Offers first-hand context windowThe maximum amount of text a model can consider at once — its working memory for the current conversation or task.Full definition → on how OpenAI built GPT-5 as a hybrid model and the open weightsA model whose trained parameters are published for anyone to download and run — unlike API-only models you can access but never possess.Full definition → gpt-oss release, relevant to engineers choosing models.
Terms in this piece · Glossary
open weights — A model whose trained parameters are published for anyone to download and run — unlike API-only models you can access but never possess.
context window — The maximum amount of text a model can consider at once — its working memory for the current conversation or task.
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