Speech and Translation AI


Build and deploy fully customizable multilingual speech and translation AI for your large language model and retrieval-augmented generation based applications.


What Is NVIDIA Riva?

NVIDIA® Riva is a set of GPU-accelerated multilingual speech and translation microservices for building fully customizable, real-time conversational AI pipelines. Riva includes automatic speech recognition (ASR), text-to-speech (TTS), and neural machine translation (NMT) and is deployable in all clouds, in data centers, at the edge, and on embedded devices. With Riva, organizations can add speech and translation interfaces with large language models (LLMs) and retrieval-augmented generation (RAG) to transform chatbots into engaging, expressive multilingual assistants and avatars.

Unveiling End-to-End Speech and Translation AI Magic

Deliver AI chatbots with state-of-the-art multilingual transcription, translation, and voices.


Explore the Benefits of NVIDIA Riva

Accurate Multilingual Transcriptions and Expressive Voices

Achieve high multilingual transcription and translation accuracy, and provide out-of-the-box, expressive, professional female and male voices with state-of-the-art models pretrained on thousands of hours of audio on NVIDIA supercomputers.

Fully Customizable

Customize across ASR pipelines for different languages, accents, domains, vocabulary, and context for the best possible accuracy for your use case and across TTS pipelines for the brand voice and intonation you want.

Flexible Deployments

Provide consistent experiences to hundreds of thousands of concurrent users with higher inference performance than existing technology, and deploy anywhere—in data centers, on premises, in the cloud, at the edge, or in embedded devices.

Enterprise-Grade AI

Accelerate the development and deployment of production-grade, multilingual, voice-enabled AI applications with NVIDIA AI Enterprise, an end-to-end, cloud-native software platform for enterprise-grade secure and stable generative AI.

NVIDIA Riva NIMs—Now Available for Download

Experience new ASR, TTS, and NMT microservices now available—including Parakeet models that deliver record setting accuracy and performance—designed to provide optimized AI inference for speech and translation AI.

Use Cases

How Riva Is Being Used

Find out how industry leaders are driving innovation with Riva.

Q&A Assistants

Companies are deploying Q&A assistants to automatically address the queries of millions of customers and employees around the clock. With Riva’s speech and translation AI microservices, these assistants provide helpful and natural responses at every turn of the conversation despite background noise, poor sound quality, and diverse speaker dialects and accents.

Agent Assists

Consumers expect contact center agents to resolve their issues quickly and efficiently. To meet these expectations and deliver the best customer and agent experiences possible, enterprises across industries are implementing agent-assist technology powered by Riva speech and translation AI.

Digital Avatars and Brand Ambassadors

To enhance customer service experiences and build strong relationships with their customers, businesses are building avatars with recognizable brand voices. With Riva, they can create a unique, high-quality, personalized voice with just three seconds of speech data.

Video-Conferencing Transcription

With hundreds of millions of online meetings held daily, video conferencing has become an indispensable tool for enterprises. Through Riva's real-time transcription, video conferencing applications achieve impressive accuracy in live captioning and meeting summarizations, accommodating users with worldwide accents and diverse domain-specific vocabularies.


In the global economy, businesses operate across countries and serve customers with diverse linguistic and cultural backgrounds. This diversity in global languages poses a unique challenge, as hiring native speakers and training employees in multiple languages isn't scalable, cost-effective, or efficient. Riva translation empowers accurate and effective communication, facilitating smooth global interactions.

Service Robots

Service robots are increasingly found in hospitals, airports, and retail stores worldwide. They aid frontline workers by handling daily repetitive tasks in restaurants and manufacturing facilities, assist customers in locating items in stores, and support physicians and nurses in patient care. With Riva, it’s easy to add speech and translation AI to service robots.

Starting Options

Ways to Get Started With NVIDIA Riva

Use the right tools and technologies to build and deploy fully customizable, multilingual speech and translation AI applications.


Experience Riva through a UI-based portal for exploring and prototyping with NVIDIA-managed endpoints, available for free through NVIDIA's API catalog.


Access NVIDIA-hosted infrastructure and guided hands-on labs that include step-by-step instructions and examples, available for free on NVIDIA LaunchPad.


Get a free license to try NVIDIA AI Enterprise in production for 90 days using your existing infrastructure. 

Customer Stories

How Industry Leaders Are Driving Innovation With Riva


Speech AI for Award-Winning Customer Care

Customer: T-Mobile

Products: NVIDIA Riva, NVIDIA-Certified Systems

Technologies: NVIDIA Data Center GPUs, NVIDIA NeMo, NVIDIA Riva


World-Class Speech AI for the Best Video Conferencing Experience

Customer: RingCentral


Technologies: NVIDIA Data Center GPUs, NVIDIA NeMo, NVIDIA Riva, NVIDIA Triton Inference Server

Academia / Higher Education

Automating Real-Time Arabic Speech Recognition

Customer: Tarteel.ai

Products: NVIDIA Riva, NVIDIA-Certified Systems

Technologies: NVIDIA NeMo, NVIDIA Riva, NVIDIA Data Center GPUs


Leading Adopters Across All Industries


The Latest in NVIDIA Riva Resources

Try Riva on NVIDIA LaunchPad

Have an existing speech AI project? Apply to get hands-on experience testing and prototyping your conversation-based solutions with speech skills in the high-performance Riva software stack that’s deployable today.

