Vision + text via VerticalAPI

from openai import OpenAI
import base64

client = OpenAI(base_url="https://api.verticalapi.com/v1", api_key="vapi_...")

# 1. As HTTPS URL
response = client.chat.completions.create(
    model="claude-sonnet-4-5",
    messages=[{
        "role": "user",
        "content": [
            {"type": "text", "text": "What's in this image?"},
            {"type": "image_url", "image_url": {"url": "https://example.com/cat.jpg"}}
        ]
    }]
)

# 2. As base64 (works on every provider)
img_b64 = base64.b64encode(open("chart.png", "rb").read()).decode()
response = client.chat.completions.create(
    model="gpt-4o",
    messages=[{
        "role": "user",
        "content": [
            {"type": "text", "text": "Extract the data table."},
            {"type": "image_url", "image_url": {"url": f"data:image/png;base64,{img_b64}"}}
        ]
    }]
)