Amazon to End New Customer Sign-Ups for Mechanical Turk After July 30

Amazon’s Mechanical Turk platform may be entering its final chapter.

A notice published on the Mechanical Turk website states that beginning July 30, 2026, the crowdsourcing platform will no longer accept new customers. According to Amazon Web Services (AWS), the decision followed “careful consideration.” The company added that existing customers will continue to use the service as usual and that AWS will continue investing in Mechanical Turk’s security and service availability. However, it has no plans to introduce any new features.

While Amazon is not shutting the platform down entirely, the announcement suggests that Mechanical Turk is now operating in maintenance mode with no plans for future expansion.

Originally introduced in 2005, Mechanical Turk created an online marketplace where businesses could pay workers small amounts to complete simple tasks that were difficult to automate completely. These assignments included jobs such as solving CAPTCHA challenges, identifying objects in images, or determining the basic sentiment of written text.

During its peak years, the platform became the focus of ongoing debates surrounding the ethics of crowdsourced labour. It also played a minor role during the early stages of the Facebook-Cambridge Analytica controversy.

Starting in 2018, Amazon increasingly positioned Mechanical Turk as a tool for businesses that need human workers to label and annotate datasets for training neural networks via its SageMaker artificial intelligence platform.

Mechanical Turk also earned a reputation as the hidden workforce behind certain AI products marketed as fully automated, even though many of those services still relied on people completing tasks behind the scenes. The comparison was particularly fitting because the original 18th-century Mechanical Turk chess machine was itself a famous illusion, secretly operated by a concealed human chess player rather than an actual machine.

As artificial intelligence evolved, the relationship between Mechanical Turk and AI became even more complex. A study published in 2023 estimated that between 33% and 46% of workers on the platform were themselves using large language models to complete assigned tasks. That finding raised concerns about the quality and reliability of annotated training data and prompted questions about whether human workers were still necessary for many of these jobs.

Following Amazon’s announcement this week, discussion quickly spread across Reddit. One user argued that the platform had effectively “died years ago,” claiming that both researchers and workers had gradually abandoned it due to increasing bot activity and fraudulent behaviour. The same user predicted that Amazon could eventually determine that maintaining the Mechanical Turk infrastructure is no longer worthwhile and decide to shut the service down completely.