In-game runtime

Designed for live player conversations at runtime (not only offline script gen).

4 of 4 tools marked Yes.

Tool	Status	Notes	Source
Inworld	Yes	Realtime TTS-2 / Flash with concurrency limits by tier	Source
Convai	Yes	Character session concurrency from 1 (Free) to 30 (Business)	Source
Charisma	Yes	Live experience minutes metered by credits	Source
NVIDIA ACE	Yes	Real-time avatar inference stack	Source