Abstract

DE SCHRYVER, Gilles-Maurice. Customised GPTs for Lexicography. Lexikos [online]. 2025, vol.35, n.2, pp.397-422. ISSN 2224-0039.  https://doi.org/10.5788/35-2-2104.

About a year and a half ago, lexicographers realised that the enthusiasm they had when using ChatGPT-3.5 for English lexicography, could not be carried over to other languages, not even big ones like Portuguese. A year ago, the lexicographic community was made aware that ChatGPT-3.5 could not be used at all for small languages, and especially not for oral ones like Lusoga. In mid-2025, we notice that the models have improved drastically. Both Gemini-2.5 and especially GPT-4o perform miracles on languages like Portuguese, and for undocumented languages like Lusoga, customising GPT-4o by feeding it corpora as well as entire dictionaries is a major step forward, down to tackling neologisms. We are not yet there in full but moving forward.

Keywords : Generative Artificial Intelligence (GENAI); Large Language Models (LLMS); Generative Pre-trained Transformer (GPT); Customised GPTS; Lexicography; Dictionaries; Lexicographers; Portuguese; Lusoga.

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