Inworld AI

Inworld AI is a research lab and inference provider for realtime AI at consumer scale, focusing on first-party text-to-speech, speech-to-text, and LLM routing. The platform's flagship offerings are TTS-2 and TTS-2 Flash, which generate natural speech from text, plus STT for speech recognition and a router that provides access to 220+ LLM models. Inworld recently launched Realtime TTS-2 and cut prices in half or more across the stack for most developers. The platform provides voice cloning and voice design, a realtime API, playground access with large character limits, and workspace and team management features. Pricing is credit-based with an On-Demand tier that starts free and includes up to 70 minutes of TTS per month, 100 custom voices, voice cloning, realtime API access, commercial license, and community support. Paid plans are Creator at $25 per month with $25 in credits, Builder at $100 per month, Developer at $300 per month, and Growth at $1,500 per month, each adding credits, voice slots, concurrency, and discounted per-character rates, down to $12.50 per million characters for TTS-2 on Growth. Inworld also maintains open-source projects on GitHub and positions itself as infrastructure for voice-first consumer AI. The platform's blog documents launches such as Realtime TTS-2 and the consumer AI cost pricing updates, and a live demo is available at realtime.ai for evaluation. Inworld's developer resources include API documentation, playground access with 40K character requests on Creator, and open-source repositories on GitHub. The pricing model is credit-based, meaning users buy credits each month and consume them across TTS, STT, and LLM calls, with higher tiers unlocking volume discounts, more custom voice slots, increased concurrency, and premium support. For voice-first product builders, the stack covers the full pipeline from speech recognition to language understanding to speech synthesis in one vendor, reducing integration complexity compared to stitching separate providers.