Get Started With Highly Accurate Custom ASR

Learn to build, train, fine-tune, and deploy a GPU-accelerated ASR service with Riva that includes customized features.

Talk to Your Data in Your Native Language

Join AI experts to learn how to build, fine-tune, and deploy production-ready, multilingual speech and translation AI on top of LLM-based applications, enabling your chatbots to speak to your customers in their natural languages.

Using Speech AI for Transcription, Translation, and Voice

Build world-class, fully customizable, speech AI applications such as intelligent virtual assistants, audio transcription services, and digital avatars.

Reinvent Contact Center Experiences With NVIDIA Riva

By generating an accurate transcript of customer interactions in real time, Riva enables AI to provide contextual insights, measure sentiment, and recommend the next-best action to an agent, ensuring a great personalized experience.

Robot Dog Fetches Snacks Across Town

Watch as Spot uses speech AI to order snacks across town without an internet connection. Instead of uploading voice commands to the cloud and processing them on the server, Spot processes everything locally for seamless, efficient performance and delivery.

Next Steps

Ready to Get Started?

Use the right tools and technologies to build and deploy fully customizable, multilingual, speech and translation AI applications.

For Developers

Explore everything you need to start developing with NVIDIA Riva, including the latest documentation, tutorials, technical blogs, and more.

Get in Touch

Talk to an NVIDIA product specialist about moving from pilot to production with the security, API stability, and support of NVIDIA AI Enterprise.


In 2021, AI2Labs spun off from Yoozoo Games as a local tech startup in Singapore. AI2Labs innovates, experiments, and develops AI products and applications, enabling efficient processes and improving sustainability and business outcomes.

AI2Labs integrated Riva into their Speakr—domain-specific speech AI—speech recognition API to accommodate the intricacies of Asian speech and business domains and achieved state-of-the-art Singlish translation accuracy.


Avaya specializes in cloud communications and workstream collaboration solutions, providing unified communications, contact center, communications platform as a service (CPaaS), and services with their OneCloud platform.

Avaya integrated the NVIDIA Riva speech-to-text engine for real-time captions at scale. Riva enables better transcription quality, lower word-error rate, and economical delivery.


For over 10 years, the Applied AI Group at C-DAC in Pune, India, has focused on research and development of speech technology. They’ve successfully created a cutting-edge speech-to-text (STT) system for Indic languages such as Hindiand Marathi. The group continues to advance their work by exploring AI-enabled, open-source deep learning frameworks, libraries, and tools for creating STT and speech-enabled applications for other Indic and low-resource languages. Experiments were conducted using various neural network architectures and topologies from NVIDIA’s open-source NeMo framework, with Citrinet and Conformer-CTC network topologies proving to be effective in building and training neural acoustic models for speech recognition. These models were trained on single- and multi-node Param Siddhi AI systems, optimizing training time and performance. Finally, the models were deployed for real-time and batch-mode inference using the Riva GPU-accelerated production pipeline.


NCS, a subsidiary of Singtel Group, is a leading technology services firm with presence in Asia Pacific and partners with governments and enterprises to advance communities through technology. Combining the experience and expertise of its 12,000-strong team across 61 specialisations, NCS provides differentiated and end-to-end technology services to clients with its NEXT capabilities in digital, data, cloud and platforms, as well as core offerings in application, infrastructure, engineering and cybersecurity. NCS also believes in building a strong partner ecosystem with leading technology players, research institutions and start-ups to support open innovation and co-creation. 

NCS uses NVIDIA Riva TTS in Breeze—the driver’s companion app—for voice-guided navigation, live traffic and road condition updates, real-time parking rates, and electronic road pricing rates and operating hours, to help Singapore drivers experience smooth driving journeys. 

Learn more.


Customer Story


RingCentral, a leading provider of global enterprise cloud communications, collaboration, and contact center solutions, serves millions of users. The RingCentral platform empowers collaboration from any location and device, improving business efficiency and customer satisfaction. RingCentral uses NVIDIA Riva for video conferencing transcription for 200,000 concurrent users on their platform.

Learn more.


Customer Story

GTC Session


Snap is a camera and social media company that enables multimedia message creation with filters and effects. To create more interactive experiences, Snapchat users play with Lenses—a feature that adds real-time effects into snaps—over 6 billion times per day. 

NVIDIA Riva’s noise- and lingo-optimized speech AI service is integrated into Snap AR Lens Studio, enabling creators—artists and developers—to build gripping augmented reality (AR) experiences.


T-Mobile, a supercharged Un-carrier, delivers an advanced 4G LTE and transformative 5G network for the best customer experience. To empower contact center agents, T-Mobile implements Expert Assist. This AI-based software uses NVIDIA Riva to transcribe real-time customer conversations that feed recommenders and assist thousands of agents.

With Riva, T-Mobile fine-tunes automatic speech recognition models on custom datasets and interprets customer jargon accurately across noisy environments.

Learn more.


Customer Story

GTC Session

Building Speech AI Applications

Explore how to get started with integrating and deploying Riva ASR and TTS models in production with high-performance inference and minimal effort.

An Introduction to NVIDIA Riva

Learn about Riva’s architecture, key features, and components for building speech and translation AI services.

NVIDIA Parlays Win in Voice Challenge

Read how a team of NVIDIANs won the LIMMITS ’24 challenge, which asked contestants to recreate in real time a speaker’s voice in English or any of six languages spoken in India with the appropriate accent.