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Original · left

Codex (book)

First in use: ancient / pre-modern
Duplicate · right

OpenAI Codex

First in use: c. 2021

Codex / Codex (book) / OpenAI Codex

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Canonical todayMeasuring…
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Duplicate share · 12 mo—
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Colour keyGrey · original meaningGreen · duplicate meaningAmber · contested (40–60%)How colours work

Bound manuscripts vs. code generation.

Which meaning of Codex is the original, and which one is the duplicate riding on its name? Codex (book) came first (ancient / pre-modern). OpenAI Codex arrived in 2021. The data below shows which one owns the word now.

Wikipedia pageviews since 2015

Codex (book)OpenAI Codex
English Wikipedia pageviews since July 2015 load here.

Duplicate's share of attention

Green line = duplicate's % · above 60 it owns the word · below 40 the original does

Share-of-attention line loads here.

The case for each meaning

Sourced definitions, usage stats and quotes

Original · ancient / pre-modern

Codex (book)

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Duplicate · c. 2021

OpenAI Codex

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More duplicated terms

AI & machine learning