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codex.
ancient manuscript generally taking the form of the modern book: bound leaves of paper or parchment with information inscribed on both faces, attached at a center fold. Precursor of the modern book.
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OpenAI adds Codex and models to Google Cloud platform
GPT-6 Astra, Sol, Luna and Codex enter Google Cloud Model Garden; buyers can draw down GCP commitments while OpenAI says Microsoft stays primary partner.
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About codex
The codex was the historical ancestor format of the modern book. Technically, the vast majority of modern books use the codex format, of a stack of pages bound at one edge. However, the term codex is usually reserved for older manuscript books, which mostly used sheets of vellum, parchment, or papyrus, rather than paper.
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