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from typing import List, Dict, Generator, Optional |
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from hf_client import get_inference_client |
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def chat_completion( |
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model_id: str, |
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messages: List[Dict[str, str]], |
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provider: Optional[str] = None, |
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max_tokens: int = 4096 |
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) -> str: |
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""" |
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Send a chat completion request to the appropriate inference provider. |
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Args: |
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model_id: The model identifier to use. |
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messages: A list of OpenAI‑style {'role':'...', 'content':'...'} messages. |
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provider: Optional override for provider; uses model default if None. |
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max_tokens: Maximum tokens to generate. |
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Returns: |
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The assistant's response content. |
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""" |
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client = get_inference_client(model_id, provider or "auto") |
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response = client.chat.completions.create( |
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model=model_id, |
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messages=messages, |
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max_tokens=max_tokens |
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) |
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return response.choices[0].message.content |
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def stream_chat_completion( |
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model_id: str, |
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messages: List[Dict[str, str]], |
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provider: Optional[str] = None, |
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max_tokens: int = 4096 |
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) -> Generator[str, None, None]: |
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""" |
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Generator for streaming chat completions. |
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Yields partial message chunks as strings. |
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""" |
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client = get_inference_client(model_id, provider or "auto") |
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stream = client.chat.completions.create( |
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model=model_id, |
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messages=messages, |
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max_tokens=max_tokens, |
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stream=True |
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) |
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for chunk in stream: |
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delta = getattr(chunk.choices[0].delta, "content", None) |
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if delta: |
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yield delta |
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