Name: GPT-5 – AI Coding & Reasoning | Free · $1/mo | API.market
Brand: swift-api
SKU: api-swift-api-gpt-5
Availability: InStock
Author: API Market

Swift API

# GPT-5

## Overview

The GPT-5 API provides access to OpenAI's flagship language model, optimized for complex coding, reasoning, and agentic tasks across various domains.  This API empowers developers to integrate cutting-edge AI capabilities into their applications, enabling them to build innovative solutions for a wide range of problems.  The API offers a streamlined interface for interacting with the model, facilitating tasks such as generating text, translating languages, writing different kinds of creative content, and answering your questions in an informative way.

## Features

* **Coding Proficiency:**  GPT-5 excels at understanding and generating code in various programming languages.
* **Advanced Reasoning:**  The model can perform complex reasoning tasks, including logical deduction and problem-solving.
* **Agentic Capabilities:** GPT-5 can act as an agent, carrying out instructions and interacting with other systems.
* **Cross-Domain Applicability:**  The model's knowledge spans numerous domains, making it versatile for diverse applications.
* **Content Filtering:** Built-in content filters help mitigate risks associated with harmful content generation.
* **Usage Metadata:** Detailed usage information is provided for tracking and optimization.


## Use Cases

* **Automated Code Generation:** Streamline software development by automating the creation of code snippets, functions, or even entire programs.  Ideal for developers looking to boost productivity and reduce development time.
* **Interactive Chatbots:** Build intelligent, responsive chatbots capable of engaging in complex conversations and providing insightful responses.  Suitable for customer support, virtual assistants, and interactive entertainment.
* **Content Creation and Enhancement:** Generate various forms of creative content, including articles, blog posts, scripts, musical pieces, and email.  A powerful tool for content creators and marketers looking to improve content quality and efficiency.
* **Data Analysis and Interpretation:** Leverage GPT-5's reasoning abilities to analyze data, extract insights, and generate reports. Useful for researchers, analysts, and businesses looking to gain a deeper understanding of their data.
* **Personalized Learning Experiences:** Create dynamic and adaptive learning experiences tailored to individual student needs.  Excellent for educational platforms and online learning tools.

## Visual Examples

This API primarily deals with text input and output.  Visual examples are not directly applicable. Example prompts and responses are showcased in the Endpoints section.


## Pricing

* 1 API unit equals 1 request to the `/chat/completions` endpoint.
* GET requests to check prediction status (`GET /api/v1/magicapi/gpt-5/predictions/{id}`) are free.
* Contact hello[at]api.market for detailed pricing tiers based on usage volume.

## API Documentation


### Base URL

`https://prod.api.market/api/v1/magicapi/gpt-5`


### Authentication

Include your API key in the `x-api-market-key` header:

```
x-api-market-key: YOUR_API_MARKET_KEY
```


### Asynchronous Processing

This API does **not** use asynchronous processing.  Requests to the `/chat/completions` endpoint return the completed response directly.


### Endpoints

#### POST /api/v1/magicapi/gpt-5/chat/completions

Creates a model response for the given chat conversation.

**Request Body Example:**

```json
{
  "model": "gpt-5",
  "messages": [
    {
      "role": "user",
      "content": "There are ten birds in a tree. A hunter shoots one. How many are left in the tree?"
    }
  ]
}
```

**cURL Example:**

```bash
curl -X POST "https://prod.api.market/api/v1/magicapi/gpt-5/chat/completions" \
-H "Content-Type: application/json" \
-H "x-api-market-key: YOUR_API_MARKET_KEY" \
-d '{
  "model": "gpt-5",
  "messages": [
    {
      "role": "user",
      "content": "There are ten birds in a tree. A hunter shoots one. How many are left in the tree?"
    }
  ]
}'
```

