JSON mode models

Requirements and limitations

JSON mode is not guaranteed JSON Schema compliance. Ask for JSON explicitly and validate the response in your application.

Only active chat models with explicit support are included. Missing capability values remain unknown; top-level values take precedence over nested values. Image input also establishes vision support.

Example request

POST https://api.llm7.io/v1/chat/completions
Authorization: Bearer YOUR_LLM7_API_KEY
Content-Type: application/json

{
  "model": "DeepSeek-V4-Flash-0731",
  "messages": [
    {
      "role": "user",
      "content": "Return a JSON object with a greeting field."
    }
  ],
  "response_format": {
    "type": "json_object"
  }
}

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