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209 | class Upstage(OpenAI):
"""Upstage LLM.
Examples:
`pip install llama-index-llms-upstage`
```python
from llama_index.llms.upstage import Upstage
import os
os.environ["UPSTAGE_API_KEY"] = "YOUR_API_KEY"
llm = Upstage()
stream = llm.stream("Hello, how are you?")
for response in stream:
print(response.delta, end="")
```
"""
model_config = ConfigDict(arbitrary_types_allowed=True, populate_by_name=True)
model: str = Field(
default=DEFAULT_UPSTAGE_MODEL, description="The Upstage model to use."
)
temperature: float = Field(
default=DEFAULT_TEMPERATURE,
description="The temperature to use during generation.",
gte=0.0,
lte=1.0,
)
max_tokens: Optional[int] = Field(
description="The maximum number of tokens to generate."
)
logprobs: Optional[bool] = Field(
description="Whether to return logprobs per token."
)
top_logprobs: int = Field(
description="The number of top token logprobs to return.",
default=0,
gte=0,
lte=20,
)
additional_kwargs: Dict[str, Any] = Field(
description="Additional kwargs for the Upstage API.", default_factory=dict
)
max_retries: int = Field(
description="The maximum number of API retries.", default=3, gte=0
)
timeout: float = Field(
description="The timeout, in seconds, for API requests.", default=60.0, gte=0.0
)
reuse_client: bool = Field(
description=(
"Reuse the OpenAI client between requests. When doing anything with large "
"volumes of async API calls, setting this to false can improve stability."
),
default=True,
)
tokenizer_name: str = Field(
description=(
"Huggingface pretrained tokenizer name "
"upstage opened solar tokenizer in Huggingface. https://huggingface.co/upstage/solar-1-mini-tokenizer"
),
default="upstage/solar-1-mini-tokenizer",
)
api_key: str = Field(
default=None, alias="upstage_api_key", description="The Upstage API key."
)
api_base: str = Field(
default="https://api.upstage.ai/v1/solar",
description="The Upstage API base URL.",
)
_client: Optional[SyncOpenAI] = PrivateAttr()
_aclient: Optional[AsyncOpenAI] = PrivateAttr()
_http_client: Optional[httpx.Client] = PrivateAttr()
def __init__(
self,
model: str = DEFAULT_UPSTAGE_MODEL,
temperature: float = DEFAULT_TEMPERATURE,
max_tokens: Optional[int] = None,
logprobs: Optional[bool] = None,
top_logprobs: int = 0,
additional_kwargs: Dict[str, Any] = None,
max_retries: int = 3,
timeout: float = 60.0,
reuse_client: bool = True,
tokenizer_name: str = "upstage/solar-1-mini-tokenizer",
api_key: Optional[str] = None,
api_base: Optional[str] = None,
callback_manager: Optional[CallbackManager] = None,
default_headers: Optional[Dict[str, str]] = None,
http_client: Optional[httpx.Client] = None, # from base class
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,
**kwargs: Any
) -> None:
if "upstage_api_key" in kwargs:
api_key = kwargs.pop("upstage_api_key")
additional_kwargs = additional_kwargs or {}
api_key, api_base = resolve_upstage_credentials(
api_key=api_key, api_base=api_base
)
super().__init__(
model=model,
temperature=temperature,
max_tokens=max_tokens,
logprobs=logprobs,
top_logprobs=top_logprobs,
additional_kwargs=additional_kwargs,
max_retries=max_retries,
timeout=timeout,
reuse_client=reuse_client,
api_key=api_key,
api_base=api_base,
callback_manager=callback_manager,
default_headers=default_headers,
http_client=http_client,
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,
**kwargs
)
self.tokenizer_name = tokenizer_name
self._client = None
self._aclient = None
self._http_client = http_client
def _get_model_name(self) -> str:
return self.model
@classmethod
def class_name(cls) -> str:
return "upstage_llm"
@property
def metadata(self) -> LLMMetadata:
return LLMMetadata(
context_window=upstage_modelname_to_contextsize(
modelname=self._get_model_name()
),
num_output=self.max_tokens or -1,
is_chat_model=is_chat_model(model=self._get_model_name()),
is_function_calling_model=is_function_calling_model(
model=self._get_model_name()
),
model_name=self.model,
)
@property
def _tokenizer(self) -> Optional[Tokenizer]:
"""
Get a Huggingface tokenizer for solar models.
"""
return Tokenizer.from_pretrained(self.tokenizer_name)
def get_num_tokens_from_message(self, messages: Sequence[ChatMessage]) -> int:
tokens_per_message = 5 # <|im_start|>{role}\n{message}<|im_end|>
tokens_prefix = 1 # <|startoftext|>
tokens_suffix = 3 # <|im_start|>assistant\n
num_tokens = 0
num_tokens += tokens_prefix
message_dicts = to_openai_message_dicts(messages)
for message in message_dicts:
num_tokens += tokens_per_message
for value in message.values():
num_tokens += len(
self._tokenizer.encode(str(value), add_special_tokens=False)
)
num_tokens += tokens_suffix
return num_tokens
|