What is AI slop?
Merriam-Webster made it the 2025 Word of the Year. Here is the actual definition, where the word came from, and what separates slop from AI-assisted work that is simply fine.
Slop is low-quality digital content produced in bulk by AI. That is not a vibe: it is the dictionary definition.
Merriam-Webster named it the 2025 Word of the Year, defining it as “digital content of low quality that is produced usually in quantity by means of artificial intelligence.” The Economist picked the same word independently.
Where the word comes from
Slop is old. It turns up in the 1700s meaning soft mud, shifts in the 1800s to food waste, the stuff fed to pigs, and generalises to mean a product of little or no value.
The metaphor is doing real work. Slop is not poison. It is not dangerous. It is filler, produced cheaply, in volume, for something that does not care about quality. Applying it to AI content was not a coinage so much as a recognition.
Merriam-Webster noted the tone it carries: “less fearful, more mocking” than the rest of the AI vocabulary. That is why it caught on. It is the first term in this whole discourse that laughs.
The three conditions
Not everything made with AI is slop. Three things have to be true at once:
Volume. Slop is a quantity problem. One generated image is a picture. Four hundred a day aimed at an engagement algorithm is slop.
Indifference. Nobody checked. Nobody read it. The thing was published without anyone forming an opinion about whether it was any good.
Displacement. It occupies space something else would have filled, a search result, a feed slot, a shelf, a page.
Miss any one and you have something else. Careful AI-assisted work is not slop. A single terrible generated image is just a bad image. Slop is the industrial version.
What it looks like in the wild
Feed filler. Images engineered for engagement rather than for looking at, sentimental, uncanny, and produced by the thousand.
Search-result padding. Articles that exist to rank rather than to inform. Graphite’s analysis of English-language articles found the AI-generated share rose from 2.2% in January 2020 to 51.7% by May 2025, first passing human-written output in late 2024, and then plateauing at roughly half. That plateau matters: the flood is real, the takeover is not.
Marketplace listings. Generated book covers, descriptions and entire titles, published because listing costs nothing.
Promotional material nobody looked at. The Glasgow Wonka event of February 2024 advertised itself with AI images and AI copy containing invented words, “cartchy tuns”, “a pasadise of sweet teats”. Nobody proofread it. Families arrived to a nearly empty warehouse and police were called.
Why “slop” is the right word
Earlier terms all failed for the same reason: they were about provenance. “AI-generated” describes how a thing was made and implies nothing about whether it is any good, plenty of AI-assisted work is excellent.
Slop is a quality judgement, not a provenance one. It names the thing people are actually annoyed about, which was never the technology. It was the indifference.
Which is also the useful test. Not “was AI involved?” but: did anyone care how this turned out?