The Humans Who Trained AI Just Lost Their Jobs to It
220 words • 2 min readMechanical Turk spent 21 years selling human intelligence to machines. This month, the machines stopped buying.
The clearest AI casualty is rarely a dramatic shutdown. Sometimes it is a quiet marketplace outliving its purpose — the place that taught the models, closed once the models learned.
Amazon Mechanical Turk (21 years, closed September 30)
Amazon is shutting down Mechanical Turk on September 30, ending a 21-year marketplace that paid people to do the small tasks machines could not: transcribe audio, sort images, label data. Jeff Bezos called it "artificial artificial intelligence" — humans standing in for software that did not exist yet.
That stand-in is no longer needed. Models now perform the same labeling and transcription directly, and a new tier of data companies — Scale AI, Mercor, Prolific — took the high-quality training work with stricter vetting and better task design. The shutdown takes two AWS companions with it, SageMaker Ground Truth and Amazon Augmented AI, retiring the whole human-in-the-loop data pipeline at once.
It is a neat closing of the loop. The work that trained the models is now the work the models do, and the platform that supplied it has nothing left to sell.
Status: 90 verified records | Trend: the human data pipeline retires as models absorb its work Source: KilledByAI Live Registry