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What is Eleven Realtime?

Eleven Realtime presents a speech-to-speech API that is designed specifically for developers, allowing them to incorporate live voice interactions into their applications and AI agents. This cutting-edge service combines speech recognition, turn-taking features, language-model logic, and voice synthesis while offering both Mini and Max model variations to suit different conversational needs. Developers can easily utilize these models via the Realtime API or through ElevenAgents, ensuring smooth integration into their systems. The streaming interface is meticulously designed to improve interactive voice experiences across a range of applications, including virtual assistants, customer support platforms, educational tutors, and engaging characters. Customization options for agent configurations permit adjustments to prompts, voices, tools, knowledge bases, and conversational flows, providing remarkable flexibility. Moreover, the usage of Realtime is billed on a per-minute basis, with additional charges for model input and output tokens. This product is tailored for developers and organizations that prioritize real-time conversational experiences and voice-driven customer interactions, significantly boosting user engagement and satisfaction levels. With its extensive capabilities, Eleven Realtime stands out as an essential tool for contemporary application development, proving to be an asset for those aiming to innovate in the field of interactive voice technology.

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.

Media

Media

Integrations Supported

ElevenLabs
OpenAI

Integrations Supported

API Availability

Has API

API Availability

Has API

Pricing Information

Realtime agents are billed at the standard ElevenAgents per-minute rate plus input, cached-input, and output-token charges for the selected model. Eleven Realtime v1 Max costs more per token than Mini; rates vary by plan and model.

Pricing Information

Pricing not provided

Supported Platforms

SaaS

Supported Platforms

SaaS

Customer Service / Support

Web-Based Support

Customer Service / Support

Web-Based Support

Training Options

Documentation Hub

Training Options

Documentation Hub

Company Facts

Organization Name

ElevenLabs

Date Founded

2022

Company Location

United States

Company Website

elevenlabs.io/realtime

Company Facts

Organization Name

Cartesia

Date Founded

2023

Company Location

United States

Company Website

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

Categories and Features

AI Voice Models

Not specified

Categories and Features

AI Models

Not specified

AI Voice Models

Not specified

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