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Description

OpenAI has introduced GPT-Realtime-2, a voice model designed for dynamic live interactions that allows for seamless conversation flow while it processes requests, utilizes tools, addresses corrections, or manages interruptions, all while providing timely and relevant responses. This model is specifically crafted for a new generation of voice applications that aim to deliver a more intuitive user experience, respond with greater intelligence, and perform actions instantly. By incorporating GPT-5-level reasoning capabilities into voice interactions, GPT-Realtime-2 enhances agents' abilities to comprehend user intent, maintain context, adapt to changing requests, and utilize tools without disrupting the conversation. Developers have the option to implement brief preambles, such as “let me check that,” to inform users that the agent is currently processing their inquiry, and the model is capable of simultaneously engaging multiple tools while making its actions clear through phrases like “checking your calendar” or “looking that up now.” Additionally, it boasts improved recovery mechanisms, extended context for agent-driven tasks, and enhanced retention of specific terminology, contributing to a more effective communication experience. Overall, GPT-Realtime-2 is set to redefine how voice interactions are experienced, paving the way for smoother and more efficient user-agent dialogues.

Description

Inworld AI's Realtime TTS-2 represents a cutting-edge voice model designed for instantaneous dialogue, aiming to create a conversational experience that is as human-like as it sounds. This innovative system captures the entirety of an interaction, analyzing the user’s tone, rhythm, and emotional nuances, while also allowing developers to provide voice direction using simple English commands, similar to prompting an AI model. Unlike traditional speech generation that operates in isolation, this model incorporates the context of previous exchanges, ensuring that tone and pacing evolve throughout the conversation, meaning a response can have a completely different impact depending on the preceding context, such as humor or sadness. Furthermore, the Voice Direction feature empowers developers to guide the delivery of speech as a director would with an actor, using intuitive natural language rather than rigid emotion controls or sliders. Additionally, developers can integrate inline nonverbal cues like [sigh], [breathe], and [laugh] directly into the text, which the model seamlessly transforms into corresponding audio events. Notably, Realtime TTS-2 maintains a consistent voice identity across over 100 languages, allowing for smooth language transitions within a single interaction, enhancing its applicability in diverse multilingual settings. This capability ensures that conversations remain fluid and authentic, further bridging the gap between human and machine communication.

API Access

Has API Yes 

API Access

Has API Yes 

Screenshots View All

Screenshots View All

Integrations

ChatGPT No 
Claude No 
Gemini No 
Grok No 
OnSolo Yes 
OpenAI Yes 
Perplexity No 
gpt-realtime Yes 

Integrations

ChatGPT Yes 
Claude Yes 
Gemini Yes 
Grok Yes 
OnSolo No 
OpenAI No 
Perplexity Yes 
gpt-realtime No 

Pricing Details

$32 per 1M tokens
$32 / 1M audio input tokens ($0.40 for cached input tokens) and $64 / 1M audio output tokens
Free Trial Yes 
Free Version No 

Pricing Details

$25 per month
Free Trial No 
Free Version Yes 

Deployment

Web-Based Yes 
On-Premises No 
iPhone App No 
iPad App No 
Android App No 
Windows No 
Mac No 
Linux No 
Chromebook No 

Deployment

Web-Based Yes 
On-Premises No 
iPhone App No 
iPad App No 
Android App No 
Windows No 
Mac No 
Linux No 
Chromebook No 

Customer Support

Business Hours No 
Live Rep (24/7) No 
Online Support Yes 

Customer Support

Business Hours No 
Live Rep (24/7) No 
Online Support Yes 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) No 
In Person No 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) Yes 
In Person No 

Vendor Details

Company Name

OpenAI

Founded

2015

Country

United States

Website

openai.com/index/advancing-voice-intelligence-with-new-models-in-the-api/

Vendor Details

Company Name

Inworld

Founded

2021

Country

United States

Website

inworld.ai/blog/realtime-tts-2

Product Features

Product Features

Text to Speech

API No 
Adjust Speaking Rate / Pitch No 
Audio Optimization No 
Custom Lexicons No 
Different Voice Choices No 
Multi-Language Support No 
Synchronize Speech No 

Alternatives

Alternatives