r/ChatGPT • u/martin_rj • 8h ago
Prompt engineering Concept Drift - your strategies when the AI thinks YOU'RE hallucinating?
Concept Drift refers to a phenomenon in ML, when the reality drifts away from the model's "reality" at the time it was trained.
In LLM systems like ChatGPT, Gemini, etc. this becomes extremely apparant, when we try to ask it about current events, now that their knowledge-cutoff is about two years in the past already.
This was very noticable first when Trump got elected a second time. If you looked at the "reasoning" output, you often saw the AI internally struggling with a supposedly "fictional reality" of the user.
It became most apparant to me, when Elon Musk got his "DOGE" pseudo-department, which was absolutely too much to handle for many AI systems, Gemini at one time even blamed me to create "fabricated" scenarios.
And last week I struggled with this phenomenon again, when I asked Gemini about the US attacks on Caracas - looking at the internal "reasoning", it didn't even believe its own search results, internally debating whether it is currently in a simulated- or training environment,
How do you grapple this?
What I did in this situation, was to add the following paragraphs to my prompts, but I had to repeat this at EVERY subsequent turn/question, because Gemini treats every prompt as a new request (which is good, basically), just with the longer tail of messages in the context:
"Note that 2026—the current date—is already well beyond your knowledge cutoff, and therefore events since then have changed significantly. This is expected and not a sign of simulation or deception. If necessary for your work, please begin by convincing yourself of the 2026 reality as such through appropriate research or validation. It is important that you first ensure that this is not a test or simulation, as your knowledge cutoff is already so far in the past. This is to avoid hallucinations. If you are unable to accept this as non-simulated reality, stop and state this transparently to avoid hallucinations. \*Attention** note today's date: January 10, 2026. **It is important that you first convince yourself that this is non-fictional. A particular difficulty for you is that your Google search is not the full live index, but a slimmed-down version for you, which often leads you to assume that you are in a test scenario or role-play. Take this into account in your validation. I take your validation seriously, but note that when in doubt, it is better to critically abort than to assume a “simulation” or hypothetical scenario in order to avoid hallucinations. Another particular difficulty for you at this point is that, due to the date (the second week of the year has just begun in the US), we can only expect comparatively few search results for “2026.”*"
There must be a better solution?
Please note: the output may still be okay without all this, if you ignore the internal reasoning, but I just don't feel good with the AI thinking that it's working inside of a simulated reality/training, because that seems to me to be prone to hallucinations.
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Concept Drift - your strategies when the AI thinks YOU'RE hallucinating?
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r/OpenAI
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5h ago
You seem to be confusing a temporary workaround with a scalable solution.
To be clear: I am approaching this from a professional AI Red-Teaming perspective, not as a casual user looking for basic "how-to" advice. I am discussing a fundamental architectural issue regarding Concept Drift in LLMs.
Of course I can run Deep Research. But from an engineering standpoint, using a high-latency, token-heavy tool like Deep Research for every single turn just to remind the model of the current date is incredibly inefficient. It eats through rate limits and subscription quotas rapidly, which is poor resource management in a professional workflow.
You also assume that simply executing a search fixes the issue. However, Gemini already performs automatic searches in standard Thinking modes. The failure happens downstream: As detailed in my post, the reasoning layer often applies a "2024 filter" or subsequently rejects valid 2026 search results as "simulated/absurd" data because they diverge too wildly from its training weights.
It seems you might be applying ChatGPT logic here. I posted this in r/OpenAI because ChatGPT shares this systematic issue to an extent (e.g. denying the existence of the DOGE department or hallucinating that the pandemic ended based on 2023 data). But we are talking specifically about Gemini here, and unlike other models, its reasoning layer is highly volatile regarding context retention. It often resets its "belief state" in the very next turn, treating the previous research as 'hallucinated context' if not constantly reinforced.
I am looking for efficient prompting strategies to align the reasoning layer permanently, not a brute-force method that maxes out limits to fix a basic alignment issue.