WORKING REFERENCE

Codex Usage Limits

A stable mental model for the limits you see—kept separate from values that can change.

Last updated: September 15, 2026
01

SHORT WINDOW

5-hour / session limit

This is the shorter operating window shown in Codex. It can recover before the weekly allowance does, so a temporary stop does not necessarily mean the weekly quota is exhausted.

02

LONG WINDOW

Weekly limit

The weekly allowance is the longer runway. A healthy short window cannot override an exhausted weekly allowance; check both whenever work is blocked.

03

VARIABLE COST

Why tasks consume differently

Codex usage can vary with the selected model, task complexity, context size, and other service conditions. Treat the indicators in your account as the source of truth.

04

SEPARATE SYSTEM

Subscription vs. API

Codex access included with a ChatGPT subscription is separate from usage billed through the OpenAI API. Reaching one limit does not describe the balance or billing state of the other.

CHECK / STATUS

Where to check usage

Run /status inside Codex or use the current usage view provided by the product. Copying that output into this site’s Usage Tracker keeps the parsing on your device.

Treat the percentages and reset times displayed in your own account as authoritative for your subscription. This community tool does not query or inspect your account.

FAQ / LIMITS

Common questions

01

Where can I check my Codex usage?

Open Codex and run /status, or check the usage information shown by the product. Availability and wording can change over time.

02

Are the five-hour and weekly limits fixed token amounts?

Do not assume they are simple token counters. Consumption can vary by model, task, context, and current product rules.

03

Is subscription usage the same as API usage?

No. Subscription access and API billing are separate usage systems with separate controls and limits.

NEXT / PATH

Continue your check