Vision and image input

curl https://api.impossibl.com/v1/chat/completions \
  -H "Authorization: Bearer imp-rt-..." \
  -H 'content-type: application/json' \
  -d '{
    "model": "openai/gpt-4o-mini",
    "messages": [{
      "role": "user",
      "content": [
        { "type": "text", "text": "What is in this image?" },
        { "type": "image_url", "image_url": { "url": "https://example.com/cat.png" } }
      ]
    }]
  }'

{ "type": "image_url", "image_url": { "url": "data:image/png;base64,iVBORw0KGgo..." } }

curl https://api.impossibl.com/v1/responses \
  -H "Authorization: Bearer imp-rt-..." \
  -H 'content-type: application/json' \
  -d '{
    "model": "openai/gpt-4o-mini",
    "input": [{
      "role": "user",
      "content": [
        { "type": "input_text", "text": "What is in this image?" },
        { "type": "input_image", "image_url": "https://example.com/cat.png" }
      ]
    }]
  }'

curl https://api.impossibl.com/v1/messages \
  -H "x-api-key: imp-rt-..." \
  -H 'content-type: application/json' \
  -d '{
    "model": "claude-haiku-4-5",
    "max_tokens": 256,
    "messages": [{
      "role": "user",
      "content": [
        { "type": "text", "text": "What is in this image?" },
        { "type": "image", "source": { "type": "url", "url": "https://example.com/cat.png" } }
      ]
    }]
  }'

{ "type": "image", "source": {
  "type": "base64", "media_type": "image/png", "data": "iVBORw0KGgo..."
}}