> ## Documentation Index
> Fetch the complete documentation index at: https://docs.aireserve.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Audio & voice models

> 8 audio & voice models on the AI Reserve gateway — ids, serving providers, pricing and links to a copy-paste request for each.

Text-to-speech, speech-to-text and realtime voice sessions.

Endpoints: `POST /v1/audio/speech` · `POST /v1/audio/transcriptions` · `POST /v1/realtime/sessions`. Prefer to search and filter? [Browse models](/models).

## ElevenLabs

| Model | Model id | Type | Pricing |
| - | - | - | - |
| [Eleven Flash v2.5](/models/catalog/eleven-flash-v2-5) *Unverified-retention opt-in* | `eleven-flash-v2-5` | Text-to-speech | billed per input character — see guide |
| [Eleven Multilingual v2](/models/catalog/eleven-multilingual-v2) *Unverified-retention opt-in* | `eleven-multilingual-v2` | Text-to-speech | billed per input character — see guide |
| [Eleven v3](/models/catalog/eleven-v3) *Unverified-retention opt-in* | `eleven-v3` | Text-to-speech | billed per input character — see guide |
| [Eleven v4](/models/catalog/eleven-v4) *Unverified-retention opt-in* | `eleven-v4` | Text-to-speech | billed per input character — see guide |
| [ElevenLabs Scribe v2](/models/catalog/scribe-v2) *served by fal* | `scribe-v2` | Speech-to-text | \$0.008 / minute |

## OpenAI

| Model | Model id | Type | Pricing |
| - | - | - | - |
| [GPT-4o mini Transcribe](/models/catalog/gpt-4o-mini-transcribe) | `gpt-4o-mini-transcribe` | Speech-to-text | — |

## xAI

| Model | Model id | Type | Pricing |
| - | - | - | - |
| [Grok TTS](/models/catalog/grok-tts) | `grok-tts` | Text-to-speech | billed per input character — see guide |
| [Grok Voice (realtime)](/models/catalog/grok-voice) | `grok-voice` | Realtime voice | billed per session second — see guide |


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