GPT 5.3 Codex API

import os
from openai import OpenAI

client = OpenAI(
    api_key=os.environ["AELDER_API_KEY"],
    base_url="https://aelder.dev/v1",
)

response = client.chat.completions.create(
    model="gpt-5.3-codex",
    messages=[{"role": "user", "content": "Hello!"}],
)

print(response.choices[0].message.content)

import OpenAI from "openai";

const client = new OpenAI({
  apiKey: process.env.AELDER_API_KEY,
  baseURL: "https://aelder.dev/v1",
});

const response = await client.chat.completions.create({
  model: "gpt-5.3-codex",
  messages: [{ role: "user", content: "Hello!" }],
});

console.log(response.choices[0].message.content);

curl https://aelder.dev/v1/chat/completions \
  -H "Authorization: Bearer $AELDER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-5.3-codex",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'