Codex FullMax is the upper plan for heavy programming work
The $3000 limit for 30 days is usually enough for active development, multiple projects, and parallel tasks
Main models: GPT-5.5, GPT-5.4, GPT-5.3 Codex Spark, GPT-5.3 Codex
Up to 10 simultaneous requests for extra chats, parallel development work, and subagents
Product format: API key + Proxy URL
This is not a ChatGPT account and not a top-up for your personal OpenAI account.
📦 What You Get
Personal access key
Working connection URL
$3000 limit for Codex / GPT-5 API access
Up to 10 simultaneous requests for extra chats and subagents
Connection through Codex CLI, Codex App, Cursor, VSCode, OpenClaw, or direct API calls
Step-by-step setup guide for CLI / App / IDE / API
Help with the first setup
💳 Plan
Codex FullMax $3000 - upper plan with a $3000 limit for 30 days and 10 simultaneous requests; better value by volume than regular balance packages
🧠 Models Included (updated for April 2026)
GPT-5.5
GPT-5.4
GPT-5.3 Codex Spark
GPT-5.3 Codex
GPT-5.2
GPT-5.2 Medium
GPT-5.2 High
GPT-5.2 XHigh
GPT-5.1
GPT-5.1 Medium
GPT-5.1 High
GPT-5.1 XHigh
GPT-5.1 Codex
GPT-5.1 Codex Max
GPT-5.1 Codex Mini
GPT-5
GPT-5 Codex
⏰ Important Before Purchase
❌ No auto-delivery
🕐 Delivery is usually handled during: 08:00-17:00 MSK
🛟 Support: almost around the clock, except at night
💬 Access data is sent in chat after payment
📌 Usage Rules
Total usage is limited by the $3000 cap
Up to 10 simultaneous requests for extra chats, parallel tasks, and subagents
Usage depends on the selected model, context length, and request volume
⚙️ How Delivery Works
Message us in chat after payment
Receive key + url + setup guide
Connect the client you need: Codex CLI, Codex App, Cursor, VSCode, OpenClaw, or direct API calls
For Codex App, Cursor, VSCode, and most compatible clients, Codex CLI must be configured first; direct API calls, including OpenClaw, are the exception
Run a test request
If needed, we help finalize setup until it works properly
❓FAQ
Why is the plan now called FullMax?
The plan has a clear $3000 limit for 30 days, so FullMax describes the product more accurately. It is still the best-value upper plan by volume, with the limit stated clearly.
Why is FullMax better value than balance packages?
FullMax gives you a $3000 limit in one plan. For heavy programming work, multiple projects, parallel development, extra chats, and subagents, it is usually more convenient and better value than buying several smaller packages separately.
How many parallel requests does it support?
Up to 10 simultaneous requests. This is mainly useful for extra chats, parallel tasks, and subagents.
Can I use it in IDEs, Codex CLI, and apps?
Yes. It works with Codex CLI, Codex App, Cursor, VSCode, OpenClaw, and direct API calls. For Codex App, Cursor, VSCode, and most compatible clients, Codex CLI must be configured first; direct API calls, including OpenClaw, are the exception.
Is this a ChatGPT account?
No. This is API access via a provided key and URL.
Does it work on Windows/macOS/Linux?
Yes, with installation according to the provided guide.
🏷️ Tags
Codex, Codex FullMax, Codex CLI, Codex App, Codex API, OpenAI API, GPT-5.5, GPT-5.5 API, GPT-5.4, GPT-5.4 API, GPT-5.3 Codex, GPT-5.3 Codex Spark, GPT-5.2, GPT-5.1, GPT-5 Codex, API key, proxy api, AI coding, code assistant, IDE AI, Cursor, VSCode, OpenClaw, 10 parallel requests, 3000 dollars, coding agent, Codex access