gpt-4.5-preview

This documentation is valid for the following list of our models:

• gpt-4.5-preview

Model Overview

OpenAI's latest general-purpose language model, designed to advance capabilities in reasoning, creativity, and conversational coherence. It builds upon GPT-4 with a broader knowledge base, improved alignment with user intent, and enhanced emotional intelligence (EQ). The model is positioned as a research preview and is OpenAI’s largest and most knowledgeable model to date.

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API Schema

Generate a conversational response using a language model.

Creates a chat completion using a language model, allowing interactive conversation by predicting the next response based on the given chat history. This is useful for AI-driven dialogue systems and virtual assistants.

post

/v1/chat/completions

Authorizations

Body

modelundefined · enumrequired

Options: gpt-4.5-preview

frequency_penaltynumber | nullable

logit_biasobject | nullable

logprobsboolean | nullable

top_logprobsnumber | nullable

max_tokensnumber · min: 1 · default: 512

max_completion_tokensinteger · min: 1

ninteger | nullable

predictionobject

presence_penaltynumber | nullable

seedinteger · min: 1

messagesone of[]required

streamboolean · default: false

stream_optionsobject

top_pnumber · min: 0.1 · max: 1

temperaturenumber · max: 2

stopany of

toolsobject[]

tool_choiceany of

parallel_tool_callsboolean

reasoning_effortstring · enum

Options: low, medium, high

response_formatone of

Responses

cURL

JavaScript

Python

HTTP

cURL

curl -L \
  --request POST \
  --url 'https://api.aimlapi.com/v1/chat/completions' \
  --header 'Authorization: Bearer <YOUR_AIMLAPI_KEY>' \
  --header 'Content-Type: application/json' \
  --data '{
    "model": "gpt-4.5-preview",
    "frequency_penalty": 1,
    "logit_bias": {
      "ANY_ADDITIONAL_PROPERTY": 1
    },
    "logprobs": true,
    "top_logprobs": 1,
    "max_tokens": 512,
    "max_completion_tokens": 1,
    "n": 1,
    "prediction": {
      "type": "content",
      "content": "text"
    },
    "presence_penalty": 1,
    "seed": 1,
    "messages": [
      {
        "role": "system",
        "content": "text",
        "name": "text"
      }
    ],
    "stream": false,
    "stream_options": {
      "include_usage": true
    },
    "top_p": 1,
    "temperature": 1,
    "stop": "text",
    "tools": [
      {
        "type": "function",
        "function": {
          "description": "text",
          "name": "text",
          "parameters": null,
          "required": [
            "text"
          ]
        }
      }
    ],
    "tool_choice": "none",
    "parallel_tool_calls": true,
    "reasoning_effort": "low",
    "response_format": {
      "type": "text"
    }
  }'

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