ビジョン理解（画像認識）API

from openai import OpenAI
import base64

client = OpenAI(
    api_key="YOUR_API_KEY",            # Replace with your APIYI key
    base_url="https://api.apiyi.com/v1"
)

with open("demo.png", "rb") as f:
    image_b64 = base64.b64encode(f.read()).decode()

response = client.chat.completions.create(
    model="gemini-3.8-flash",          # or claude-sonnet-5-5 / gpt-6-sol / qwen3.8-flash, etc.
    messages=[{
        "role": "user",
        "content": [
            {"type": "text", "text": "Transcribe all text in the image word for word, and output tables as Markdown tables"},
            {"type": "image_url", "image_url": {"url": f"data:image/png;base64,{image_b64}"}},
        ],
    }],
)

print(response.choices[0].message.content)
print(response.usage.prompt_tokens)    # ~900-1,300 for a 1200x760 image; a few dozen means the image never arrived

response = client.chat.completions.create(
    model="gemini-3.8-flash",
    messages=[{
        "role": "user",
        "content": [
            {"type": "text", "text": "Describe this image in detail"},
            {"type": "image_url", "image_url": {"url": "https://your-bucket.example.com/demo.png"}},
        ],
    }],
)

response = client.chat.completions.create(
    model="claude-sonnet-5-5",
    messages=[{
        "role": "user",
        "content": [
            {"type": "text", "text": "Below are image 1 and image 2. What is different between them?"},
            {"type": "image_url", "image_url": {"url": f"data:image/png;base64,{image1_b64}"}},
            {"type": "image_url", "image_url": {"url": f"data:image/png;base64,{image2_b64}"}},
        ],
    }],
)

# 1. Build the request body: the Base64 string is long, so write it to a file instead of a command-line argument (macOS / Linux)
printf '{"model":"gemini-3.8-flash","messages":[{"role":"user","content":[{"type":"text","text":"Describe this image"},{"type":"image_url","image_url":{"url":"data:image/png;base64,%s"}}]}]}' \
  "$(base64 < demo.png | tr -d '\n')" > req.json

# 2. Send it
curl https://api.apiyi.com/v1/chat/completions \
  -H "Authorization: Bearer $APIYI_API_KEY" \
  -H "Content-Type: application/json" \
  -d @req.json

response = client.responses.create(
    model="gpt-6-sol",
    input=[{
        "role": "user",
        "content": [
            {"type": "input_text", "text": "Transcribe all text in the image word for word"},
            {"type": "input_image", "image_url": f"data:image/png;base64,{image_b64}"},
        ],
    }],
)

print(response.output_text)

import anthropic, base64

client = anthropic.Anthropic(
    api_key="YOUR_API_KEY",            # Replace with your APIYI key
    base_url="https://api.apiyi.com"
)

with open("demo.png", "rb") as f:
    image_b64 = base64.b64encode(f.read()).decode()

message = client.messages.create(
    model="claude-sonnet-5-5",
    max_tokens=1024,
    messages=[{
        "role": "user",
        "content": [
            {"type": "image", "source": {"type": "base64", "media_type": "image/png", "data": image_b64}},
            {"type": "text", "text": "Transcribe all text in the image word for word"},
        ],
    }],
)

print(message.content[0].text)
# Claude can also take a public URL: {"type": "image", "source": {"type": "url", "url": "https://..."}}

from google import genai
from google.genai import types

client = genai.Client(
    api_key="YOUR_API_KEY",            # Replace with your APIYI key
    http_options={"base_url": "https://api.apiyi.com"}
)

with open("demo.png", "rb") as f:
    image_bytes = f.read()

response = client.models.generate_content(
    model="gemini-3.8-flash",
    contents=types.Content(parts=[
        types.Part.from_bytes(data=image_bytes, mime_type="image/png"),
        types.Part(text="Transcribe all text in the image word for word"),
    ]),
)

print(response.text)
print(response.usage_metadata.prompt_tokens_details)  # includes an IMAGE entry when the image reached the model

import base64, io
from PIL import Image

def image_to_data_uri(path, max_side=2048):
    """Resize the long side to max_side and convert to JPEG, so the declared type always matches the content"""
    img = Image.open(path)
    img.thumbnail((max_side, max_side))
    buf = io.BytesIO()
    img.convert("RGB").save(buf, format="JPEG", quality=90)
    return "data:image/jpeg;base64," + base64.b64encode(buf.getvalue()).decode()

{
  "error": {
    "message": "Timeout while downloading ip:port",
    "type": "invalid_request_error",
    "code": "invalid_image_url"
  }
}

{
  "type": "error",
  "error": {
    "type": "invalid_request_error",
    "message": "...source.base64: invalid base64 data"
  }
}

// ❌ Wrong: what follows base64, is a link, not Base64-encoded data
"image_url": {
  "url": "data:image/jpeg;base64,https://example.com/generations/temp-xxx.jpg"
}

// ✅ The image is a web URL → pass the link directly, with no prefix
"image_url": {
  "url": "https://example.com/generations/temp-xxx.jpg"
}

// ✅ The image is a local file / binary → Base64-encode it, then build the data URI
"image_url": {
  "url": "data:image/jpeg;base64,/9j/4AAQSkZJRgABAQ..."
}

{
  "status_code": 400,
  "error": {
    "message": "InvokeModel: operation error Bedrock Runtime: InvokeModel, https response error StatusCode: 400, ... ValidationException: ...source.base64: The image was specified using the image/png media type, but the image appears to be a image/jpeg image"
  }
}

import base64

def image_to_data_uri(image_path):
    """Detect the real format from the file header so the media type always matches the content"""
    with open(image_path, "rb") as f:
        data = f.read()

    if data[:8] == b"\x89PNG\r\n\x1a\n":
        mime = "image/png"
    elif data[:3] == b"\xff\xd8\xff":
        mime = "image/jpeg"
    elif data[:6] in (b"GIF87a", b"GIF89a"):
        mime = "image/gif"
    elif data[:4] == b"RIFF" and data[8:12] == b"WEBP":
        mime = "image/webp"
    else:
        raise ValueError(f"Unrecognized image format: {image_path}")

    return f"data:{mime};base64,{base64.b64encode(data).decode('utf-8')}"