IMAGE_BASE64=$(base64 -w 0 'path/to/the/image')

curl -X POST "http://localhost:11434/api/chat" -d @- << EOF
{
  "model": "qwen3",
  "messages": [
    {
      "role": "user",
      "content": "Describe this image.",
      "images": ["$IMAGE_BASE64"]
    }
  ],
  "options": {
    "num_ctx": 4096
  },
  "stream": false
}
EOF