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What is Cartesia Sonic-3.5?

Sonic 3.5 is Cartesia's pinnacle of text-to-speech innovation, designed for fluid voice synthesis with a remarkable latency of less than 90 milliseconds and the capability to communicate in 42 languages. This advanced model excels at following transcripts accurately, vocalizing confirmation codes, and interpreting heteronyms seamlessly without requiring any preprocessing, all while embodying the expressive qualities necessary for authentic conversations. Its objective is to deliver speech that rivals native quality across a wide range of languages, prioritizing audio clarity in every output and eliminating any need for post-production adjustments. Sonic 3.5 stands out by providing high-fidelity audio, making it particularly suitable for production settings where quality, speed, and dependability are crucial. The model features a captivating conversational style with effective pacing and a genuine emotional spectrum, which is specifically tuned for various support and agent transcripts. Additionally, it articulates alphanumeric sequences—like order numbers, phone numbers, IDs, and email addresses—naturally in all supported languages, while its context-aware English pronunciation guarantees that words such as "read," "bass," and "bow" are articulated correctly according to their textual context. This remarkable sophistication in voice generation significantly enriches the user experience, positioning Sonic 3.5 as a frontrunner in the realm of text-to-speech technology. With its continuous enhancements, Sonic 3.5 promises to reshape how we interact with digital voices in the future.

What is Bland Speech v3?

Bland Speech v3 represents a cutting-edge text-to-speech technology designed to produce voice audio that mimics human speech closely, especially useful in scenarios like phone conversations where overly polished tones might feel disingenuous. This advanced model incorporates vital human characteristics such as breathing patterns, stutters, pauses, laughter, and throat-clearing by employing performance tags that are performed rather than merely recited. Users have the flexibility to either input their own scripts or make use of the Director feature to outline a dialogue, enabling Bland to meticulously shape the conversation's timing, structure, and delivery before the speech is generated. In addition to these features, the model provides voice cloning capabilities: a quick clone can be created from around 10 seconds of audio, while more professional-grade cloning necessitates at least 30 minutes of confirmed audio, during which users must verify ownership of the voice. Furthermore, Bland Speech is accessible through a web-based studio and a single API endpoint /v1/speak, which requires bearer-key authentication to ensure secure access. The audio is delivered using HTTP chunked transfer or WebSocket protocols, resulting in PCM16 WAV files at a 44.1 kHz sample rate, which guarantees excellent quality for various applications. This multifaceted functionality positions Bland Speech as a crucial resource for developers aiming to elevate their audio production capabilities, making it an indispensable solution in the realm of text-to-speech technologies.

Media

Media

Integrations Supported

Amazon Connect
Bland AI
Cal.com
Calendly
Five9
Genesys Cloud CX
HubSpot CRM
Make
NiCE CXone Mpower
Notion
Pipedream
Salesforce
Slack
Talkdesk
Twilio
Zapier
iMessage

Integrations Supported

Amazon Connect
Bland AI
Cal.com
Calendly
Five9
Genesys Cloud CX
HubSpot CRM
Make
NiCE CXone Mpower
Notion
Pipedream
Salesforce
Slack
Talkdesk
Twilio
Zapier
iMessage

API Availability

Has API

API Availability

Has API

Pricing Information

Pricing not provided
Free Version
Free Trial Offered?

Pricing Information

$0.11 per minute
Free Version
Free Trial Offered?

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Company Facts

Organization Name

Cartesia

Date Founded

2023

Company Location

United States

Company Website

docs.cartesia.ai/build-with-cartesia/tts-models/latest

Company Facts

Organization Name

Bland AI

Date Founded

2023

Company Location

United States

Company Website

www.bland.ai/speech

Categories and Features

Categories and Features

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