使用 PDF 輸入

如何將 pdf（其他文件類型）傳送／接收至 /chat/completions 端點

適用於：

• Vertex AI 模型（Gemini + Anthropic）
• Bedrock 模型
• Anthropic API 模型
• OpenAI API 模型
• Mistral（僅使用已上傳檔案的 file ID，類似於 OpenAI file_id 輸入）

快速開始

URL

SDK

from litellm.utils import supports_pdf_input, completion

# set aws credentials
os.environ["AWS_ACCESS_KEY_ID"] = ""
os.environ["AWS_SECRET_ACCESS_KEY"] = ""
os.environ["AWS_REGION_NAME"] = ""


# pdf url
file_url = "https://www.w3.org/WAI/ER/tests/xhtml/testfiles/resources/pdf/dummy.pdf"

# model
model = "bedrock/us.anthropic.claude-haiku-4-5-20251001-v1:0"

file_content = [
    {"type": "text", "text": "What's this file about?"},
    {
        "type": "file",
        "file": {
            "file_id": file_url,
        }
    },
]


if not supports_pdf_input(model, None):
    print("Model does not support image input")

response = completion(
    model=model,
    messages=[{"role": "user", "content": file_content}],
)
assert response is not None

PROXY

1. 設定 config.yaml

model_list:
  - model_name: bedrock-model
    litellm_params:
      model: bedrock/us.anthropic.claude-haiku-4-5-20251001-v1:0
      aws_access_key_id: os.environ/AWS_ACCESS_KEY_ID
      aws_secret_access_key: os.environ/AWS_SECRET_ACCESS_KEY
      aws_region_name: os.environ/AWS_REGION_NAME

2. 啟動 proxy

litellm --config /path/to/config.yaml

3. 測試它！

curl -X POST 'http://0.0.0.0:4000/chat/completions' \
-H 'Content-Type: application/json' \
-H 'Authorization: Bearer sk-1234' \
-d '{
    "model": "bedrock-model",
    "messages": [
        {"role": "user", "content": [
            {"type": "text", "text": "What's this file about?"},
            {
                "type": "file",
                "file": {
                    "file_id": "https://www.w3.org/WAI/ER/tests/xhtml/testfiles/resources/pdf/dummy.pdf",
                }
            }
        ]},
    ]
}'

base64

SDK

from litellm.utils import supports_pdf_input, completion

# set aws credentials
os.environ["AWS_ACCESS_KEY_ID"] = ""
os.environ["AWS_SECRET_ACCESS_KEY"] = ""
os.environ["AWS_REGION_NAME"] = ""


# pdf url
image_url = "https://www.w3.org/WAI/ER/tests/xhtml/testfiles/resources/pdf/dummy.pdf"
response = requests.get(url)
file_data = response.content

encoded_file = base64.b64encode(file_data).decode("utf-8")
base64_url = f"data:application/pdf;base64,{encoded_file}"

# model
model = "bedrock/us.anthropic.claude-haiku-4-5-20251001-v1:0"

file_content = [
    {"type": "text", "text": "What's this file about?"},
    {
        "type": "file",
        "file": {
            "file_data": base64_url,
        }
    },
]


if not supports_pdf_input(model, None):
    print("Model does not support image input")

response = completion(
    model=model,
    messages=[{"role": "user", "content": file_content}],
)
assert response is not None

PROXY

1. 設定 config.yaml

model_list:
  - model_name: bedrock-model
    litellm_params:
      model: bedrock/us.anthropic.claude-haiku-4-5-20251001-v1:0
      aws_access_key_id: os.environ/AWS_ACCESS_KEY_ID
      aws_secret_access_key: os.environ/AWS_SECRET_ACCESS_KEY
      aws_region_name: os.environ/AWS_REGION_NAME

2. 啟動 proxy

litellm --config /path/to/config.yaml

3. 測試它！

curl -X POST 'http://0.0.0.0:4000/chat/completions' \
-H 'Content-Type: application/json' \
-H 'Authorization: Bearer sk-1234' \
-d '{
    "model": "bedrock-model",
    "messages": [
        {"role": "user", "content": [
            {"type": "text", "text": "What's this file about?"},
            {
                "type": "file",
                "file": {
                    "file_data": "data:application/pdf;base64...",
                }
            }
        ]},
    ]
}'

