Codex Hosted calculator

Replace API spend with a Codex subscription.

Codex Hosted runs OpenAI's Codex for you, signed in with your ChatGPT account, so your workloads bill to the flat plan instead of the API. Put in your current OpenAI bill and ProxyLLM shows the plan capacity, the $129 SaaS fee, and the monthly savings.

Savings calculator

Put in your current OpenAI bill.

This uses your bill amount only. No token estimates, no guesswork. ProxyLLM maps your existing API spend to the Codex Hosted subscription tier that can absorb it.

Current monthly OpenAI API bill

ChatGPT Plus capacity $700 API-equivalent / mo

ChatGPT Pro 5x capacity $3,500 API-equivalent / mo

ChatGPT Pro 20x capacity $14,000 API-equivalent / mo

Recommended setup

ChatGPT Pro 5x capacity

Covers up to $3,500 of API-equivalent work each month.

Codex Hosted

Current OpenAI bill

$3,500

ProxyLLM + ChatGPT

$229

Monthly savings

$3,271

ProxyLLM SaaS fee $129/mo

ChatGPT Pro 5x subscription $100/mo

Example: a $3,500 OpenAI bill becomes $229/mo, so you save $3,271.