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This makes it easier to pass through requests to the LLM APIs.
E.g. Route to VLLM's `/classify` endpoint:
## SDK (Basic)
```python
import litellm
response = litellm.llm_passthrough_route(
model="hosted_vllm/papluca/xlm-roberta-base-language-detection",
method="POST",
endpoint="classify",
api_base="http://localhost:8090",
api_key=None,
json={
"model": "swapped-for-litellm-model",
"input": "Hello, world!",
}
)
print(response)
```
## SDK (Router)
```python
import asyncio
from litellm import Router
router = Router(
model_list=[
{
"model_name": "roberta-base-language-detection",
"litellm_params": {
"model": "hosted_vllm/papluca/xlm-roberta-base-language-detection",
"api_base": "http://localhost:8090",
}
}
]
)
request_data = {
"model": "roberta-base-language-detection",
"method": "POST",
"endpoint": "classify",
"api_base": "http://localhost:8090",
"api_key": None,
"json": {
"model": "roberta-base-language-detection",
"input": "Hello, world!",
}
}
async def main():
response = await router.allm_passthrough_route(**request_data)
print(response)
if __name__ == "__main__":
asyncio.run(main())
```
## PROXY
1. Setup config.yaml
```yaml
model_list:
- model_name: roberta-base-language-detection
litellm_params:
model: hosted_vllm/papluca/xlm-roberta-base-language-detection
api_base: http://localhost:8090
```
2. Run the proxy
```bash
litellm proxy --config config.yaml
# RUNNING on http://localhost:4000
```
3. Use the proxy
```bash
curl -X POST http://localhost:4000/vllm/classify \
-H "Content-Type: application/json" \
-H "Authorization: Bearer <your-api-key>" \
-d '{"model": "roberta-base-language-detection", "input": "Hello, world!"}' \
```
# How to add a provider for passthrough
See [VLLMModelInfo](https://github.com/BerriAI/litellm/blob/main/litellm/llms/vllm/common_utils.py) for an example.
1. Inherit from BaseModelInfo
```python
from litellm.llms.base_llm.base_utils import BaseLLMModelInfo
class VLLMModelInfo(BaseLLMModelInfo):
pass
```
2. Register the provider in the ProviderConfigManager.get_provider_model_info
```python
from litellm.utils import ProviderConfigManager
from litellm.types.utils import LlmProviders
provider_config = ProviderConfigManager.get_provider_model_info(
model="my-test-model", provider=LlmProviders.VLLM
)
print(provider_config)
``` |