> ## Documentation Index
> Fetch the complete documentation index at: https://docs.crazyrouter.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Python Vision

> Python image recognition with gpt-5.5 and Claude

> Last updated: 2026-06-06

## gpt-5.5 Vision - URL Method

```python theme={null}
from openai import OpenAI

client = OpenAI(api_key="sk-xxx", base_url="https://api.crazyrouter.com/v1")

response = client.chat.completions.create(
    model="gpt-5.5",
    messages=[{
        "role": "user",
        "content": [
            {"type": "text", "text": "Describe the content of this image"},
            {
                "type": "image_url",
                "image_url": {
                    "url": "https://example.com/photo.jpg"
                }
            }
        ]
    }]
)

print(response.choices[0].message.content)
```

## gpt-5.5 Vision - Local Image

```python theme={null}
import base64
from openai import OpenAI

client = OpenAI(api_key="sk-xxx", base_url="https://api.crazyrouter.com/v1")

# Read local image and convert to base64
with open("photo.jpg", "rb") as f:
    image_data = base64.b64encode(f.read()).decode("utf-8")

response = client.chat.completions.create(
    model="gpt-5.5",
    messages=[{
        "role": "user",
        "content": [
            {"type": "text", "text": "What's in this image?"},
            {
                "type": "image_url",
                "image_url": {
                    "url": f"data:image/jpeg;base64,{image_data}"
                }
            }
        ]
    }]
)

print(response.choices[0].message.content)
```

## Multi-Image Comparison

```python theme={null}
response = client.chat.completions.create(
    model="gpt-5.5",
    messages=[{
        "role": "user",
        "content": [
            {"type": "text", "text": "Compare the differences between these two images"},
            {"type": "image_url", "image_url": {"url": "https://example.com/img1.jpg"}},
            {"type": "image_url", "image_url": {"url": "https://example.com/img2.jpg"}}
        ]
    }]
)

print(response.choices[0].message.content)
```

## Claude Vision

Claude models also support vision through the OpenAI-compatible format:

```python theme={null}
response = client.chat.completions.create(
    model="claude-opus-4-8",
    messages=[{
        "role": "user",
        "content": [
            {"type": "text", "text": "Describe this image in detail"},
            {
                "type": "image_url",
                "image_url": {
                    "url": f"data:image/png;base64,{image_data}"
                }
            }
        ]
    }],
    max_tokens=1024
)

print(response.choices[0].message.content)
```

## Supported Vision Models

| Model             | Description                                                                          |
| ----------------- | ------------------------------------------------------------------------------------ |
| `gpt-5.5`         | OpenAI-compatible vision model verified successfully in production on March 23, 2026 |
| `claude-opus-4-8` | Claude OpenAI-compatible vision model verified successfully in production            |

<Note>
  Vision input with `gpt-5.5` and `claude-opus-4-8` was verified in Crazyrouter production on March 23, 2026. Image size should not exceed 20MB; base64 encoding adds approximately 33% to the payload size, so URL method is recommended for larger files.
</Note>