Create Messages

Create a model response for the given chat conversation.

Parameter support can differ depending on the model used to generate the response, particularly for newer reasoning models. Parameters that are only supported for reasoning models are noted below.

Authorization

AuthorizationBearer <token>

In: header

Header Parameters

OpenAI-Organization?Openai-Organization

Organization Id from OpenAi compatible endpoint. Required to organization access or project access (with OpenAI-Project header) when logged as User or Admin User.

OpenAI-Project?Openai-Project

Project Id from OpenAi compatible endpoint. Required to project access for organization api key or User / Admin User access with OpenAI-Organization

Request Body

max_tokens?Max Tokens

Default8000

messagesMessages

modelModel

metadata?Metadata | null

service_tier?Service Tier

stop_sequences?Stop Sequences

stream?Stream

Defaultfalse

system?System

Default""

temperature?Temperature

Default1

thinking?ThinkingConfigParam | null

tool_choice?ToolChoice | null

tools?Tools

top_k?Top K

top_p?Top P

Response Body

curl -X POST "https://loading/v1/messages" \
  -H "OpenAI-Organization: string" \
  -H "OpenAI-Project: string" \
  -H "Content-Type: application/json" \
  -d '{
    "messages": [
      {
        "content": "Say Hello World o/.",
        "role": "user"
      }
    ],
    "model": "qwen3:0.6b"
  }'

curl -X POST "https://loading/v1/messages" \  -H "OpenAI-Organization: string" \  -H "OpenAI-Project: string" \  -H "Content-Type: application/json" \  -d '{    "messages": [      {        "content": "Say Hello World o/.",        "role": "user"      }    ],    "model": "qwen3:0.6b"  }'

{
  "type": "message",
  "id": "string",
  "content": [
    {
      "type": "text",
      "text": "string",
      "citations": [
        {
          "type": "char_location",
          "cited_text": "string",
          "document_index": 0,
          "document_title": "string",
          "end_char_index": 0,
          "start_char_index": 0
        }
      ]
    }
  ],
  "model": "string",
  "role": "user",
  "stop_reason": "end_turn",
  "stop_sequence": "string",
  "usage": {
    "cache_creation": {
      "ephemeral_1h_input_tokens": 0,
      "ephemeral_5m_input_tokens": 0
    },
    "cache_creation_inpuit_tokens": 0,
    "cache_read_input_tokens": 0,
    "input_tokens": 0,
    "output_tokens": 0,
    "server_tool_use": {
      "web_search_requests": 0
    },
    "service_tier": "standard"
  }
}

{
  "detail": [
    {
      "loc": [
        "string"
      ],
      "msg": "string",
      "type": "string",
      "input": null,
      "ctx": {}
    }
  ]
}

Authorization

Header Parameters

Request Body

Response Body

200

422