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

# List TTS Models

> List the available Bland TTS models and their capabilities.

## Overview

Returns the Bland TTS models currently available for synthesis and cloning, with each model's supported sample rates, language list, and clone eligibility.

Use this endpoint to render model pickers, pre-validate a request before calling [Speak](/api-v1/post/speak), or check which engines support cloning before calling [Clone Voice](/api-v1/post/clone).

Results are cached for up to 5 minutes.

***

## Headers

<ParamField header="authorization" type="string" required>
  Your API key for authentication.
</ParamField>

***

## Response

<ResponseField name="models" type="array">
  Array of available models.

  <Expandable title="Model fields">
    <ResponseField name="model_id" type="string">
      Engine identifier. Use this to map a voice's `service` field back to its model.
    </ResponseField>

    <ResponseField name="display_name" type="string">
      Human-readable name suitable for UI (for example `V1`, `V2`).
    </ResponseField>

    <ResponseField name="description" type="string">
      Short description of the model's positioning.
    </ResponseField>

    <ResponseField name="sample_rates" type="number[]">
      Supported audio sample rates in Hz. Pass an `output_format` to [Speak](/api-v1/post/speak) that matches one of these.
    </ResponseField>

    <ResponseField name="max_characters" type="number">
      Maximum characters per synthesis request supported by the model.
    </ResponseField>

    <ResponseField name="can_clone" type="boolean">
      Whether [Clone Voice](/api-v1/post/clone) can produce voices on this model.
    </ResponseField>

    <ResponseField name="languages" type="string[]">
      Language codes supported for synthesis.
    </ResponseField>

    <ResponseField name="is_recommended" type="boolean">
      `true` for the model Bland currently recommends for new integrations.
    </ResponseField>
  </Expandable>
</ResponseField>

<ResponseExample>
  ```json Response theme={null}
  {
    "models": [
      {
        "model_id": "BTTS_V2",
        "display_name": "V2",
        "description": "Current-generation TTS with multilingual output and instant single-sample cloning.",
        "sample_rates": [8000, 16000, 24000, 44100],
        "max_characters": 1000,
        "can_clone": true,
        "languages": ["en", "de", "es", "fr", "hi", "it", "ja", "ko", "nl", "pl", "pt", "ru", "tr", "zh", "ar", "id", "sv"],
        "is_recommended": true
      },
      {
        "model_id": "BTTS_V3",
        "display_name": "Experimental",
        "description": "Showcase clones. Newest model, ships ahead of full V2 feature parity.",
        "sample_rates": [24000, 44100],
        "max_characters": 1000,
        "can_clone": true,
        "languages": ["en"]
      },
      {
        "model_id": "BTTS",
        "display_name": "V1",
        "description": "Legacy English-only TTS. Retained for backward compatibility, prefer V2 for new integrations.",
        "sample_rates": [8000, 16000, 24000, 44100],
        "max_characters": 1000,
        "can_clone": true,
        "languages": ["en"]
      }
    ]
  }
  ```
</ResponseExample>

***

Docs for agents: [llms.txt](/llms.txt)