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

# STT

> Speech-to-text endpoints

## Overview

Speech-to-text endpoints

### Available Operations

* [CreateTranscription](#createtranscription) - Create transcription
* [CreateTranscriptionMultipart](#createtranscriptionmultipart) - Create transcription

## CreateTranscription

Transcribes audio into text. Accepts base64-encoded audio input as JSON or an OpenAI-style multipart/form-data file upload, and returns the transcribed text.

### Example Usage

```go theme={null}
package main

import(
	"context"
	"os"
	openrouter "github.com/OpenRouterTeam/go-sdk"
	"github.com/OpenRouterTeam/go-sdk/models/components"
	"log"
)

func main() {
    ctx := context.Background()

    s := openrouter.New(
        openrouter.WithSecurity(os.Getenv("OPENROUTER_API_KEY")),
    )

    res, err := s.STT.CreateTranscription(ctx, components.STTRequest{
        InputAudio: components.STTInputAudio{
            Data: "UklGRiQA...",
            Format: "wav",
        },
        Language: openrouter.Pointer("en"),
        Model: "openai/whisper-large-v3",
    })
    if err != nil {
        log.Fatal(err)
    }
    if res != nil {
        // handle response
    }
}
```

### Parameters

| Parameter | Type                                                            | Required             | Description                                |
| --------- | --------------------------------------------------------------- | -------------------- | ------------------------------------------ |
| `ctx`     | [context.Context](https://pkg.go.dev/context#Context)           | :heavy\_check\_mark: | The context to use for the request.        |
| `request` | [components.STTRequest](../../models/components/sttrequest.mdx) | :heavy\_check\_mark: | The request object to use for the request. |
| `opts`    | \[][operations.Option](../../models/operations/option.mdx)      | :heavy\_minus\_sign: | The options for this request.              |

### Response

**[\*components.STTResponse](../../models/components/sttresponse.mdx), error**

### Errors

| Error Type                                | Status Code | Content Type     |
| ----------------------------------------- | ----------- | ---------------- |
| sdkerrors.BadRequestResponseError         | 400         | application/json |
| sdkerrors.UnauthorizedResponseError       | 401         | application/json |
| sdkerrors.PaymentRequiredResponseError    | 402         | application/json |
| sdkerrors.ForbiddenResponseError          | 403         | application/json |
| sdkerrors.NotFoundResponseError           | 404         | application/json |
| sdkerrors.PayloadTooLargeResponseError    | 413         | application/json |
| sdkerrors.TooManyRequestsResponseError    | 429         | application/json |
| sdkerrors.InternalServerResponseError     | 500         | application/json |
| sdkerrors.BadGatewayResponseError         | 502         | application/json |
| sdkerrors.ServiceUnavailableResponseError | 503         | application/json |
| sdkerrors.EdgeNetworkTimeoutResponseError | 524         | application/json |
| sdkerrors.ProviderOverloadedResponseError | 529         | application/json |
| sdkerrors.APIError                        | 4XX, 5XX    | \*/\*            |

## CreateTranscriptionMultipart

Transcribes audio into text. Accepts base64-encoded audio input as JSON or an OpenAI-style multipart/form-data file upload, and returns the transcribed text.

### Example Usage

```go theme={null}
package main

import(
	"context"
	"os"
	openrouter "github.com/OpenRouterTeam/go-sdk"
	"github.com/OpenRouterTeam/go-sdk/models/operations"
	"log"
)

func main() {
    ctx := context.Background()

    s := openrouter.New(
        openrouter.WithSecurity(os.Getenv("OPENROUTER_API_KEY")),
    )

    example, fileErr := os.Open("example.file")
    if fileErr != nil {
        panic(fileErr)
    }

    res, err := s.STT.CreateTranscriptionMultipart(ctx, operations.CreateAudioTranscriptionsMultipartRequest{
        File: operations.CreateAudioTranscriptionsMultipartFile{
            FileName: "example.file",
            Content: example,
        },
        Language: openrouter.Pointer("en"),
        Model: "openai/whisper-large-v3",
    })
    if err != nil {
        log.Fatal(err)
    }
    if res != nil {
        // handle response
    }
}
```

### Parameters

| Parameter | Type                                                                                                                          | Required             | Description                                |
| --------- | ----------------------------------------------------------------------------------------------------------------------------- | -------------------- | ------------------------------------------ |
| `ctx`     | [context.Context](https://pkg.go.dev/context#Context)                                                                         | :heavy\_check\_mark: | The context to use for the request.        |
| `request` | [operations.CreateAudioTranscriptionsMultipartRequest](../../models/operations/createaudiotranscriptionsmultipartrequest.mdx) | :heavy\_check\_mark: | The request object to use for the request. |
| `opts`    | \[][operations.Option](../../models/operations/option.mdx)                                                                    | :heavy\_minus\_sign: | The options for this request.              |

### Response

**[\*components.STTResponse](../../models/components/sttresponse.mdx), error**

### Errors

| Error Type                                | Status Code | Content Type     |
| ----------------------------------------- | ----------- | ---------------- |
| sdkerrors.BadRequestResponseError         | 400         | application/json |
| sdkerrors.UnauthorizedResponseError       | 401         | application/json |
| sdkerrors.PaymentRequiredResponseError    | 402         | application/json |
| sdkerrors.ForbiddenResponseError          | 403         | application/json |
| sdkerrors.NotFoundResponseError           | 404         | application/json |
| sdkerrors.PayloadTooLargeResponseError    | 413         | application/json |
| sdkerrors.TooManyRequestsResponseError    | 429         | application/json |
| sdkerrors.InternalServerResponseError     | 500         | application/json |
| sdkerrors.BadGatewayResponseError         | 502         | application/json |
| sdkerrors.ServiceUnavailableResponseError | 503         | application/json |
| sdkerrors.EdgeNetworkTimeoutResponseError | 524         | application/json |
| sdkerrors.ProviderOverloadedResponseError | 529         | application/json |
| sdkerrors.APIError                        | 4XX, 5XX    | \*/\*            |