AI Companions

Build a companion app users return to daily

The #1 ranked voice, voice profiling that adapts to user emotion, and consumer-scale cost math on any LLM. From a research lab that doesn't ship a consumer companion of its own.

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Read the case study

Companion conversation

User

voice Custom cloned personaprofile.emotion wistful

Late night again?

Companion

session.model anthropic/claude-sonnet-4-6tts.tone soft, slow

Always. Did you eat?

TTS Router Realtime API STT

Trusted by

Wishroll/StatusOtherHalfLuvuBible Chat

The voice stack companion apps already picked.

#1 voice quality. Any LLM. Cost math that works at consumer scale.

Every voice your app needs

Works with

TTS

Library, clone, design, or a character voice unique to your app.

Pick hundreds of library voices, clone one from 5-15 seconds of audio, design from a prompt, or ship a character voice your app owns. All on #1-ranked TTS.

Every voice your companion app could want

Library voice

Hundreds to pick from

Cloned voice

5-15s of audio

Designed voice

A text description

Character voice

Unique to your app

Every voice your app needs

Works with

TTS

Library, clone, design, or a character voice unique to your app.

Pick hundreds of library voices, clone one from 5-15 seconds of audio, design from a prompt, or ship a character voice your app owns. All on #1-ranked TTS.

Every voice your companion app could want

Library voice

Hundreds to pick from

Cloned voice

5-15s of audio

Designed voice

A text description

Character voice

Unique to your app

Real cost math at consumer scale

Works with

TTS Router

Wishroll cut 95% of their AI bill migrating to Inworld.

Wishroll's published case study documents 95% AI cost reduction at 500K+ DAU and 96 minutes of daily use, without dropping voice quality.

Wishroll · published case study

95%

AI cost cut on the migration

500K+ DAU, 1h 36min avg daily engagement, same quality bar

Wishroll · published case study

95%

AI cost cut on the migration

500K+ DAU, 1h 36min avg daily engagement, same quality bar

Real cost math at consumer scale

Works with

TTS Router

Wishroll cut 95% of their AI bill migrating to Inworld.

Wishroll's published case study documents 95% AI cost reduction at 500K+ DAU and 96 minutes of daily use, without dropping voice quality.

In production at multi-million DAU

Works with

TTS Router Realtime API

The companion apps your users already pick run on Inworld.

Wishroll/Status (500K+ DAU), OtherHalf, Luvu, and Bible Chat (800K DAU) all ship on Inworld voice. Heavy users spend 8+ hours in-app daily.

In production at real companion apps

Wishroll / Status

500K DAU

95% AI cost cut

OtherHalf

Multilingual

AI companion app

Luvu

Multilingual

Wellness companion

Bible Chat

800K DAU

4-product customer

In production at multi-million DAU

Works with

TTS Router Realtime API

The companion apps your users already pick run on Inworld.

Wishroll/Status (500K+ DAU), OtherHalf, Luvu, and Bible Chat (800K DAU) all ship on Inworld voice. Heavy users spend 8+ hours in-app daily.

In production at real companion apps

Wishroll / Status

500K DAU

95% AI cost cut

OtherHalf

Multilingual

AI companion app

Luvu

Multilingual

Wellness companion

Bible Chat

800K DAU

4-product customer

Hears the tone, not just the words

Works with

STT Router TTS

Your companion notices how the user actually sounds.

When a user is tired, anxious, or lit up, the reply matches. The voice softens, speeds up, leans in, without you wiring any of that by hand.

See emotional understanding

Companions that read the room

voice profile

User

I miss them so much.

profile: grieving (0.84) · tone: soft

Companion

I'm here. Tell me what you loved about them.

Companions that read the room

voice profile

User

I miss them so much.

profile: grieving (0.84) · tone: soft

Companion

I'm here. Tell me what you loved about them.

Hears the tone, not just the words

Works with

STT Router TTS

Your companion notices how the user actually sounds.

When a user is tired, anxious, or lit up, the reply matches. The voice softens, speeds up, leans in, without you wiring any of that by hand.

See emotional understanding

Free and premium shouldn't pay the same

Works with

Router

Right-size the model for each user, not each build.

Free tier stays on a fast, cheap model. Premium gets the best reasoning. Japan gets the multilingual one. Your app never has to learn which.

Explore the Router

Route per user, per tier, per geo

Free tier

groq/gpt-oss-120b

Fast, low-cost

Premium tier

anthropic/claude-sonnet-4-6

Deeper reasoning

Japanese users

openai/gpt-5.4

Best multilingual quality

Sticky per-user routing means the same user always hits the same variant.

Free and premium shouldn't pay the same

Works with

Router

Right-size the model for each user, not each build.

Free tier stays on a fast, cheap model. Premium gets the best reasoning. Japan gets the multilingual one. Your app never has to learn which.

Explore the Router

Route per user, per tier, per geo

Free tier

groq/gpt-oss-120b

Fast, low-cost

Premium tier

anthropic/claude-sonnet-4-6

Deeper reasoning

Japanese users

openai/gpt-5.4

Best multilingual quality

Sticky per-user routing means the same user always hits the same variant.

On your side of the table

Works with

TTS

A provider without a companion app of its own.

No consumer product, no marketplace, no licensed voices competing with yours. Inworld stays a research lab shipping models and APIs for builders.

A provider that stays on your side

No consumer companion app. No marketplace. No App Store presence that could compete with yours.

On your side of the table

Models and APIs only

A provider that stays on your side

No consumer companion app. No marketplace. No App Store presence that could compete with yours.

On your side of the table

Models and APIs only

On your side of the table

Works with

TTS

A provider without a companion app of its own.

No consumer product, no marketplace, no licensed voices competing with yours. Inworld stays a research lab shipping models and APIs for builders.

FAQ

Consumer companion apps, AI friendship and roleplay platforms, character-based chat apps, AI dating, faith-based companions, and language-learning or wellness companions. Anything where users return daily to talk to a persistent persona.

Inworld TTS sits at the top of the Artificial Analysis Speech Arena: 3 of the top 5 voices are ours. Pick from a library, clone from audio, or design from a prompt. Quality holds under consumer load because Inworld is built for production scale, not demo traffic.

Wishroll cut 95% of AI cost moving from ElevenLabs to Inworld TTS at 500K+ DAU (a published case study). Additional consumer companion customers report similar magnitudes. The math works because TTS pricing is designed for consumer scale, and Router lets you pick cheaper models per tier without dropping voice quality.

Any LLM through the Router: GPT, Claude, Gemini, Llama, Mistral, and hundreds more. Switch providers in one field. Your companion isn't locked to a model vendor.

Yes. Use the Realtime API to make your companion full-duplex voice. Wellness and companion customers run on it, and additional companion customers are integrating for live experiences.

Instant voice cloning with 5-15 seconds of audio; professional cloning for higher fidelity. Per-user custom voices are supported at scale. Licensing is yours; Inworld doesn't resell the voices.

WebSocket, WebRTC, and SIP on the same endpoint. On-premise available for enterprise. GDPR and SOC 2 Type II compliant. Zero data retention on TTS.

No. Inworld is models and APIs only: no consumer companion app, no marketplace, no licensed voices that might show up alongside yours. This is a structural commitment, not a promise.