If ChatGPT has never "seen" your latest launch, it cannot recommend it.
The knowledge cutoff is the reason, and it is not the same on every model.
A knowledge cutoff is the date after which a model has no built-in training knowledge. For ChatGPT, it varies by model: GPT-4o sits at October 2023, while the GPT-5 series moved to August 2025 and ChatGPT-5.5 to late 2025. Browsing extends a model past its cutoff by pulling live web results, but without it, answers are limited to pre-cutoff training data.
What is a knowledge cutoff?
A knowledge cutoff is the point in time after which a language model has no information baked into its training. Everything published after that date is invisible to the model unless it actively searches the web. So a model with an October 2023 cutoff has no trained knowledge of a product you launched in 2025, and will either omit it or guess, unless browsing is on.
This matters because most people assume ChatGPT knows everything current. It does not. It knows its training data up to a date, plus whatever it retrieves live in that session.
ChatGPT knowledge cutoff dates by model
Cutoff dates differ across ChatGPT models, and they shift as new versions ship. Here is a current snapshot compiled from community trackers and model documentation.
| Model | Reported knowledge cutoff |
|---|---|
| GPT-4o | October 2023 |
| o3-mini | October 2023 |
| o3 / o3-pro | June 2024 |
| GPT-5 series | August 2025 |
| GPT-5.2 | August 2025 |
| ChatGPT-5.5 | December 2025 |
Does the cutoff mean ChatGPT cannot know recent information?
No, not when browsing is on. The cutoff only limits a model's built-in training knowledge. ChatGPT Plus and the search feature can retrieve live web pages, which lets the model answer about events well past its training cutoff. Without browsing, though, it falls back to training data and may miss or hallucinate anything recent.
So there are effectively two modes. In training-only mode, the cutoff is a hard wall. In browsing mode, the model can reach current information, but whether it cites you then depends on your AI search visibility, not the cutoff.
Why the knowledge cutoff matters for your brand
The cutoff decides whether ChatGPT knows you exist without searching. If you launched after a model's cutoff and the user is not in browsing mode, you simply are not in the answer. Even a well-known competitor with an older footprint can dominate non-browsing answers purely because the model was trained while they existed and you did not.
Two things follow. First, publish authoritative content and earn mentions early, so the next training run captures you. Second, optimize for the browsing path, since that is how recent brands get surfaced before the next cutoff catches up. Either way, you need to know how ChatGPT currently answers about you, which means monitoring rather than guessing. We covered the how in our guide to how ChatGPT search works.
Frequently asked questions
What is ChatGPT's knowledge cutoff?
Does ChatGPT know current events?
Why does ChatGPT not know about my recent launch?
Do all ChatGPT models have the same cutoff?
How do I make sure ChatGPT knows about my brand?
Know what ChatGPT knows about you
The knowledge cutoff is why ChatGPT can confidently recommend a competitor and skip you entirely. You cannot change a model's training date, but you can earn your way into the next one and into its live browsing results.
Start by checking how ChatGPT describes your brand today, then track it over time with MentionsAPI across every engine.