**Response Body Example (200 OK):**

```json
{
  "id": "chatcmpl-CFJWVPlCose16sy2GzKWGeowqva9s",
  "object": "chat.completion",
  "created": 1757766003,
  "model": "gpt-5",
  "choices": [
    {
      "index": 0,
      "finish_reason": "stop",
      "message": {
        "role": "assistant",
        "content": "If a hunter shoots one bird, the noise would likely scare the other birds away. So, even though one bird is shot, the rest would typically fly off, leaving **0 birds** in the tree."
      }
    }
  ],
  "usage": {
    "prompt_tokens": 28,
    "completion_tokens": 43,
    "total_tokens": 71
  }
}
```



## Status Codes

* **200 OK:** Request successful.
* **400 Bad Request:** Invalid input parameters or malformed request.
* **401 Unauthorized:** Missing or invalid API key.
* **429 Too Many Requests:** Rate limit exceeded.
* **500 Internal Server Error:** Server-side error.


## Rate Limits

Contact hello[at]api.market for information on rate limits.

## Error Handling


Error responses will be returned in JSON format:

```json
{
  "error": {
    "code": "invalid_parameter",
    "message": "The parameter 'model' is required",
    "status": 400
  }
}
```


## Implementation Guide

### Example Code



```javascript
// JavaScript example
const apiKey = "YOUR_API_MARKET_KEY";
const baseUrl = "https://prod.api.market/api/v1/magicapi/gpt-5";

async function getCompletion(messages) {
  try {
    const response = await fetch(`${baseUrl}/chat/completions`, {
      method: "POST",
      headers: {
        "Content-Type": "application/json",
        "x-api-market-key": apiKey
      },
      body: JSON.stringify({ model: "gpt-5", messages: messages })
    });

    if (!response.ok) {
      const errorData = await response.json();
      throw new Error(`API error: ${response.status} ${errorData.error.message}`);
    }

    return await response.json();
  } catch (error) {
    console.error("Error:", error);
    throw error;
  }
}


// Example usage
const messages = [{"role": "user", "content": "Hello, how are you?"}];
getCompletion(messages)
  .then(completion => console.log(completion))
  .catch(error => console.error(error));


```

```python
# Python example
import requests

API_KEY = "YOUR_API_MARKET_KEY"
BASE_URL = "https://prod.api.market/api/v1/magicapi/gpt-5"

def get_completion(messages):
    headers = {
        "Content-Type": "application/json",
        "x-api-market-key": API_KEY
    }
    
    response = requests.post(
        f"{BASE_URL}/chat/completions",
        headers=headers,
        json={"model": "gpt-5", "messages": messages}
    )
    
    if response.status_code != 200:
        error_data = response.json()
        raise Exception(f"API error: {response.status_code} {error_data['error']['message']}")
    
    return response.json()


# Example usage:
messages = [{"role": "user", "content": "Translate 'Hello, how are you?' to French."}]
try:
    completion = get_completion(messages)
    print(completion)
except Exception as e:
    print(f"An error occurred: {e}")
```

```bash
# cURL example
curl -X POST "https://prod.api.market/api/v1/magicapi/gpt-5/chat/completions" \
-H "Content-Type: application/json" \
-H "x-api-market-key: YOUR_API_MARKET_KEY" \
-d '{
  "model": "gpt-5",
  "messages": [
    {
      "role": "user",
      "content": "What is the capital of France?"
    }
  ]
}'
```


## FAQ

* **What languages does GPT-5 support?**  GPT-5 has broad multilingual capabilities.  Contact hello[at]api.market for a comprehensive list.


## Contact Us


If you have any questions or need assistance, you can reach out to us through the embedded chat on the bottom right corner of the page or send an email to contact@swiftapi.net



Access OpenAI's flagship model for complex coding, reasoning, and agentic tasks. Free 1000 calls/mo, from $1/mo. Start free on API.market.

GPT-5 – AI Coding & Reasoning | Free · $1/mo | API.market

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GPT-5 is OpenAI flagship model for coding, reasoning, and agentic tasks across domains

GPT-5