50 lines
2.3 KiB
Python
50 lines
2.3 KiB
Python
"""Add native vocabulary only to explicitly opted-in Gemini transcription calls."""
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import json
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from pathlib import Path
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VOCABULARY = Path('/etc/litellm/personal-vocabulary.json')
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def vocabulary(path=VOCABULARY):
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words = json.loads(path.read_text())
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if not isinstance(words, list) or not 1 <= len(words) <= 100:
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raise ValueError('Personal vocabulary must contain 1–100 terms')
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if any(not isinstance(word, str) or not word.strip() or len(word) > 100 for word in words):
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raise ValueError('Invalid personal vocabulary term')
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return list(dict.fromkeys(words))
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def install():
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from litellm.llms.gemini.audio_transcription.transformation import GeminiAudioTranscriptionConfig
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original = GeminiAudioTranscriptionConfig.transform_audio_transcription_request
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if getattr(original, '_personal_vocabulary_patch', False):
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return
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def transform(self, model, audio_file, optional_params, litellm_params):
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enabled = optional_params.get('personal_vocabulary') is True
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if not enabled:
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return original(self, model, audio_file, optional_params, litellm_params)
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if model.removeprefix('gemini/') != 'gemini-3.5-transcribe':
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raise ValueError('Personal vocabulary is restricted to Gemini 3.5 Transcribe')
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if optional_params.get('timestamp_granularities') or optional_params.get('response_format') not in (None, 'json', 'text'):
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raise ValueError('Personal dictation does not support timestamps or diarization')
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clean = {key: value for key, value in optional_params.items() if key != 'personal_vocabulary'}
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result = original(self, model, audio_file, clean, litellm_params)
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config = result.data.setdefault('generation_config', {}).setdefault('transcription_config', {})
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# Fail closed if a future LiteLLM version enables conflicting features by default.
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if config.get('mode'):
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raise ValueError('Unexpected Gemini transcription mode')
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config['custom_vocabulary'] = vocabulary()
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return result
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transform._personal_vocabulary_patch = True
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GeminiAudioTranscriptionConfig.transform_audio_transcription_request = transform
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if __name__ == '__main__':
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import sys
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from litellm import run_server
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install()
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sys.argv[0] = 'litellm'
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sys.exit(run_server())
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