Amazon is shutting the door on new users for Mechanical Turk. An announcement on the mturk.com website says the crowdsourcing service will close to new customers effective July 30, 2026. Existing users won’t be affected, but Amazon Web Services confirmed it has no plans to introduce new features.
“After careful consideration, we have made the decision to close new customer access to AWS Mechanical Turk,” the statement reads. The service is staying online for current users, but it’s very much on life support.
21 Years of Crowdsourced Human Labor
Mechanical Turk launched in 2005 as a marketplace where people earned small amounts of money to perform tasks that resisted full automation: completing CAPTCHAs, tagging images, identifying sentiment in text, transcribing audio. The name came from the 18th-century chess-playing automaton that was actually operated by a hidden human player, which was fitting for a service that blurred the line between human and machine intelligence.
At its peak, the platform was central to the AI training pipeline. Companies used Mechanical Turk workers to annotate millions of data points needed to train neural networks. Amazon even integrated it into SageMaker, its machine learning service, as a way for companies to crowdsource data labeling at scale.
The AI That Made It Obsolete
Irony has a long shelf life in tech. A 2023 analysis found that between 33% and 46% of workers on Mechanical Turk were using large language models to complete their tasks. Humans were using AI to do the work that was supposed to be done by humans to train AI. The snake was eating its own tail.
Now, AI models can annotate data, label images, classify text, and complete CAPTCHAs faster and cheaper than human workers. The specific tasks that made Mechanical Turk valuable in the first place are exactly the tasks that modern AI handles best.
The Ethical Debates That Never Resolved
Mechanical Turk was at the center of ongoing debates about crowdsourced labor ethics. Workers were paid pennies per task, often earning below minimum wage when accounting for the time spent. There was no benefits, no job security, and no consistent quality control.
The platform also played a small role in the Facebook-Cambridge Analytica scandal. Cambridge Analytica used Mechanical Turk workers to collect Facebook data through a personality quiz app, which became the basis for the political targeting operation that triggered a $5 billion FTC fine against Facebook.
What Happens to the Workers?
Amazon’s statement says existing users can continue using the service “as normal,” but the writing is on the wall. One Reddit user predicted that Amazon will eventually decide keeping the servers running is “a waste of time and resources” and pull the plug entirely.
The workers who relied on Mechanical Turk as a source of income, many of them in developing countries where even small payments had significant purchasing power, will need to find alternatives. Platforms like Appen, Toloka, and Scale AI still offer similar work, but the job pool is shrinking as AI models get better at the tasks humans used to do.
Mechanical Turk was a window into a specific moment in AI history, where human intelligence was the essential ingredient for machine learning. That moment is ending.
Frequently Asked Questions
Can existing Mechanical Turk workers still earn money?
Yes. Amazon confirmed that existing customers can continue using the service as normal. The closure only affects new customer signups. However, the pool of available tasks has been declining for years.
What alternatives exist for crowdsourced data labeling?
Platforms like Scale AI, Appen, Toloka, and Remotasks offer similar services. However, many of these are also incorporating AI into their workflows, reducing the demand for human workers.
Why is Amazon closing Mechanical Turk now?
Amazon didn’t provide a specific reason, but the platform has been in decline for several years. AI models can now perform most of the tasks that Mechanical Turk workers used to do, making the service less economically viable for both Amazon and its customers.
Was Mechanical Turk profitable for Amazon?
Mechanical Turk was never a major revenue driver for Amazon. It operated as part of AWS and was more of a utility service for AI and machine learning teams. The decision to close it to new users likely reflects declining usage rather than financial losses.
