> ## Documentation Index
> Fetch the complete documentation index at: https://gladia-95-feat-refacto-docs.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Models

> Compare Gladia speech-to-text models and choose the right one for your use case.

Pick a model with `model` in your request. Omit it to use the default: **`solaria-1`**.

## Choose your model

<CardGroup cols={2}>
  <Card title="Solaria-3" icon="sparkles" href="#solaria-3">
    Highest accuracy on European real-world audio. Pre-recorded only.
  </Card>

  <Card title="Solaria-1" icon="globe" href="#solaria-1">
    Default generalist. 100+ languages, async and live, code switching.
  </Card>
</CardGroup>

## Comparison

|                        | **Solaria-3**                                                   | **Solaria-1** (default)                            |
| ---------------------- | --------------------------------------------------------------- | -------------------------------------------------- |
| **Best for**           | European real-world / business audio                            | Global coverage across any domain                  |
| **Modes**              | Pre-recorded only                                               | Pre-recorded + live                                |
| **Languages**          | EN, FR, DE, ES, IT                                              | 100+ languages                                     |
| **Code switching**     | No                                                              | Yes                                                |
| **Accuracy**           | **9.6%** WER on EN production audio (26% better than Solaria-1) | Strong multilingual; best on clean / formal speech |
| **Audio Intelligence** | All add-ons                                                     | All add-ons                                        |
| **Pricing**            | [Same plan rates](https://www.gladia.io/pricing)                | [Same plan rates](https://www.gladia.io/pricing)   |

## Select a model in your API call

Set `model` to `"solaria-3"` or `"solaria-1"`:

<CodeGroup>
  ```javascript JavaScript theme={null}
  import { GladiaClient } from "@gladiaio/sdk";

  const gladiaClient = new GladiaClient({ apiKey: "YOUR_GLADIA_API_KEY" });

  const transcription = await gladiaClient.preRecorded().transcribe(
    "YOUR_AUDIO_URL_OR_LOCAL_PATH",
    {
      model: "solaria-3",
      language_config: {
        languages: ["fr"],
      },
    }
  );
  ```

  ```python Python theme={null}
  from gladiaio_sdk import GladiaClient

  gladia_client = GladiaClient(api_key="YOUR_GLADIA_API_KEY").prerecorded()

  transcription = gladia_client.transcribe(
      "YOUR_AUDIO_URL_OR_LOCAL_PATH",
      {
          "model": "solaria-3",
          "language_config": {
              "languages": ["fr"],
          },
      },
  )
  ```

  ```bash cURL theme={null}
  curl --request POST 'https://api.gladia.io/v2/pre-recorded' \
    --header 'x-gladia-key: YOUR_GLADIA_API_KEY' \
    --header 'Content-Type: application/json' \
    --data-raw '{
      "audio_url": "YOUR_AUDIO_URL",
      "model": "solaria-3",
      "language_config": {
        "languages": ["fr"]
      }
    }'
  ```
</CodeGroup>

<Note>
  With `"solaria-3"`, there is no code switching. You can pass languages in `language_config.languages` (for example `["fr"]`, or several from EN/FR/DE/ES/IT) so the model can pick among those covered languages. Once the language is detected, it sticks to it for the rest of the file.
</Note>

## Solaria-3

Highest accuracy on noisy, conversational European audio (calls, meetings, field recordings).

### When to use

Use **`solaria-3`** if:

* Audio is **pre-recorded**
* Language is **EN, FR, DE, ES, or IT**
* You prioritize **accuracy on real production audio**
* You can constrain detection to the **covered languages** (no mid-file switching)

Use Solaria-1 instead for live streaming, code switching, languages outside those five, or clean / formal speech.

### Get started

<CardGroup cols={2}>
  <Card title="Pre-recorded transcription" icon="file-audio" href="/chapters/pre-recorded-stt/quickstart">
    Transcribe files with `model: "solaria-3"`.
  </Card>

  <Card title="SDK integration" icon="code" href="/chapters/integrations/sdk">
    Call Solaria-3 from JavaScript or Python.
  </Card>
</CardGroup>

## Solaria-1

Maximum language coverage. Works async and live, with code switching.

### When to use

Use **`solaria-1`** (or omit `model`) if:

* You need **live / real-time** transcription
* You need **100+ languages** or **code switching**
* Audio is **clean read-speech** or formal / institutional

Ideal default for voice agents, live captions, and global multilingual products.

### Get started

<CardGroup cols={3}>
  <Card title="Live transcription" icon="bolt" href="/chapters/live-stt/quickstart">
    Stream audio in real time.
  </Card>

  <Card title="Pre-recorded transcription" icon="file-audio" href="/chapters/pre-recorded-stt/quickstart">
    Batch-transcribe with the default model.
  </Card>

  <Card title="SDK integration" icon="code" href="/chapters/integrations/sdk">
    Integrate with the official SDKs.
  </Card>
</CardGroup>

<CardGroup cols={2}>
  <Card title="Code switching" icon="language" href="/chapters/language/code-switching">
    Handle mixed-language conversations.
  </Card>

  <Card title="Supported languages" icon="globe" href="/chapters/language/supported-languages">
    Full language list.
  </Card>
</CardGroup>

<Tip>
  Measuring accuracy on your own traffic? See [Benchmarking](/chapters/how-to-use-gladia/benchmarking).
</Tip>