gpt-5.3-codex

Provider: OpenAI

Price: $0.35 per 1M input tokens, $2.8 per 1M output tokens

from openai import OpenAI

client = OpenAI(base_url="https://apily.pro/v1", api_key="YOUR_API_KEY")
client.chat.completions.create(model="gpt-5.3-codex", messages=[{"role": "user", "content": "Hello"}])
POST /v1/chat/completions