Does GPT Master show relative ages like "3 months ago"?

No. GPT Master shows only absolute timestamps: the exact date and time. This is more reliable because the meaning of a relative label changes depending on when you read it.

Can I tell the age of a conversation from the sidebar without opening it?

The timestamp feature works inside open conversations. To check the age of a conversation, you open it and look at the first message timestamp. This takes one click.

What does the timestamp format look like for very old conversations?

For messages from previous years, GPT Master appends the year: "Mar 11 2024, 1:00 AM". For current-year messages the year is omitted for brevity. Hover for the full weekday.

Does knowing the age of a conversation help with anything practical?

It helps when reviewing advice to check if information might be outdated, when documenting research to record when you gathered it, and when revisiting project threads to understand the timeline of decisions.

Timestamps

How to tell how old a ChatGPT conversation is

Updated May 27, 2026

Quick answer

ChatGPT groups conversations by rough labels ("Yesterday", "Last 7 days", "Last month") but never shows a calendar date. Once a conversation is more than a month old, you cannot tell when it happened from the sidebar alone. GPT Master adds exact timestamps to every message, so opening any conversation immediately shows you the precise date it started and when each message was sent.

Vague sidebar labels in ChatGPT make it impossible to know the actual age of a conversation. "Last month" could mean three weeks ago or six weeks ago. For anything you care about tracking (a research thread, a project log, advice you received) that ambiguity is a problem. GPT Master removes it by showing exact dates on every message.

1

Install GPT Master to add real dates to your conversations

Get GPT Master from the Chrome Web Store. It works in Chrome, Edge, Brave, Arc, and Opera. After installation, open chatgpt.com and every conversation gains message-level timestamps instantly.
2

Open the conversation to see its true age

Click any conversation in your sidebar. The timestamp on the first message tells you exactly when the conversation began. No more guessing from vague sidebar groupings.
3

Check timestamps throughout the thread for the full span

Scan the timestamps on later messages to see when you returned across multiple sessions. The gap between message timestamps tells you the age of each part of the conversation.

GPT Master

Know exactly how old any ChatGPT conversation is.

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Frequently asked questions

Does GPT Master show relative ages like "3 months ago"?: No. GPT Master shows only absolute timestamps: the exact date and time. This is more reliable because the meaning of a relative label changes depending on when you read it.
Can I tell the age of a conversation from the sidebar without opening it?: The timestamp feature works inside open conversations. To check the age of a conversation, you open it and look at the first message timestamp. This takes one click.
What does the timestamp format look like for very old conversations?: For messages from previous years, GPT Master appends the year: "Mar 11 2024, 1:00 AM". For current-year messages the year is omitted for brevity. Hover for the full weekday.
Does knowing the age of a conversation help with anything practical?: It helps when reviewing advice to check if information might be outdated, when documenting research to record when you gathered it, and when revisiting project threads to understand the timeline of decisions.

Related guides

Ready to fix this for good?

Know exactly how old any ChatGPT conversation is.

Add to Chrome · Free

How to tell how old a ChatGPT conversation is

Install GPT Master to add real dates to your conversations

Open the conversation to see its true age

Check timestamps throughout the thread for the full span

Frequently asked questions

Related guides

Make ChatGPT work the way you actually use it.