Inworld

Runtime TTS, STT and LLM inference for talking NPCs, with credit rollover and SOC 2 on every plan.

Inworld AI · From On-demand $0; Creator $25/mo · Official site

Feature	Status	Notes	Source
Free tier	Yes	On-Demand $0 pay-as-you-go; up to ~70 min TTS included	Source Checked 2026-11-04
Commercial license	Yes	Commercial license on every plan including On-Demand	Source Checked 2026-11-04
API	Yes	TTS, STT, Speech-to-Speech, LLM Inference APIs	Source Checked 2026-11-04
Unity SDK	Unknown	Historically had Unity SDK; not re-confirmed on pricing page today	No source yet Checked 2026-11-04
Unreal SDK	Unknown	Historically had Unreal SDK; not re-confirmed on pricing page today	No source yet Checked 2026-11-04
Godot SDK	Unknown	Not listed on pricing page	No source yet Checked 2026-11-04
Blender plugin	No	Runtime voice/LLM platform	Source Checked 2026-11-04
Engine export / embed	Yes	API embeds into production apps; audio downloads on plans	Source Checked 2026-11-04
In-game runtime	Yes	Realtime TTS-2 / Flash with concurrency limits by tier	Source Checked 2026-11-04
MCP support	Unknown	No official MCP page found today	No source yet Checked 2026-11-04

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