A familiar northeast arrow (↗) on a software landing page prompted an investigation into whether AI coding models were making the symbol unusually common. Sampling roughly 100 newly created public web repositories per month found a sharp rise: about 4.6% of repos from November 2025 through March 2026 contained the character, compared with 14.5% from May through August and 18.1% from September through early November. The analysis then examined AI-attributed commits that added substantial UI code. Among Claude-credited commits, arrow use peaked at 9.7% with Opus 4.8, then generally declined; Opus 5.5 was near 2%. Codex-credited commits showed a stronger increase: none of the sampled early commits used the arrow, but the rate reached 26.2% in September and stayed around one quarter through November.
The findings suggest the author’s suspicion about OpenAI’s Astra model was partly right, but the pattern began earlier, around the release of GPT-5.6. A small review of links bearing arrows also found a difference in their use: 63% of Codex’s arrows pointed to internal pages, versus 33% of Claude’s, despite the symbol commonly indicating an external link. The investigation does not establish why models favor the character. Its evidence comes from public GitHub repositories and AI-attributed commits, with UI commits identified through keyword searches; it is therefore a limited sample, especially of AI-generated landing pages, rather than a measure of all web development.
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