The claim is bold. Here is the evidence. Here are the boundaries.
The receipt.
In 2025, researchers from the University of Maryland and Microsoft published the ONERULER benchmark.
What they tested: Long-context retrieval and aggregation tasks across 26 languages. They fed identical datasets to ChatGPT, Gemini, Llama, and DeepSeek. They measured precision. They measured accuracy over massive context windows.
What they found:
Polish ranked #1.
English ranked #6.
What it means: When the task required retrieving structured information from large contexts without error, Polish outperformed English by a meaningful margin.
The Polish Patent Office responded: “Humans have trouble with it, but not AI.”
The limits.
I don’t claim Polish is universally better for all AI tasks. Not exactly. Here is exactly what the research does and does not prove.
The scope was specific. ONERULER tested long-context retrieval. Not conversation. Not creative writing. Not general prompting. Precision tasks over large datasets.
The mechanism is structural. Polish grammar makes relationships explicit through case endings. English relies on word order and context. Over long context windows, English ambiguity accumulates noise. Polish explicitness preserves signal. This is a hypothesis consistent with the results, not a proven cause.
Learning Polish will not make your prompts magical. You will not get 20% better results tomorrow by knowing Polish. You do not need to prompt in Polish to get a good recipe.
What Polish does is train your mind to think with structural rigor. The same rigor machines prefer. The benefit is cognitive, not linguistic.
What I’m saying.
The ONERULER result is a foothold, not a guarantee.
It is evidence that structure matters. That explicitness matters. That the language you think in shapes how precisely you communicate with systems.
Valid Polish is built on that foothold. It teaches Polish grammar alongside JSON Schema because both systems enforce the same discipline: declare your relationships, validate your structure, tolerate no ambiguity.
I don’t promise magic. I offer a path.
Verify the research yourself. Then decide if polegramming is for you.