Inworld AI
Inworld AI offers realtime voice models, text to speech and hosted open LLMs through an API for consumer apps and assistants. It is built for developers and product teams adding low latency voice and conversation features.
You are building a voice tutor or a game character, and the half second pause before it answers is what makes it feel fake. Inworld AI sells the pieces for real-time voice apps: text to speech, speech to text, speech to speech conversations, and hosted language models through its own inference service.
Its text to speech models, TTS-2 and the faster TTS-2 Flash, support custom voices, voice design and professional voice clones. Inworld Inference gives access to more than 100 language models, and the newer service is pitched at consumer apps where response time matters. Developers get docs, a playground to hear every voice, and a skill file to paste into a coding assistant.
Its customers build companion and social apps, tutoring and language apps, health and wellness coaches, voice agents for support and sales, and games and narrated media.
Pricing
On-Demand is pay as you go with no monthly fee: TTS-2 is $25 per million characters, TTS-2 Flash $15, speech to text $0.15 an hour, and models from $0.07 per million tokens. Monthly plans give the same amount back in credits and lower the rates: Creator $25, Builder $100, Developer $300 and Growth $1,500. Yearly billing gives two months free. Prices checked on inworld.ai in October 2026.
Good to know
- Credits roll over for three months.
- Higher plans raise the number of custom voices and voice clones, from 100 custom voices on On-Demand to 30,000 on Growth, and raise concurrency limits.
- A commercial license is included from the On-Demand plan up.
Security
Every plan is covered by GDPR and SOC 2 Type II. Zero data retention, HIPAA and a BAA are add-ons on Growth.
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