only · Cartesia is built for developers scaling voice AI. · Cartesia's Media-industry customer Quora uses Sonic on its Poe platform to enable users to · Contact center industry, including businesses running LLM-powered voice agents
the Services are designed for users in the United States only and are not intended for users located outside the United States
03What use cases does Cartesia describe?
Fraud detection with real-time outbound verification calls and step-up authentication · Cartesia targets voice AI workloads ranging from initial prototypes to mission-critical vo · Cartesia is used by teams shipping real-time voice AI applications · Powering production voice agents for enterprise conversational AI at scale
Fraud detection Real-time outbound verification calls on suspicious transactions, step-up authentication
04What pricing information is available for Cartesia?
Free plan is $0/month with 20K credits/month and $1 prepaid agents/month. · Pro plan is $5/month with 100K credits/month, commercial use license, and instant voice cl
Free $0 /mo Start free 20K credits / month $1 prepaid agents / month
Ledger citation[4] cartesia.ai/pricing
05What integrations does Cartesia document?
Sonic is integrated with Together AI's Voice Platform, serving millions of audio minutes · Cartesia is integrated with ServiceNow to power secure, real-time enterprise voice agents · Cartesia Sonic is integrated into Quora's Poe chat platform, accessible via the @Cartesia · Integrated as a voice provider within Retell AI's no-code voice agent platform
Sonic comes natively to serve millions of audio minutes on Together AI's Voice Platform
06How can Cartesia be deployed or accessed?
Cartesia supports India-resident, multilingual voice agent deployments for enterprises in · India-resident data processing aligned with regulatory, governance, and auditability requi
India-resident, multilingual voice agents for enterprises in regulated sectors
Decision guide
Voice AICapabilities and operating fit
This profile connects the jobs Cartesia is described as handling with its delivery model, access options and the subjects used to match it to related products in this directory.
Common use cases
- Real-time outbound verification calls for fraud detection
- Step-up authentication on suspicious transactions
- Multilingual AI video dubbing with voice cloning
- India-resident, multilingual voice agent deployments for regulated sectors
- Fraud detection with real-time outbound verification calls and step-up authentication
- Cartesia targets voice AI workloads ranging from initial prototypes to mission-critical vo
Topics mapped
Verified capabilities
- Real-time text-to-speech via Sonic-3.5
- Streaming speech-to-text transcription via Ink
- Cartesia offers Text-to-Speech (Sonic), Speech-to-Text (Ink), and Voice Agents (Line).
- Python text to speech API for lifelike, multilingual voices with ultra-low latency
- Blazing fast 40ms time-to-first-audio
- Instantly clone a voice from a 3 second clip, preserving speaking style, accent, and emoti
- Fine control over pitch, speed, and emotion
- No hallucination — accurate voice transformations without distortions
Recorded integrations
Sonic is integrated with Together AI's Voice Platform, serving millions of audio minutesCartesia is integrated with ServiceNow to power secure, real-time enterprise voice agentsCartesia Sonic is integrated into Quora's Poe chat platform, accessible via the @Cartesia Integrated as a voice provider within Retell AI's no-code voice agent platformCartesia's Line voice agent orchestration integrates with ServiceNow AI Voice Agents (launIntegrates into applications via an API-style integration
Intended audiences
Access signals
- Pricing model
- Free plan is $0/month with 20K credits/month and $1 prepaid agents/month. · Pro plan is $5/month with 100K credits/month, commercial use license, and instant voice cl
- API
- Not publicly listed
- Source links
- 17 recorded
Source-backed
Updated July 22, 2026Verified facts
Each fact points to a recorded source, making it easy to distinguish verified product information from claims that need checking.
Cartesia | AI that learns and interacts like humans
Real-time text-to-speech via Sonic-3.5 · Streaming speech-to-text transcription via Ink · Line platform for building and shipping enterprise voice agents
Real-time text-to-speech via Sonic-3.5
Streaming speech-to-text transcription via Ink
Line — platform for building and shipping enterprise voice agents
State Space Models (SSMs)
Ranked #1 in Speech Arena and Speech to Text leaderboards by Artificial Analysis
View 32 more verified facts
Fraud detection with real-time outbound verification calls and step-up authentication
Cartesia offers Text-to-Speech (Sonic), Speech-to-Text (Ink), and Voice Agents (Line).
Free plan is $0/month with 20K credits/month and $1 prepaid agents/month.
Pro plan is $5/month with 100K credits/month, commercial use license, and instant voice cloning.
Cartesia's Text-to-Speech model is named Sonic-3.5.
Enterprise plan includes custom concurrency limits, DPAs and BAAs for compliance, Shared Slack channel, SSO, and security questionnaires.
Cartesia targets voice AI workloads ranging from initial prototypes to mission-critical voice infrastructure.
Python text to speech API for lifelike, multilingual voices with ultra-low latency
Blazing fast 40ms time-to-first-audio
Instantly clone a voice from a 3 second clip, preserving speaking style, accent, and emotion
Fine control over pitch, speed, and emotion
No hallucination — accurate voice transformations without distortions
40+ languages with a wide range of accents and native-speaker quality voices
Text-to-speech (Sonic)
Speech-to-text (Ink)
Voice agents (Line)
Users in the United States only
Cartesia offers three voice AI products: Sonic (text to speech), Ink (speech to text), and Line (voice agents)
Cartesia is used by teams shipping real-time voice AI applications
Sonic is integrated with Together AI's Voice Platform, serving millions of audio minutes
Cartesia is integrated with ServiceNow to power secure, real-time enterprise voice agents
Cartesia delivers sub-100ms latency for voice AI applications
Cartesia supports India-resident, multilingual voice agent deployments for enterprises in regulated sectors
AI Dubbing provides multilingual video dubbing with fine-grained control over pitch, speed, and emotion
Voice cloning from a 3 second clip that preserves the original speaker's speaking style, accent, and emotion
Supports 40+ languages with a wide range of accents at native-speaker quality
No hallucination: accurate and reliable voice dubbing without errors or misinterpretations
Cartesia offers text-to-speech (Sonic), speech-to-text (Ink), and a voice agent development platform (Line).
