@FinanceYF5: Reddit seems to be disappearing en masse from ChatGPT's information sources. Changes to the query expansion mechanism have had a significant impact. Over the past few days, Reddit has almost completely stopped appearing as a citation source in prompt responses.

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Reddit has largely disappeared from ChatGPT's information sources, with changes to the query expansion mechanism causing it to no longer appear in prompt response citations.

Reddit seems to be disappearing en masse from ChatGPT's information sources. Changes to the query expansion mechanism have had a significant impact. Over the past few days, Reddit has almost completely stopped appearing as a citation source in prompt responses. https://t.co/VB4oGIYt1V
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Cached at: 08/21/26, 11:15 PM

Reddit seems to be disappearing en masse from ChatGPT’s cited information sources.

This shift is largely driven by changes to query expansion mechanisms.

Over the past few days, Reddit has almost entirely vanished from the citation sources in prompt responses. https://t.co/VB4oGIYt1V

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@FinanceYF5: ChatGPT is reducing references to Reddit, but the real change might be: its search logic has changed. After August 14th, Reddit's citation rate dropped from 15% to near 0%, small websites from 66% to 32%; help centers and documentation rose from 2% to 32%, app marketplaces from 2% to 17%. Ch…

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ChatGPT is changing its search logic, reducing references to small websites like Reddit, and instead favoring more credible sources such as help centers, documentation, and app marketplaces.

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