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Access walkthrough

Talk through ChatGPT 5.5 Ultra and Codex API access before you buy.

Package fit, OpenAI-compatible integration, unlimited tokens, 4 concurrent connections, Stripe payment, and manual delivery of key, base URL, and setup files.

Independent provider. Not affiliated with OpenAI.

Use this page for pre-buy package fit. No card is required to request a walkthrough. After checkout, use contact for setup or billing questions.

What we will cover

  • Match your ChatGPT 5.5 Ultra workload while 5.6 variants are paused to Unlimited Weekly or Unlimited Monthly.
  • Review unlimited token consumption, 4 concurrent connections, package dates, request logs, and dashboard visibility.
  • Walk through checkout, manual setup delivery, API key, base URL, setup files, activation date, and the 10 minutes to 5 hours fulfillment window.

Request a walkthrough

Name and work email are enough to start. Add usage context only if you already know it.

No credit card is needed for a walkthrough request. We use your details only to prepare and follow up. If the form does not send, email sales@unlimitedcodex.com or message @unlimitedcodex_com on Telegram.

Free tools

Prepare for the walkthrough

Estimate workload, quota pressure, and package fit before your demo so the conversation stays tactical.

Browse all tools

Workload Calculator

Estimate concurrent connection pressure and recommend Weekly vs Monthly from load inputs.

Quota Estimator

Convert MAU and prompt assumptions into monthly tokens, requests, and quota threshold warnings.

Package Quiz

Answer six questions to get a Weekly or Monthly recommendation with a pre-filled signup link.

Build vs Buy

Estimate engineering cost to self-build keys, quotas, logs, and billing vs subscribing to unlimitedcodex.

Request a ChatGPT 5.5 Ultra and Codex API Access Walkthrough | unlimitedcodex