# Inworld AI

**Canonical:** https://apis.io/providers/inworld/  
**Website:** https://inworld.ai/  
**APIs profiled:** 10

Inworld AI provides voice and conversational AI building blocks for games and interactive media. Public APIs cover Text-to-Speech, Speech-to-Text, a Realtime speech-to-speech API, and an LLM Router that fronts 220+ third-party models with unified billing.

## Kin Score — 32.3 / 100 (thin)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 32.3).

| Facet | Score |
|---|---|
| Discoverability | 81.5 |
| Contract Quality | 55.1 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 10.5 |
| Developer Ergonomics | 21.4 |
| Commercial Clarity | 23.7 |
| Access Clarity | 23.7 |

## Agent readiness — 33.8 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | partial |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | flavored |
| Dry Run Mode | no |

## APIs (10)

- **Inworld Text-to-Speech API** — TTS-2 and TTS-1.5 (Max/Mini) models for character voice synthesis. Priced per 1M characters with plan-tier discounts.
- **Inworld Speech-to-Text API** — Multi-provider transcription API priced at $0.35/hour standard rate.
- **Inworld Realtime API** — Low-latency speech-to-speech voice API for natural conversation experiences. Included with all plans.
- **Inworld LLM Router API** — Routing layer over 220+ LLM models, billed at provider cost via Inworld's unified API.
- **Inworld AI Models API** — Available models
- **Inworld AI Realtime API** — Realtime speech-to-speech
- **Inworld AI Router API** — LLM Router configurations
- **Inworld AI STT API** — Speech-to-Text transcription
- **Inworld AI TTS API** — Text-to-Speech synthesis
- **Inworld AI Voices API** — Voice catalog and custom voice management

## Agentic access (1)

- **Inworld Agentic Access** — 19 operations · 13 acting

## Security (3)

- **Inworld Authentication** — http · 1 scheme
- **Inworld Domain Security** — TLSv1.3 · HSTS · DMARC
- **Inworld Trust Center** — SOC 2, HIPAA, GDPR

## Plans (1)

- **Inworld Plans Pricing**

## Tags

Artificial Intelligence, Voice, Characters, Games, Conversational

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/inworld/). Scores are computed from the provider's own public artifacts under a published rubric.