---
title: "Language Models"
slug: "sr-language-models"
description: "Learn how to retrieve and use language models in Knovvu SR, including selecting specific model versions or using the latest optimized model automatically."
updated: 2025-01-31T07:00:41Z
published: 2025-01-31T07:00:41Z
canonical: "docs.knovvu.com/sr-language-models"
---

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

# Language Models

This documentation provides a comprehensive overview of the **language models** available in the **Speech Recognition (SR) service** and how to select the appropriate version for your needs.

---

## **Endpoint Details**

- **URL:** `{{Address}}/v1/speech/dictation/models`
- **Actor:** REST Service Client
- **Goal:** Retrieve the list of available language models.
- **Pre-Conditions:** None

---

## **Example API Response**

When querying the available language models, you will receive a response similar to the following:

```
{
    "Identifier": {
        "Tenant": "Default",
        "Name": "English",
        "Variant": 4,
        "Version": 1
    }
}
```

---

## **Understanding Model Versions**

The **Model Version** parameter allows you to select a **specific model version** for processing your submitted audio.

### **Using the Latest Model Version**

To use the **latest** version of a model:

- **Set** `ModelVersion=0`
- **Or simply omit** the `ModelVersion` parameter.

📌 **Note:** Whether you explicitly set `ModelVersion=0` or do not include the parameter at all, the system will automatically select the most **up-to-date and optimized** language model, ensuring you benefit from the latest advancements in recognition accuracy and performance.

          Latest Is The Greatest!

          

By default, you do **not** need to specify the `ModelVersion` parameter. The system automatically selects the **latest and most advanced version**, providing you with the best possible recognition accuracy and performance.

---

### **Using a Specific Model Version**

If you need to use an **older version** of a language model:

1. **Retrieve the available versions** by making a `GET` request to the **models** endpoint.
2. **Use the `ModelVersion` parameter** to specify the desired version when making a transcription request.

📌 **Mapping Note:** The `Variant` field in the model response corresponds to the `ModelVersion` parameter when making a request.

          **Versioning Syntax**

          

`Variant = ModelVersion`

#### **Example Request for a Specific Model Version**

```
curl --location '{{Address}}/v1/speech/dictation/request' \
--header 'Content-Type: audio/wave' \
--header 'ModelName: Turkish' \
--header 'ModelVersion: 4' \
--header 'Tenant: Default' \
--header 'Authorization: Bearer Token' \
--data 'audio.wav'
```

---

## **When to Use Model Versions?**

- ✅ When you **want to use the latest version**, no additional configuration is required.
- ✅ When you **need an earlier version** for consistency, specify the desired `ModelVersion` in your request.