LLMs

GPT-5 API

GPT-5 is OpenAI's intelligent and capable model that delivers frontier performance in coding, math, writing, health, visual understanding, and real-world reasoning. Designed as a unified system, GPT-5 adapts its depth of reasoning to each task. It provides fast, lightweight responses when appropriate, and invoking extended “thinking” for complex, high-stakes problems.

1RPC.ai

Reasoning

Speed

$1.25/$10.00

Input/Output

400,000Context Window

Implement

Get started with an API-friendly relay

Send your first request to verified LLMs with a single code snippet.

import requests
import json
response = requests.post(
    url="https://api.1rpc.ai/v1/chat/completions",
    headers={
        "Authorization": "Bearer <1RPC_AI_API_KEY>",
        "Content-type": "application/json",
    },
    data=json.dumps({
        "model": "gpt-5",
        "messages": [
            {
                "role": "user",
                "content": "What is the meaning of life?"
            }
        ]
    })
)
print(response.json())

Pricing

Estimate Usage Across Any AI Model

Adjust input and output size to estimate token usage and costs.

GPT-5 Token Costs Calculator

Input tokens≈ 7,500 words

Output tokens≈ 75,000 words

$1.0125Total cost per million tokens

Learn about Pricing