Voice AI that feels as good as it sounds
Inworld builds the infrastructure for production voice AI. One platform with speech-to-text, an LLM router, and the top-ranked text-to-speech, all connected on a single API so context flows between every layer. Used by developers building voice agents, AI companions, and conversational apps.
Realtime TTS-2 delivers #1-ranked voice quality with sub-130ms latency, advanced voice direction (tone, speed, volume, vocal style), and multi-turn awareness. Enables characters to respond naturally before users notice delay, with emotional expressiveness that makes interactions feel genuinely human.
Realtime TTS-2 starts at $15/1M characters (enterprise rates as low as $10/1M), up to 80% cheaper than comparable providers. Volume discounts unlock at higher tiers (20-40% off), making it cost-effective for scaling voice applications.
Advanced voice direction via bracketed inline instructions allows real-time adjustment of tone, speed, volume, vocal style, and pauses anywhere in text. Steering is faithful to prompts even for hyper-specific requests, enabling fresh and varied conversational experiences.
Developer and Growth tiers offer priority email support, SOC2 Type II certification, GDPR compliance, and optional HIPAA/BAA. Enterprise tier includes SLA, DPA, on-prem deployment, and dedicated account management for mission-critical deployments.
Voice cloning from 15 seconds of audio, text-based voice design, and cross-lingual support (100+ languages) allow users to create production-ready voices and deploy globally with a single voice identity speaking natively in any language without accent carryover.