--- title: Real-Time Voice Translation API | Smartcat description: Add real-time voice translation to your product with one API. Speech-to-speech translation across 280+ languages, for live support and meetings. Book a demo. canonical: https://www.smartcat.com/software-translator/real-time-voice-translation-api/ language: en updated: 2026-08-24 --- # Real-Time Voice Translation API | Smartcat ## Real-Time Voice Translation API Power your applications, platforms, and live events with instant, conversational speech-to-speech translation. Smartcat's AI-driven API delivers seamless, multilingual audio experiences that help your teams communicate effectively across languages. - [Book a demo](https://www.smartcat.com/book-a-demo/) - [Get API Key](https://smartcat.com/sign-up/) ## Seamless Speech-to-Speech Communication Across Languages ### 95%+ ### translation accuracy Achieve high translation accuracy. Ensure clear, reliable communication in any language. ### 70% ### cost reduction Reduce interpretation costs by up to 70% compared to traditional services with our scalable API. ### 4x ### faster implementation Integrate multilingual voice capabilities faster than building from scratch. Go live in days, not months. ### Instant Speech-to-Speech Translation Our **real time audio translation api** processes incoming audio, translates it, and generates a new audio stream in the target language. This creates a complete speech-to-speech experience. ### Natural, Conversational Flow Enable natural, fluid conversations with near-instantaneous audio translation. This maintains conversation flow and engagement. ### Broad Language Coverage Reach global audiences effectively with support for 280+ languages, dialects, and locales. Connect with users anywhere in the world. ### AI That Continuously Improves Our AI models learn from corrections made by expert reviewers. This feedback loop continuously improves translation accuracy and context for your specific use case. ### Simple and Scalable Integration Integrate our REST API into your existing applications with ease. Our infrastructure is built to scale with your needs, from small meetings to large-scale broadcasts. ### Seamlessly connect with your development ecosystem Integrate Smartcat with GitHub, GitLab, JIRA, and other development tools to automate internationalization and localization. Our API and connectors enable continuous localization without disrupting your development workflow. ## How Our Real-Time Speech Translation API Works ### Get Your API Key Sign up for a Smartcat account. You can instantly generate your unique API key from the developer dashboard. ### Integrate the API Connect the **real time speech translation api** to your platform with a few lines of code. Our documentation provides clear examples. ### Configure Languages Select your desired source and target languages. Choose from our extensive library of over 280 options. ### Stream Audio Send your live audio stream to the API endpoint. The system begins instant processing and translation. ### Receive Translated Audio Get the translated audio stream back in real time. Deliver a seamless multilingual experience to your users. ### Team collaboration and AI training Invite team members or expert reviewers to review content that the AI Agents generate and improve translation quality with our intuitive editor. ### Marketing ### Global Marketing Events Engage a global audience in real time. Use our API for multilingual webinars, virtual conferences, and product launches. ![Global Marketing Events](https://gqucouwbfxremfdhdosu.supabase.co/storage/v1/object/public/sc-store/17540510780251.webp) - [Learn More](https://www.smartcat.com/marketing-translation/) ### L&D ### Multilingual Corporate Training Deliver live training and onboarding sessions to your global workforce. Ensure every team member learns in their native language. ![Multilingual Corporate Training](https://gqucouwbfxremfdhdosu.supabase.co/storage/v1/object/public/sc-store/17540510834932.webp) - [Explore L&D Solutions](https://www.smartcat.com/learning-and-development/) ### Support ### Live Customer Support Provide instant, multilingual voice support. Improve customer satisfaction by resolving issues in the customer's own language. ![Live Customer Support](https://gqucouwbfxremfdhdosu.supabase.co/storage/v1/object/public/sc-store/17540510871043.webp) - [See Support Solutions](https://www.smartcat.com/ai-agents/) ### Media ### Broadcasting & Media Translate live broadcasts, interviews, and gaming streams instantly. Expand your content's reach to a worldwide audience. ![Broadcasting & Media](https://gqucouwbfxremfdhdosu.supabase.co/storage/v1/object/public/sc-store/17540510954564.webp) - [Explore Media Translation](https://www.smartcat.com/multimedia-translation/) ### For Developers: Build Multilingual Features Fast View Documentation Integrate translation directly into your applications with our developer-friendly API. Automate workflows and accelerate development. **“***The ease of integration made our decision straightforward. We deployed multilingual voice in a single sprint.