Implement consistent Whisper task option for OpenAI and Azure bridges #350

Copilot · 2025-06-27T12:16:35Z

This PR addresses the inconsistency between OpenAI and Azure Whisper implementations by introducing a configurable task option that controls which endpoint is used.

Problem

Previously, the Whisper implementations were inconsistent:

OpenAI bridge: Hardcoded to use /audio/transcriptions endpoint
Azure bridge: Hardcoded to use /audio/translations endpoint

This made it impossible to use both transcription and translation features consistently across platforms.

Solution

Introduced a task option that allows users to specify whether they want transcription or translation:

use PhpLlm\LlmChain\Platform\Bridge\OpenAI\Whisper\Task;

// Default behavior (transcription)
$client->request($model, $payload);

// Explicit transcription
$client->request($model, $payload, ['task' => Task::TRANSCRIPTION]);

// Translation
$client->request($model, $payload, ['task' => Task::TRANSLATION]);

Changes Made

New Task Interface: Created PhpLlm\LlmChain\Platform\Bridge\OpenAI\Whisper\Task with constants:
- TRANSCRIPTION = 'transcription'
- TRANSLATION = 'translation'
Enhanced OpenAI ModelClient:
- Extracts task from options
- Dynamically constructs endpoint URL based on task
- Maintains backward compatibility (defaults to transcription)
Enhanced Azure WhisperModelClient:
- Extracts task from options
- Dynamically constructs endpoint URL based on task
- Breaking Change: Now defaults to transcription for consistency
Comprehensive Tests: Added test coverage for both implementations covering all scenarios

Breaking Change

⚠️ Azure Whisper behavior change: Previously, Azure Whisper always used the /translations endpoint. Now it defaults to /transcriptions for consistency with OpenAI.

Migration: If you were relying on Azure Whisper's translation behavior, explicitly specify the task:

$options = ['task' => Task::TRANSLATION];
$response = $azureClient->request($model, $payload, $options);

Backward Compatibility

OpenAI: Fully backward compatible (still defaults to transcription)
Azure: Breaking change documented above, but provides path forward

Both implementations now behave consistently and support both transcription and translation endpoints.

Fixes #349.

Warning

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Co-authored-by: chr-hertel <[email protected]>

src/Platform/Bridge/OpenAI/Whisper/Task.php

src/Platform/Bridge/Azure/OpenAI/WhisperModelClient.php

src/Platform/Bridge/OpenAI/Whisper/ModelClient.php

Co-authored-by: chr-hertel <[email protected]>

OskarStark · 2025-06-27T21:47:10Z

LGTM 👍 thanks @copilot 😄

…ges (#350) (Copilot) This PR was merged into the main branch. Discussion ---------- fix: consistent Whisper task option for OpenAI and Azure bridges (#350) | Q | A | ------------- | --- | Bug fix? | yes | New feature? | no | Docs? | no | Issues | | License | MIT Cherry picking php-llm/llm-chain#350 Commits ------- 5d66c61 fix: consistent Whisper task option for OpenAI and Azure bridges (#350)

…ges (#350) (Copilot) This PR was merged into the main branch. Discussion ---------- fix: consistent Whisper task option for OpenAI and Azure bridges (#350) | Q | A | ------------- | --- | Bug fix? | yes | New feature? | no | Docs? | no | Issues | | License | MIT Cherry picking php-llm/llm-chain#350 Commits ------- 5d66c61 fix: consistent Whisper task option for OpenAI and Azure bridges (#350)

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Implement consistent Whisper task option for OpenAI and Azure bridges

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Co-authored-by: chr-hertel <[email protected]>

Copilot AI changed the title ~~[WIP] Inconsistent and missing Whisper capabilities~~ Implement consistent Whisper task option for OpenAI and Azure bridges Jun 27, 2025

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Add documentation comment about Azure Whisper behavior change

bf6653b

Co-authored-by: chr-hertel <[email protected]>

chr-hertel force-pushed the copilot/fix-349 branch from e627a0b to bf6653b Compare June 27, 2025 21:43

chr-hertel marked this pull request as ready for review June 27, 2025 21:44

chr-hertel merged commit 97982eb into main Jun 27, 2025
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chr-hertel mentioned this pull request Jun 30, 2025

fix: consistent Whisper task option for OpenAI and Azure bridges symfony/ai#49

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Implement consistent Whisper task option for OpenAI and Azure bridges #350

Implement consistent Whisper task option for OpenAI and Azure bridges #350

Copilot AI commented Jun 27, 2025 •

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Implement consistent Whisper task option for OpenAI and Azure bridges #350

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