sweep: STT model name is not used when calling the OpenAI API

[bannert1337]

Default value for model is whisper-1. I changed it to distil-large-v3. The API call fails and the log shows that model whisper-1 was requested, even though I defined another value.

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Step 1: 🔎 Searching

(Click to expand) Here are the code search results. I'm now analyzing these search results to write the PR.

https://github.com/bannert1337/open-webui/blob/a8d80f936a69c7e4254c2306b9c88aa7c3e09088/backend/apps/audio/main.py#L1-L225 https://github.com/bannert1337/open-webui/blob/a8d80f936a69c7e4254c2306b9c88aa7c3e09088/src/lib/apis/openai/index.ts#L1-L454 https://github.com/bannert1337/open-webui/blob/a8d80f936a69c7e4254c2306b9c88aa7c3e09088/src/lib/components/chat/Settings/Audio.svelte#L1-L377

Step 2: ⌨️ Coding

I'm going to follow the following steps to help you solve the GitHub issue:

1. Add a new parameter to the transcribe function in backend/apps/audio/main.py to accept the STT model name.
2. Update the STTEngine setting in src/lib/components/chat/Settings/Audio.svelte to allow specifying the STT model name.
3. Pass the user-specified STT model name from the frontend to the backend when calling the transcribe API endpoint.

Here are the changes we decided to make. I'm done making edits and now I'm just validating the changes using a linter to catch any mistakes like syntax errors or undefined variables:

backend/apps/audio/main.py

Update the `transcribe` function to accept the STT model name as a parameter.

--- 
+++ 
@@ -1,6 +1,7 @@
 @app.post("/transcriptions")
 def transcribe(
     file: UploadFile = File(...),
+    model: str = Form(...),
     user=Depends(get_current_user),
 ):
     log.info(f"file.content_type: {file.content_type}")
@@ -20,7 +21,7 @@
             f.close()

         whisper_kwargs = {
-            "model_size_or_path": WHISPER_MODEL,
+            "model_size_or_path": model,
             "device": whisper_device_type,
             "compute_type": "int8",
             "download_root": WHISPER_MODEL_DIR,

src/lib/components/chat/Settings/Audio.svelte

Add a new variable to store the STT model name and update the "Speech-to-Text Engine" setting to allow specifying the model name.

--- 
+++ 
@@ -16,8 +16,9 @@
    let OpenAIKey = '';
    let OpenAISpeaker = '';

-   let STTEngines = ['', 'openai'];
+   let STTEngines = ['', 'openai', 'whisper-openai'];
    let STTEngine = '';
+   let STTModel = '';

    let conversationMode = false;
    let speechAutoSend = false;

src/lib/components/chat/Settings/Audio.svelte

Rewritten instructions to resolve the error. Update the original_code and new_code blocks as required, ensuring that the

--- 
+++ 
@@ -1,4 +1,4 @@
-           <div class=" py-0.5 flex w-full justify-between">
+           <div class=" py-0.5 flex w/full justify-between">
                <div class=" self-center text-xs font-medium">{$i18n.t('Speech-to-Text Engine')}</div>
                <div class="flex items-center relative">
                    <select
@@ -20,6 +20,21 @@
                    >
                        <option value="">{$i18n.t('Default (Web API)')}</option>
                        <option value="whisper-local">{$i18n.t('Whisper (Local)')}</option>
+                       <option value="whisper-openai">{$i18n.t('Whisper (OpenAI)')}</option>
                    </select>
                </div>
-           </div>
+           </div>
+
+           {#if STTEngine === 'whisper-openai'}
+               <div class=" py-0.5 flex w-full justify-between">
+                   <div class=" self-center text-xs font-medium">{$i18n.t('STT Model Name')}</div>
+                   <div class="flex items-center relative">
+                       <input
+                           class="dark:bg-gray-900 w-full rounded px-2 p-1 text-xs bg-transparent outline-none"
+                           bind:value={STTModel}
+                           placeholder="Enter STT model name"
+                           required
+                       />
+                   </div>
+               </div>
+           {/if}

src/lib/components/chat/Settings/Audio.svelte

Update the `saveSettings` function call to include the STT model name setting.

--- 
+++ 
@@ -7,6 +7,7 @@
        saveSettings({
            audio: {
                STTEngine: STTEngine !== '' ? STTEngine : undefined,
+               STTModel: STTModel !== '' ? STTModel : undefined,
                TTSEngine: TTSEngine !== '' ? TTSEngine : undefined,
                speaker:
                    (TTSEngine === 'openai' ? OpenAISpeaker : speaker) !== ''

src/lib/apis/openai/index.ts

Update the `transcribe` function to accept the STT model name and pass it to the backend API.

--- 
+++ 
@@ -1,3 +1,38 @@
+export const transcribe = async (
+   token: string = '',
+   file: File,
+   model: string = 'whisper-1'
+) => {
+   let error = null;
+
+   const formData = new FormData();
+   formData.append('file', file);
+   formData.append('model', model);
+
+   const res = await fetch(`${OPENAI_API_BASE_URL}/transcriptions`, {
+       method: 'POST',
+       headers: {
+           Authorization: `Bearer ${token}`
+       },
+       body: formData
+   })
+       .then(async (res) => {
+           if (!res.ok) throw await res.json();
+           return res.json();
+       })
+       .catch((err) => {
+           console.log(err);
+           error = err;
+           return null;
+       });
+
+   if (error) {
+       throw error;
+   }
+
+   return res;
+};
+
 export const generateSearchQuery = async (
    token: string = '',
    model: string,

Step 3: 🔄️ Validating

Your changes have been successfully made to the branch sweep/stt_model_name_is_not_used_when_calling. I have validated these changes using a syntax checker and a linter.

---

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