***”** ### For Marketers: Launch Global Campaigns Instantly Marketing Solutions Launch live events and webinars for global audiences on day one. Drive engagement by speaking your customers' language. **“***We now host global webinars simultaneously. It helps us engage audiences in their native language and boost attendance.***”** ### For L&D Teams: Deliver Scalable Global Training L&D Translation Create and deliver multilingual training content that stays in sync with your needs. Ensure consistent learning experiences worldwide. **“***Our remote training is more effective now. Real-time translation helps us connect with our global team.***”** ## Enterprise-Ready Voice Translation ### 9.6/10 for API documentation ### 9.3/10 ease of integration ### 280+ languages supported ### 500ms average latency Start Building Multilingual Voice Features Today - [Book a Demo](https://www.smartcat.com/book-a-demo/) - [Get API Key](https://smartcat.com/sign-up/) Peggy Liao Language Access Program Manager, The City of Seattle Smartcat's Talent Marketplace, with its vast network of language professionals and automated AI-human workflows, saves us 1,000 hours of administrative and project management time every year. - [Read case study](https://www.smartcat.com/cases/city-of-seattle/) Claire Delouis Director of Learning Innovation and Digital Training, Clarins Thanks to Smartcat, we are able to translate faster, stay on-brand, and collaborate across markets with full visibility. - [Read case study](https://www.smartcat.com/cases/clarins/) Barbara Fedorowicz Translation Department Manager, Smith+Nephew Having complete oversight of our translation lifecycle in a single workspace is a game-changer. Our team collaborates efficiently with all linguistic assets readily available. - [Read case study](https://www.smartcat.com/cases/smith-nephew/) ## Proven Performance in Real-World Applications ### 50% ### reduction in live event costs Expondo cut global webinar costs in half. They replaced interpreters with Smartcat's API. - [Read case study](https://www.smartcat.com/cases/expondo/) ### 1,000+ ### hours of training localized A Fortune 500 company scaled its L&D programs globally. This saved thousands of hours on manual content work. - [Read case study](https://www.smartcat.com/cases/city-of-seattle/) ### 90% ### faster global meeting setup Babbel streamlined international meetings. This reduced setup time and improved team collaboration. - [Read case study](https://www.smartcat.com/cases/babbel/) ## Secure and Compliant Voice Data Handling Your audio streams and content remain protected. We offer SOC 2 Type II compliance and end-to-end encryption. Our comprehensive [data protection protocols](https://www.smartcat.com/security/) cover the entire translation process. ## Integrate Real-Time Translation Today Experience the power of our **real time speech translation api**. Deliver seamless, multilingual audio experiences that connect with your global audience. - [Get Started Free](https://smartcat.com/sign-up) ### What is a real time voice translation api? A **real time voice translation api** is a service that allows developers to add speech-to-speech translation to their applications. It takes an audio input in one language. It then provides a translated audio output in another language almost instantly. ### How does the AI translation improve over time? Our AI models learn from user feedback. Any corrections made by expert reviewers in the Smartcat platform help retrain the AI. This continuously improves accuracy and context-awareness for your specific content. ### What languages does the real time audio translation api support? Our API supports over 280 languages, dialects, and locales. This allows you to connect with a broad global audience. We are always expanding our language library based on customer needs. ### How does your API compare to the google speech to speech translation real time api? While other services offer strong core functionality, Smartcat provides a unique advantage. Our **real time voice translation api** is integrated into a full content lifecycle platform. It combines AI translation with a human-in-the-loop feedback system. This delivers superior accuracy for your specific use cases over time. ### What is the pricing model for the API? Our pricing is flexible and usage-based. It is designed to scale with your needs. You pay for the volume of audio you process. This makes it a cost-effective solution for businesses of all sizes. ### How do you ensure low latency for real-time conversations? Our infrastructure is optimized for speed. We use a global network of servers to process audio data close to the source. This minimizes delays and ensures a smooth, conversational experience for all users. ### Can I customize the voice output? Yes, you can choose from a variety of male and female voices across different languages. This allows you to select a voice that best fits your brand and application. Custom voice cloning is also available for enterprise plans. ### Is my audio data secure during the translation process? Absolutely. We are SOC 2 Type II compliant and use end-to-end encryption to protect your data. Your audio content is secure throughout the entire translation process, from input to output. ## Frequently Asked Questions