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141 | class LlamaAPI(CustomLLM):
"""LlamaAPI LLM.
Examples:
`pip install llama-index-llms-llama-api`
```python
from llama_index.llms.llama_api import LlamaAPI
# Obtain an API key from https://www.llama-api.com/
api_key = "your-api-key"
llm = LlamaAPI(api_key=api_key)
# Call the complete method with a prompt
resp = llm.complete("Paul Graham is ")
print(resp)
```
"""
model: str = Field(description="The llama-api model to use.")
temperature: float = Field(description="The temperature to use for sampling.")
max_tokens: int = Field(description="The maximum number of tokens to generate.")
additional_kwargs: Dict[str, Any] = Field(
default_factory=dict, description="Additional kwargs for the llama-api API."
)
_client: Any = PrivateAttr()
def __init__(
self,
model: str = "llama-13b-chat",
temperature: float = 0.1,
max_tokens: int = DEFAULT_NUM_OUTPUTS,
additional_kwargs: Optional[Dict[str, Any]] = None,
api_key: Optional[str] = None,
callback_manager: Optional[CallbackManager] = None,
system_prompt: Optional[str] = None,
messages_to_prompt: Optional[Callable[[Sequence[ChatMessage]], str]] = None,
completion_to_prompt: Optional[Callable[[str], str]] = None,
pydantic_program_mode: PydanticProgramMode = PydanticProgramMode.DEFAULT,
output_parser: Optional[BaseOutputParser] = None,
) -> None:
self._client = Client(api_key)
super().__init__(
model=model,
temperature=temperature,
max_tokens=max_tokens,
additional_kwargs=additional_kwargs or {},
callback_manager=callback_manager,
system_prompt=system_prompt,
messages_to_prompt=messages_to_prompt,
completion_to_prompt=completion_to_prompt,
pydantic_program_mode=pydantic_program_mode,
output_parser=output_parser,
)
@classmethod
def class_name(cls) -> str:
return "llama_api_llm"
@property
def _model_kwargs(self) -> Dict[str, Any]:
base_kwargs = {
"model": self.model,
"temperature": self.temperature,
"max_length": self.max_tokens,
}
return {
**base_kwargs,
**self.additional_kwargs,
}
@property
def metadata(self) -> LLMMetadata:
return LLMMetadata(
context_window=4096,
num_output=DEFAULT_NUM_OUTPUTS,
is_chat_model=True,
is_function_calling_model=True,
model_name="llama-api",
)
@llm_chat_callback()
def chat(self, messages: Sequence[ChatMessage], **kwargs: Any) -> ChatResponse:
message_dicts = to_openai_message_dicts(messages)
json_dict = {
"messages": message_dicts,
**self._model_kwargs,
**kwargs,
}
response = self._client.run(json_dict).json()
message_dict = response["choices"][0]["message"]
message = from_openai_message_dict(message_dict)
return ChatResponse(message=message, raw=response)
@llm_completion_callback()
def complete(
self, prompt: str, formatted: bool = False, **kwargs: Any
) -> CompletionResponse:
complete_fn = chat_to_completion_decorator(self.chat)
return complete_fn(prompt, **kwargs)
@llm_completion_callback()
def stream_complete(
self, prompt: str, formatted: bool = False, **kwargs: Any
) -> CompletionResponseGen:
raise NotImplementedError("stream_complete is not supported for LlamaAPI")
@llm_chat_callback()
def stream_chat(
self, messages: Sequence[ChatMessage], **kwargs: Any
) -> ChatResponseGen:
raise NotImplementedError("stream_chat is not supported for LlamaAPI")
|