Amazon's Mechanical Turk is closing its doors to new users

Amazon is shutting Mechanical Turk to new customers on July 30, 2026. The platform, which paid people small amounts to complete tasks like image labeling, content moderation, and sentiment analysis, launched back in 2005. Existing users keep access for now, but AWS has quietly added MTurk to its "Services in Maintenance" list — meaning no new features, just upkeep.

Twenty years of human clicks

Mechanical Turk made its name by outsourcing tasks that computers couldn't handle reliably — solving CAPTCHAs, transcribing audio, flagging offensive content. In 2018, Amazon repositioned it as a data-labeling tool for AI model training, folding it into the SageMaker ecosystem. For a while, it was a go-to resource for researchers and companies that needed cheap, fast human annotation.

The irony is that AI may have killed it. A 2023 study cited by TechCrunch found that between 33% and 46% of MTurk workers were using large language models to complete the very tasks they were being paid to do as humans. That data quality problem undercuts the entire premise of the platform — if workers are just running tasks through ChatGPT, the "human" label on the resulting data is meaningless.

The market moved on

Amazon's own SageMaker Ground Truth service offers a more automated, integrated alternative for AI data labeling. Meanwhile, The Register confirms AWS gave no detailed explanation for the retirement — the company cited only "careful consideration." Research suggests LLMs can now handle annotation tasks at a fraction of the cost of human crowdsourcing, making platforms like MTurk harder to justify commercially.

What happens next

Amazon says it will keep investing in security and availability for existing users, but the maintenance-mode status signals the platform has no real future. Users on Reddit are already speculating that a full shutdown follows eventually. For researchers or businesses still relying on MTurk-style human annotation, the window to find alternatives — whether SageMaker Ground Truth, Scale AI, or other labeling services — is open now, not later.

Mechanical Turk was, in many ways, a product of a specific moment in tech: the years when AI needed vast amounts of human-labeled data and cheap crowdsourcing filled that gap. That moment has passed.