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What is Voxtral Mini TTS 3.0?

Voxtral Mini TTS 3.0, created by Mistral AI, serves as a specialized text-to-speech tool tailored for developers aiming to build applications and services that incorporate voice capabilities. This innovative model stands out by efficiently converting text into speech in both real-time and batch processing, providing features like preset and customizable voices, emotional tone adjustments, speed variations, and tailored pronunciation settings. It also boasts the ability to produce multilingual audio and accommodate different dialects, making it particularly suitable for uses such as interactive audio, localized media distribution, voice-driven interactions, and virtual assistant roles. Developers can seamlessly leverage its voice-cloning and speech generation abilities through Mistral's API. Moreover, Voxtral Mini TTS 3.0 is part of the larger Voxtral 3 voice-agent framework by Mistral, which includes capabilities for speech recognition, reasoning, tool application, and speech synthesis; this comprehensive system is designed to be deployed on clients' own infrastructures, granting developers enhanced flexibility and control. The continuous evolution of this model in voice synthesis technology signifies the potential for developers to craft richer and more immersive user experiences, further revolutionizing how voice interactions are integrated into various applications.

What is GPT-Realtime-2.1?

GPT-Realtime-2.1 is an OpenAI realtime reasoning model for developers building voice agents, conversational AI assistants, and speech-to-speech applications. The model is designed to support fast interactive experiences where users can speak naturally and receive audio or text responses. GPT-Realtime-2.1 updates GPT-Realtime-2 with improved handling of alphanumeric recognition, silence, background noise, and interruptions. It supports text, audio, and image input, with text and audio output, while video is not supported. The model includes configurable reasoning effort so developers can balance reasoning depth, latency, and token usage for different voice-agent workflows. GPT-Realtime-2.1 also supports instruction following, function calling, tool use, and reasoning tokens for more complex applications. Its 128,000-token context window and 32,000-token maximum output allow it to manage longer conversations and richer task context. OpenAI lists support across endpoints such as Chat Completions, Responses, Realtime, realtime translations, realtime transcription sessions, Assistants, Batch, and related API services. The model’s documented pricing includes $4 per 1 million text input tokens, $0.40 per 1 million cached text input tokens, and $24 per 1 million text output tokens, with separate audio and image token pricing. GPT-Realtime-2.1 is not documented as supporting streaming, structured outputs, fine-tuning, or predicted outputs. By combining realtime speech, multimodal input, reasoning, function calling, and tool use, GPT-Realtime-2.1 gives developers a foundation for building sophisticated AI voice agents and interactive customer-facing applications.

Media

Media

Integrations Supported

LiveKit
Mistral AI

Integrations Supported

OpenAI
gpt-realtime

API Availability

Has API

API Availability

Has API

Pricing Information

$13/1M chars
Speech generation costs $13 per 1 million characters.

Pricing Information

$0.40 per cached input
Free Trial Offered?

Supported Platforms

SaaS
On-Prem

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

Mistral AI

Date Founded

2023

Company Location

France

Company Website

docs.mistral.ai/models/voxtral-mini-tts-3-0

Company Facts

Organization Name

OpenAI

Date Founded

2015

Company Location

United States

Company Website

developers.openai.com/api/docs/models/gpt-realtime-2.1

Categories and Features

Text to Speech

Not specified

Categories and Features

AI Models

Not specified

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