Amazon to Shut Down Mechanical Turk After 21 Years of Service

Washington DC, United States Aug 27, 2026 ALN: Amazon is shutting down Mechanical Turk, or MTurk, after 21 years, ending one of the internet’s earliest marketplaces for invisible digital labor—as well as a platform that helped establish the human-data pipeline behind modern AI.

The company said Mechanical Turk will close on September 30 after an internal assessment. Amazon had already stopped accepting new customers on July 30. The service launched in 2005 and connected businesses and researchers with workers who completed small online jobs, known as “human intelligence tasks,” or HITs, that often paid just a few cents each.

A Marketplace for Work That Computers Couldn’t Do

Amazon founder Jeff Bezos had called MTurk “artificial artificial intelligence,” a nod to how the service relied on people to handle simple digital tasks that computers still struggle to do, such as labeling images, transcribing audio, and sorting data. The name itself came from the Mechanical Turk, an 18th-century chess-playing machine that appeared automated but secretly relied on a human operator. This historical reference highlights the ongoing tension between human and machine intelligence, a theme that has become increasingly relevant in today’s AI-driven world.

Over time, MTurk became part of the infrastructure for machine learning. Amazon still describes the platform as a way to collect and annotate large datasets, use human feedback to validate models, and retrain machine learning systems. At one point, the marketplace had more than 500,000 workers, according to Amazon. This vast pool of human labor enabled researchers and companies to gather the necessary data to train algorithms, which in turn contributed to the rapid advancements in AI technologies we see today.

The Human-AI Loop Got Stronger

The type of work that defined MTurk has increasingly moved toward automation. As artificial intelligence technologies have advanced, the demand for human labor in certain areas has diminished. At the same time, newer companies, including Scale AI, Mercor, and Prolific, have built businesses around sourcing human labor specifically for training advanced AI models. These companies often offer more specialized and potentially lucrative opportunities for workers compared to MTurk, which may have contributed to the decline of the platform.

Krista Pawloski, a data worker and organizer with the advocacy group Turkopticon, told CNBC that MTurk had been declining for years as Amazon invested fewer resources in the platform and workers migrated elsewhere. Pawloski began “turking” in 2008 while on maternity leave and transitioned to it full time in 2012. She described platforms like MTurk as a source of “meaningful income” for people who need flexible, remote work. This sentiment echoes the experiences of many workers who turned to MTurk for its flexibility, enabling them to balance other commitments while earning an income.

Then came a particularly circular development. A 2023 analysis cited by TechCrunch found that an estimated 33% to 46% of MTurk workers in the study were using large language models to complete tasks. A system designed to supply human judgment for computers was, increasingly, just relaying answers that machines had already generated. This phenomenon raises questions about the future of human labor in the context of AI, as the lines between human and machine contributions continue to blur.

Amazon has not publicly tied the shutdown directly to advances in AI. Its notice says only that the decision followed an assessment of its services. This lack of clear communication has led to speculation about the implications of the shutdown on the future of crowdsourced labor platforms and the workers who depend on them. The decision may reflect a broader trend in the tech industry, where companies are increasingly turning to automation and AI to streamline operations and reduce costs.

However, Amazon isn’t leaving the crowdsourced labor business entirely. Amazon Web Services (AWS) still offers SageMaker Ground Truth, its in-house data-labeling tool, as an alternative for customers who relied on MTurk. This shift indicates that while MTurk may no longer serve its original purpose, Amazon recognizes the ongoing need for data labeling and human input in machine learning processes. Some existing MTurk requesters, including insurance and travel companies, have continued using the platform right up to the shutdown notice, according to Pawloski. This suggests that there remains a demand for the type of work MTurk provided, albeit in a changing landscape where newer platforms may offer more competitive solutions.

The closure of MTurk also raises important questions about the future of gig economy platforms. As automation becomes more prevalent, the viability of platforms that rely on human labor for tasks that machines can increasingly handle comes into question. Workers who relied on MTurk for income may need to seek out new opportunities, potentially leading to a shift in the labor market dynamics. Advocacy groups like Turkopticon may play a crucial role in supporting these workers as they navigate the transition to new platforms or job opportunities.

In conclusion, the shutdown of Amazon Mechanical Turk marks the end of an era for a platform that not only provided income for countless workers but also played a significant role in the development of AI technologies. As the industry continues to evolve, the implications of this closure will likely resonate throughout the gig economy and the tech landscape for years to come.