Inworld

#1 ranked TTS with under 200ms latency, voice cloning, and 25x lower cost. Realtime agents built for scale

Inworld provides realtime AI infrastructure for consumer-facing applications: first-party text-to-speech and speech-to-text models, LLM routing, and the inference underneath, all delivered through modular APIs. The company describes itself as a research lab and inference provider built for consumer scale, with TTS latency under 200ms and voice cloning.

The product line includes a realtime TTS API meant to keep users engaged with natural speech, speech-to-text that transcribes in real time, controllable speech-to-speech, and an LLM router that picks the best model and tools for each user and context. Solutions pages cover social and companion apps, learning, health and wellness, agentic workforces, and games and media. Much of the pitch is cost: the site claims customers cut voice and AI costs by 40% to 95% and publishes side-by-side rate comparisons against other providers. In this directory it sits under Automation, with tags for AI agents and avatars.

Pricing is paid, with published per-usage rates on a Growth plan and enterprise rates for larger scale. Review the pricing page, then get started with the TTS or STT API for your app.

Category: Automation. Pricing: paid. Visit website

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