使用视觉模型

快速入门

将图像传递给模型的示例

LiteLLMPython SDK

import os 
from litellm import completion

os.environ["OPENAI_API_KEY"] = "your-api-key"

# openai call
response = completion(
    model = "gpt-4-vision-preview", 
    messages=[
        {
            "role": "user",
            "content": [
                            {
                                "type": "text",
                                "text": "What’s in this image?"
                            },
                            {
                                "type": "image_url",
                                "image_url": {
                                "url": "https://upload.wikimedia.org/wikipedia/commons/thumb/d/dd/Gfp-wisconsin-madison-the-nature-boardwalk.jpg/2560px-Gfp-wisconsin-madison-the-nature-boardwalk.jpg"
                                }
                            }
                        ]
        }
    ],
)

LiteLLM 代理服务器

1. 在 config.yaml 中定义视觉模型

model_list:
  - model_name: gpt-4-vision-preview # OpenAI gpt-4-vision-preview
    litellm_params:
      model: openai/gpt-4-vision-preview
      api_key: os.environ/OPENAI_API_KEY
  - model_name: llava-hf          # Custom OpenAI compatible model
    litellm_params:
      model: openai/llava-hf/llava-v1.6-vicuna-7b-hf
      api_base: http://localhost:8000
      api_key: fake-key
    model_info:
      supports_vision: True        # set supports_vision to True so /model/info returns this attribute as True

2. 运行代理服务器

litellm --config config.yaml

3. 使用 OpenAI Python SDK 进行测试

import os 
from openai import OpenAI

client = OpenAI(
    api_key="sk-1234", # your litellm proxy api key
)

response = client.chat.completions.create(
    model = "gpt-4-vision-preview",  # use model="llava-hf" to test your custom OpenAI endpoint
    messages=[
        {
            "role": "user",
            "content": [
                            {
                                "type": "text",
                                "text": "What’s in this image?"
                            },
                            {
                                "type": "image_url",
                                "image_url": {
                                "url": "https://upload.wikimedia.org/wikipedia/commons/thumb/d/dd/Gfp-wisconsin-madison-the-nature-boardwalk.jpg/2560px-Gfp-wisconsin-madison-the-nature-boardwalk.jpg"
                                }
                            }
                        ]
        }
    ],
)

检查模型是否支持 vision

LiteLLM Python SDK

使用 litellm.supports_vision(model="") -> 如果模型支持 vision 则返回 True，否则返回 False

assert litellm.supports_vision(model="openai/gpt-4-vision-preview") == True
assert litellm.supports_vision(model="vertex_ai/gemini-1.0-pro-vision") == True
assert litellm.supports_vision(model="openai/gpt-3.5-turbo") == False
assert litellm.supports_vision(model="xai/grok-2-vision-latest") == True
assert litellm.supports_vision(model="xai/grok-2-latest") == False

LiteLLM 代理服务器

1. 在 config.yaml 中定义视觉模型

model_list:
  - model_name: gpt-4-vision-preview # OpenAI gpt-4-vision-preview
    litellm_params:
      model: openai/gpt-4-vision-preview
      api_key: os.environ/OPENAI_API_KEY
  - model_name: llava-hf          # Custom OpenAI compatible model
    litellm_params:
      model: openai/llava-hf/llava-v1.6-vicuna-7b-hf
      api_base: http://localhost:8000
      api_key: fake-key
    model_info:
      supports_vision: True        # set supports_vision to True so /model/info returns this attribute as True

2. 运行代理服务器

litellm --config config.yaml

3. 调用 /model_group/info 检查您的模型是否支持 vision

curl -X 'GET' \
  'http://localhost:4000/model_group/info' \
  -H 'accept: application/json' \
  -H 'x-api-key: sk-1234'

预期响应

{
  "data": [
    {
      "model_group": "gpt-4-vision-preview",
      "providers": ["openai"],
      "max_input_tokens": 128000,
      "max_output_tokens": 4096,
      "mode": "chat",
      "supports_vision": true, # 👈 supports_vision is true
      "supports_function_calling": false
    },
    {
      "model_group": "llava-hf",
      "providers": ["openai"],
      "max_input_tokens": null,
      "max_output_tokens": null,
      "mode": null,
      "supports_vision": true, # 👈 supports_vision is true
      "supports_function_calling": false
    }
  ]
}

明确指定图像类型

如果您的图像没有 mime-type，或者 litellm 错误地推断了您的图像 mime-type (例如，在使用 vertex ai 调用 gs:// URL 时)，您可以通过 format 参数明确设置。

"image_url": {
  "url": "gs://my-gs-image",
  "format": "image/jpeg"
}

LiteLLM 将在支持指定 mime-type 的任何 API 端点 (例如 anthropic/bedrock/vertex ai) 上使用此设置。

对于其他 (例如 openai)，此设置将被忽略。

SDK

import os 
from litellm import completion

os.environ["ANTHROPIC_API_KEY"] = "your-api-key"

# openai call
response = completion(
    model = "claude-3-7-sonnet-latest", 
    messages=[
        {
            "role": "user",
            "content": [
                            {
                                "type": "text",
                                "text": "What’s in this image?"
                            },
                            {
                                "type": "image_url",
                                "image_url": {
                                  "url": "https://upload.wikimedia.org/wikipedia/commons/thumb/d/dd/Gfp-wisconsin-madison-the-nature-boardwalk.jpg/2560px-Gfp-wisconsin-madison-the-nature-boardwalk.jpg",
                                  "format": "image/jpeg"
                                }
                            }
                        ]
        }
    ],
)

PROXY

1. 在 config.yaml 中定义视觉模型

model_list:
  - model_name: gpt-4-vision-preview # OpenAI gpt-4-vision-preview
    litellm_params:
      model: openai/gpt-4-vision-preview
      api_key: os.environ/OPENAI_API_KEY
  - model_name: llava-hf          # Custom OpenAI compatible model
    litellm_params:
      model: openai/llava-hf/llava-v1.6-vicuna-7b-hf
      api_base: http://localhost:8000
      api_key: fake-key
    model_info:
      supports_vision: True        # set supports_vision to True so /model/info returns this attribute as True

2. 运行代理服务器

litellm --config config.yaml

3. 使用 OpenAI Python SDK 进行测试

import os 
from openai import OpenAI

client = OpenAI(
    api_key="sk-1234", # your litellm proxy api key
)

response = client.chat.completions.create(
    model = "gpt-4-vision-preview",  # use model="llava-hf" to test your custom OpenAI endpoint
    messages=[
        {
            "role": "user",
            "content": [
                            {
                                "type": "text",
                                "text": "What’s in this image?"
                            },
                            {
                                "type": "image_url",
                                "image_url": {
                                "url": "https://upload.wikimedia.org/wikipedia/commons/thumb/d/dd/Gfp-wisconsin-madison-the-nature-boardwalk.jpg/2560px-Gfp-wisconsin-madison-the-nature-boardwalk.jpg",
                                "format": "image/jpeg"
                                }
                            }
                        ]
        }
    ],
)

规范

"image_url": str

OR 

"image_url": {
  "url": "url OR base64 encoded str",
  "detail": "openai-only param", 
  "format": "specify mime-type of image"
}