No free plan. The cheapest way in is paid plan at ~$5–$10 per million characters for TTS; comparable per-minute pricing for STT. Consider free alternatives in the customer support agents category if budget is tight.
Inworld currently holds the #1 spot on the public TTS Arena leaderboard, offers sub-200ms latency optimized for real-time conversation, and provides a unified API covering TTS, STT, speech-to-speech, and LLM routing in a single integration rather than requiring multiple vendor connections.
Pricing is usage-based, generally in the range of $5–$10 per million characters for text-to-speech with comparable per-minute rates for STT. Enterprise customers can negotiate volume discounts through direct sales. There is a free tier for initial development and testing.
LLM Routing dispatches requests across multiple underlying language models so each turn can be served by the optimal model for that specific intent, balancing cost, latency, and quality dynamically rather than locking into a single provider.
Yes. Inworld targets production conversational applications including customer support agents, IVR replacements, and enterprise voice assistants with enterprise security certifications (SOC 2, GDPR, HIPAA) and dedicated support tracks.
Yes. Inworld offers voice cloning and custom voice capabilities as part of its TTS platform, building on its heritage in expressive AI character voices for gaming applications.
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Last verified March 2026