Vision input with Meridian

Pass image_url content parts directly in the messages array. Supported on gpt-4o, gpt-4.1, and Llama-4-Maverick.

Quickstart

POST /v1/chat/completions
Content-Type: application/json

{
  "model": "gpt-4o",
  "messages": [
    {
      "role": "user",
      "content": [
        {
          "type": "text",
          "text": "What is in this image?"
        },
        {
          "type": "image_url",
          "image_url": {
            "url": "https://example.com/photo.jpg",
            "detail": "auto"
          }
        }
      ]
    }
  ]
}

Supported models

gpt-4o
High-fidelity vision, tool use, structured outputs.
gpt-4.1
Latest snapshot with improved instruction following.
Llama-4-Maverick
Open-weight multimodal, 17B active params.

image_url object

FieldTypeDescription
urlstringHTTP/HTTPS URL or base64 data URI
detailstringauto low high

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