Line is Cartesia's modern, code-first voice agent development platform.
Cartesia's text-to-speech platform is GDPR compliant.
Ink is a family of streaming speech-to-text (STT) models for developers building real-time voice applications.
Ink-Whisper is positioned as the fastest, most affordable STT model designed for enterprise-grade voice agents.
Practical capabilities
8 documented areasWhat it helps with
A concise view of the jobs, capabilities and integrations described in the recorded product sources.
Real-time outbound verification calls for fraud detection
Step-up authentication on suspicious transactions
Multilingual AI video dubbing with voice cloning
India-resident, multilingual voice agent deployments for regulated sectors
Fraud detection with real-time outbound verification calls and step-up authentication
Cartesia targets voice AI workloads ranging from initial prototypes to mission-critical vo
Cartesia is used by teams shipping real-time voice AI applications
Powering production voice agents for enterprise conversational AI at scale
Availability
Source checkedWhere it runs and where to get it
Documented product formats, platforms and official distribution destinations. Availability can vary by region and plan.
Cost / license
Free plan is $0/month with 20K credits/month and $1 prepaid agents/month. · Pro plan is $5/month with 100K credits/month, commercial use license, and instant voice cl
Platforms
Line — platform for building and shipping enterprise voice agentsLine is Cartesia's modern, code-first voice agent development platform.Telephony and digital platforms (multichannel)Voice AI platform
Adoption notes
DeploymentCartesia supports India-resident, multilingual voice agent deployments for enterprises in · India-resident data processing aligned with regulatory, governance, and auditability requi
LicenseNot disclosed by source
Model supportCartesia's Text-to-Speech model is named Sonic-3.5. · Ink is a family of streaming speech-to-text (STT) models for developers building real-time · Ink-Whisper is positioned as the fastest, most affordable STT model designed for enterpris · Cartesia's Sonic model for text-to-speech has 90ms latency with best-in-class naturalness · Cartesia's Ink-Whisper model is a fast streaming speech-to-text model optimized for real-t
Data controlEnterprise plan includes custom concurrency limits, DPAs and BAAs for compliance, Shared S · Cartesia's text-to-speech platform is GDPR compliant.
Learning curveIntermediate
Primary use casesReal-time outbound verification calls for fraud detection, Step-up authentication on suspicious transactions, Multilingual AI video dubbing with voice cloning, India-resident, multilingual voice agent deployments for regulated sectors, Fraud detection with real-time outbound verification calls and step-up authentication, Cartesia targets voice AI workloads ranging from initial prototypes to mission-critical vo, Cartesia is used by teams shipping real-time voice AI applications, Powering production voice agents for enterprise conversational AI at scale, Voice AI for financial services customer interactions including loan origination, lead eng, Powers high-scale outbound voice agent calls (20M+ outbound calls per month, 5,000 peak ca, Customer care, onboarding, and collections workflows, BFSI and healthcare sectors, 24/7 automated customer service self-service (troubleshooting, billing, product info), Modernizing IVR with real-time virtual agents, Scaling outbound communications (follow-up surveys, appointment reminders, delivery notifi, Customer Support voice applications
What to verify before adopting
Evolution and major updates
Research in progressCartesia timeline
A concise history of software releases and material product changes. Events appear only when a dated source supports what changed.
Scheduled for research
Building a reliable release history.
This profile is being checked for dated releases and material product changes. Nothing appears here until the exact date and event can be verified from a recorded source.
Dated event Short explanation Original source
Citation ledger
17 unique pagesRecorded sources
Facts, answers, structured details, milestones and primary resource links cite this shared ledger. Each external page appears once; release tags from the same GitHub project are grouped under one release history.
- 1cartesia.ai 10 facts · 2 answers · Official site
- 2cartesia.ai/customers 6 facts · 3 answers · Official site
- 3cartesia.ai/customers/retell 6 facts · 3 answers · Official site
- 4cartesia.ai/pricing 6 facts · 3 answers · Pricing
- 5cartesia.ai/blog 6 facts · 1 answer · Official site
- 6cartesia.ai/customers/servicenow 6 facts · 1 answer · Official site
- 7cartesia.ai/product/python-text-to-speech-api-tts 6 facts · 1 answer · Documentation
- 8cartesia.ai/customers/blue-machines 5 facts · 1 answer · Official site
- 9cartesia.ai/customers/fundamento 6 facts · Official site
- 10cartesia.ai/legal/privacy 4 facts · 2 answers · Security
- 11cartesia.ai/product/ai-voiceover 6 facts · Official site
- 12cartesia.ai/product/speech-synthesis 6 facts · Official site
- 13cartesia.ai/product/voice-reader 6 facts · Official site
- 14cartesia.ai/use-cases/customer-service 6 facts · Official site
- 15cartesia.ai/customers/quora 3 facts · 2 answers · Official site
- 16cartesia.ai/product/ai-dubbing 4 facts · Official site
- 17cartesia.ai/product/voice-cloning 4 facts · Official site
Research status95 substantive facts · 17 source pages · quality score 88/100
Connected directory
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These tools share a workflow, capability or audience with Cartesia. They may complement it rather than replace it, and are not presented as integrations or endorsements.
