ChatGPT may have the smallest context window among major chat models, test finds
JeremyNguyenPhD · x · 2026-10-13
A researcher pasted the same full paper plus a query into ChatGPT, Claude, Gemini, and Grok. Only ChatGPT rejected the prompt as too long, while Claude, Gemini, and Grok all processed it — with Gemini and Grok delivering detailed analysis. The author questions whether ChatGPT has the smallest usable context window among major chat models.
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