Realtime TTS-2Speak naturally in any language with voices that truly understand emotion

Realtime TTS-2 by Inworld AI

Inworld AI delivers the #1 ranked realtime voice AI platform, featuring Realtime TTS-2 for human-like conversational speech. Built for developers creating voice agents, companions, and interactive experiences, it combines top-ranked text-to-speech, speech-to-speech, and intelligent LLM routing with sub-130ms latency.

Product Highlights

• #1 Ranked TTS Quality: Ranked first by real users on the Artificial Analysis Speech Arena, with 3 of the top 5 models being Inworld
• Advanced Voice Direction: Add bracketed instructions anywhere in text to adjust tone, speed, volume, vocal style, and pauses dynamically
• Voice Cloning & Design: Clone voices from 15 seconds of audio or design new voices via text description, with cross-lingual support for 100+ languages
• Realtime Latency: Sub-130ms first-chunk latency for Mini model, under 250ms for Max and Realtime TTS-2
• Intelligent LLM Routing: Single API routing across 200+ models including OpenAI, Anthropic, Google with zero added latency
• Enterprise Security: SOC2 Type II certified, HIPAA and GDPR compliant infrastructure

Use Cases

• AI Companions: Build emotionally engaging, voice-first companions with natural conversational flow and relationship-building capabilities
• Customer Support: Deploy intelligent voice agents that understand context, handle multi-turn conversations, and integrate with business tools
• Gaming & Interactive Media: Create immersive NPCs and characters with dynamic, responsive voice interactions
• Training & Education: Develop interactive coaching and learning experiences with personalized voice feedback
• Healthcare Applications: HIPAA-compliant voice AI for patient engagement, triage, and wellness coaching

Target Audience

Ideal for developers, AI engineers, and product teams building voice-first applications, conversational AI agents, and interactive experiences across industries including healthcare, gaming, education, and customer service.