指定格式

若要指定文件的格式，您可以使用 format 參數。

SDK

from litellm.utils import supports_pdf_input, completion

# set aws credentials
os.environ["AWS_ACCESS_KEY_ID"] = ""
os.environ["AWS_SECRET_ACCESS_KEY"] = ""
os.environ["AWS_REGION_NAME"] = ""


# pdf url
file_url = "https://www.w3.org/WAI/ER/tests/xhtml/testfiles/resources/pdf/dummy.pdf"

# model
model = "bedrock/us.anthropic.claude-haiku-4-5-20251001-v1:0"

file_content = [
    {"type": "text", "text": "What's this file about?"},
    {
        "type": "file",
        "file": {
            "file_id": file_url,
            "format": "application/pdf",
        }
    },
]


if not supports_pdf_input(model, None):
    print("Model does not support image input")

response = completion(
    model=model,
    messages=[{"role": "user", "content": file_content}],
)
assert response is not None

PROXY

1. 設定 config.yaml

model_list:
  - model_name: bedrock-model
    litellm_params:
      model: bedrock/us.anthropic.claude-haiku-4-5-20251001-v1:0
      aws_access_key_id: os.environ/AWS_ACCESS_KEY_ID
      aws_secret_access_key: os.environ/AWS_SECRET_ACCESS_KEY
      aws_region_name: os.environ/AWS_REGION_NAME

2. 啟動 proxy

litellm --config /path/to/config.yaml

3. 測試它！

curl -X POST 'http://0.0.0.0:4000/chat/completions' \
-H 'Content-Type: application/json' \
-H 'Authorization: Bearer sk-1234' \
-d '{
    "model": "bedrock-model",
    "messages": [
        {"role": "user", "content": [
            {"type": "text", "text": "What's this file about?"},
            {
                "type": "file",
                "file": {
                    "file_id": "https://www.w3.org/WAI/ER/tests/xhtml/testfiles/resources/pdf/dummy.pdf",
                    "format": "application/pdf",
                }
            }
        ]},
    ]
}'

Mistral 範例

以下是使用 Mistral 模型進行文件理解的範例 payload：

SDK

from litellm.utils import completion

# pdf file_id received from files endpoint
file_id = "fa778e5e-46ec-4562-8418-36623fe25a71"

# model
model = "mistral/mistral-large-latest"

file_content = [
    {"type": "text", "text": "What's this file about?"},
    {
        "type": "file",
        "file": {
            "file_id": file_id,
        }
    },
]

response = completion(
    model=model,
    messages=[{"role": "user", "content": file_content}],
)
assert response is not None

PROXY

curl -X POST 'http://0.0.0.0:4000/chat/completions' \
-H 'Content-Type: application/json' \
-H 'Authorization: Bearer sk-1234' \
-d '{
    "model": "mistral/mistral-large-latest",
    "messages": [
        {
            "role": "user",
            "content": [
                {
                    "type": "text",
                    "text": "What is the content of the file?"
                },
                {
                    "type": "file",
                    "file": {
                        "file_id": "fa778e5e-46ec-4562-8418-36623fe25a71"
                    }
                }
            ]
        }
    ]
}

檢查模型是否支援 pdf 輸入

SDK

使用 litellm.supports_pdf_input(model="bedrock/us.anthropic.claude-haiku-4-5-20251001-v1:0") -> 若模型可接受 pdf 輸入，則回傳 True

assert litellm.supports_pdf_input(model="bedrock/us.anthropic.claude-haiku-4-5-20251001-v1:0") == True

PROXY

1. 在 config.yaml 中定義 bedrock 模型

model_list:
  - model_name: bedrock-model # model group name
    litellm_params:
      model: bedrock/us.anthropic.claude-haiku-4-5-20251001-v1:0
      aws_access_key_id: os.environ/AWS_ACCESS_KEY_ID
      aws_secret_access_key: os.environ/AWS_SECRET_ACCESS_KEY
      aws_region_name: os.environ/AWS_REGION_NAME
    model_info: # OPTIONAL - set manually
      supports_pdf_input: True

2. 執行 proxy 伺服器

litellm --config config.yaml

3. 呼叫 /model_group/info 以檢查模型是否支援 pdf 輸入

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

預期回應

{
  "data": [
    {
      "model_group": "bedrock-model",
      "providers": ["bedrock"],
      "max_input_tokens": 128000,
      "max_output_tokens": 16384,
      "mode": "chat",
      ...,
      "supports_pdf_input": true, # 👈 supports_pdf_input is true
    }
  ]
}