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features
design
support

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Description

StepAudio 3 represents the latest advancement in StepFun's audio model series, designed to comprehend, produce, and engage through various auditory forms including voice, sound, and music. This family features several specialized models: StepAudio 3 Realtime for seamless full-duplex dialogue, StepAudio 3 ASR for accurate speech recognition, StepAudio 3 TTS for effective speech synthesis, StepAudio 3 Gen for versatile audio generation, and StepAudio 3 Music for creating extended musical pieces. The Realtime model employs a continuous cycle of listening, conversing, thinking, and acting, adeptly interpreting not just spoken words but also nuances such as hesitation, laughter, emotions, pauses, backchannels, and interruptions. Unlike traditional systems, it can process information while articulating responses, tackle complex inquiries without disrupting the conversation, and utilize tools to fulfill tasks once it grasps the user's intent. Moreover, StepAudio 3 Gen integrates various functions like zero-shot TTS, voice design, vocal generation, sound effects, and mixed audio generation into a single cohesive framework, whereas StepAudio 3 Music allows for the creation of text-controlled songs, instrumental pieces, and vocal arrangements, making it a comprehensive tool for audio creativity. This innovative collection emphasizes the blend of interaction and creativity, pushing the boundaries of what audio models can achieve.

Description

GPT-Realtime, OpenAI's latest and most sophisticated speech-to-speech model, is now available via the fully operational Realtime API. This model produces audio that is not only highly natural but also expressive, allowing users to finely adjust elements such as tone, speed, and accent. It is capable of understanding complex human audio cues, including laughter, can switch languages seamlessly in the middle of a conversation, and accurately interprets alphanumeric information such as phone numbers in various languages. With a notable enhancement in reasoning and instruction-following abilities, it has achieved impressive scores of 82.8% on the BigBench Audio benchmark and 30.5% on MultiChallenge. Additionally, it features improved function calling capabilities, demonstrating greater reliability, speed, and accuracy, with a score of 66.5% on ComplexFuncBench. The model also facilitates asynchronous tool invocation, ensuring that dialogues flow smoothly even during extended calls. Furthermore, the Realtime API introduces groundbreaking features like support for image input, integration with SIP phone networks, connections to remote MCP servers, and the ability to reuse conversation prompts effectively. These advancements make it an invaluable tool for enhancing communication technology.

API Access

Has API No 

API Access

Has API Yes 

Screenshots View All

Screenshots View All

Integrations

Azure Voice Live API No 
ChatGPT No 
GPT-Realtime-1.5 No 
GPT-Realtime-2 No 
GPT-Realtime-2.1 No 
GPT-Realtime-Translate No 
GPT‑Realtime‑Whisper No 
Microsoft Foundry Models No 
OpenAI No 
SmartCallz No 

Integrations

Azure Voice Live API Yes 
ChatGPT Yes 
GPT-Realtime-1.5 Yes 
GPT-Realtime-2 Yes 
GPT-Realtime-2.1 Yes 
GPT-Realtime-Translate Yes 
GPT‑Realtime‑Whisper Yes 
Microsoft Foundry Models Yes 
OpenAI Yes 
SmartCallz Yes 

Pricing Details

No price information available.
Free Trial No 
Free Version No 

Pricing Details

$20 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 Yes 
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) No 
In Person Yes 

Vendor Details

Company Name

StepFun

Country

United States

Website

static.stepfun.com/blog/stepaudio3/

Vendor Details

Company Name

OpenAI

Founded

2015

Country

United States

Website

openai.com/index/introducing-gpt-realtime/

Product Features

Product Features

Alternatives

Alternatives

Seed-Music Reviews

Seed-Music

ByteDance