LLMs

GPT-5.2 API

GPT-5.2 is OpenAI's capable and refined model, built to excel in professional knowledge work, complex reasoning, multimodal understanding, and agentic workflows. It sets new state-of-the-art scores across many frontier benchmarks, including GDPval (74.1%), SWE-Bench Verified (80.0%), GPQA Diamond (92.4%), and ARC-AGI-2 (52.9%), often outperforming industry experts at real-world tasks.

1RPC.ai1RPC.ai
Reasoning
Speed
$1.75/$14.00
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-5.2",
        "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-5.2 Token Costs Calculator

≈ 7,500 words
≈ 75,000 words
$1.4175Total cost per million tokens
Learn about Pricing