Best Appen Alternatives in 2026 for Workers & Customers
Appen’s revenue dropped from $270M in 2023 to $231M in 2025, and its stock trades at $1.19 as of 2026.1 For workers, task availability has shrunk, and compensation complaints have grown. For clients, service reliability concerns follow the financial decline.
We analyzed the top Appen alternatives by comparing worker review ratings from Trustpilot, crowd size, payment schedules, and publicly available company data.
The alternatives differ significantly depending on what you need from Appen. Browse by role:
Appen alternatives for workers
Alternatives | Worker ratings* | Payment schedule** | Pricing |
|---|---|---|---|
Clickworker | 4.4/5 out of 2,454 reviews | Weekly | $8-15/hour |
Amazon Mechanical Turk | 2/5 out of 57 reviews | Weekly | $2-8/hour |
Telus International | 1.7/5 out of 88 reviews | Monthly | $10-18/hour |
Sama | 3.5/5 out of 483 reviews | Monthly | Varies by location |
Lionbridge AI | 3.5/5 out of 869 reviews | Monthly | $11-15/hour |
* Data is from Trustpilot, as it primarily consists of worker reviews.
** Data gathered from worker reviews. In some cases, workers reported payment delays.
Detailed analysis of alternatives for workers
Clickworker (now part of LXT)
LXT acquired Clickworker in December 2024 and completed full platform integration on July 31, 2025.2 The combined platform now covers 150+ countries and 1,000+ language locales with 7 million+ contributors. For workers, the integration added a domain-expertise profile builder, 24/7 support, and a loyalty program none of which had existed before.
- Sign-up and onboarding: Free registration via desktop or mobile. Workers describe the process as straightforward. Qualification assessments are required for specific task types.
- Compensation: Weekly payments via Payoneer or PayPal. Some workers report actual payment taking up to 30 days despite the stated schedule. Estimated range: $8–15/hour.
Amazon Mechanical Turk
MTurk is a long-running crowdsourcing marketplace operated by AWS. Workers complete Human Intelligence Tasks (HITs), small, self-contained tasks posted by requesters, and are paid per completed assignment.
- Sign-up and onboarding: Workers report unexplained rejections during sign-up and limited support when issues arise. Some describe the qualification steps as unclear.
- Compensation: Requesters set the pay per task. Amazon charges 20% on worker pay plus an additional 20% on tasks with 10 or more assignments, and 5% extra for Master ‘s-qualified workers. Effective earnings frequently fall below $8/hour and sometimes below minimum wage. Weekly payments.
- Data quality note for clients: A study estimated that 33–46% of MTurk workers now use large language models when completing text production tasks.3 This is a material concern for any client using MTurk specifically for AI training data that requires genuine human responses.
TELUS Digital (formerly Telus International)
TELUS International rebranded to TELUS Digital in September 2024. On October 31, 2025, TELUS Corporation completed the privatization of TELUS Digital for approximately US$539 million. The company is no longer publicly traded and now operates as a wholly owned subsidiary of TELUS Corporation.4
- Sign-up and onboarding: Workers report that the onboarding process requires extensive personal information and multiple qualification tests. The process is described as more complex than that of competitors.
- Compensation: Monthly payment. Workers describe the system as confusing, with the allocated time per job frequently less than the task actually requires, reducing the effective hourly rate below the initially quoted rate. Estimated range: $10–18/hour when paid on time.
Sama
Sama is a social enterprise founded to provide employment to people in low-income communities. It operates under the Sama Group nonprofit structure and focuses on hiring from underserved regions.
- Sign-up and onboarding: Training is provided for basic computer skills. Assessments cover logical reasoning, image and video processing. Hiring is targeted at specific geographic communities rather than open global signup.
- Compensation: Monthly payment. Positions are described as “living wage” for local markets, with medical insurance, dental coverage, and maternity benefits included. Pay varies significantly by country.
Lionbridge AI
One of the older players in this space was founded in 1996. Employs 6,000+ people across 26 countries and covers a wide range of language and annotation tasks.
- Sign-up and onboarding: Qualification tests can take 10+ hours and are unpaid. Language and skill certifications are required. Non-US workers need to submit a W8-BEN form. Workers describe the process as lengthy but navigable.
- Compensation: Monthly payment via PayPal or Payoneer. Project rates range from $11–15/hour. Many projects have a 20-hour weekly cap.
Appen alternatives for customers
* The data is based on B2B review platforms.
Companies are ranked by the number of reviews, and the table is created from publicly accessible, verifiable data.
Appen review
Appen offers data collection and annotation services across the AI project lifecycle using a crowdsourcing model. Their data supports computer vision, facial recognition, voice recognition, and general machine learning development.
Services: Crowdsourced and managed data collection across image, video, audio, and text; data annotation and model evaluation.
Appen’s services/offerings
- The data collection service is based on either crowdsourcing or a managed service model.
- Data collection of all data types (image, video, audio, text)
- Data annotation (audio, video, text, image annotation) and model evaluation services
Appen evaluation
From the client perspective
Financial position: Appen’s trailing twelve-month revenue stands at $231M as of December 2025, down from $270M in 2023. Stock price as of March 12, 2026 is $1.19 with a market cap of $341M.
LXT completed its integration of Clickworker on July 31, 2025, creating a single platform for managed and self-service AI data solutions. 5https://www.lxt.ai/blog/lxt-completes-integration-of-clickworker-to-deliver-single-platformfor-industry-leading-ai-data-solutions/" aria-label="5">5 The unified platform covers 150+ countries and 1,000+ language locales with 7 million+ contributors, the largest crowd among the vendors covered here.- Services: Data collection and annotation across text, image, video, audio, and speech; custom model fine-tuning; RLHF and prompt creation; rating and ranking; SEO content and web research.
- Pricing: Depends on whether you use the self-service platform (lower cost, client-managed) or the fully managed model, where LXT provides project management.
- What clients report: Crowd is described as reliable, and the platform as easy to use. Some clients find image annotation pricing high relative to alternatives.
LXT publishes demographic distribution, gender breakdown, education levels, and language coverage for its crowd, a level of transparency that Appen does not currently match.
MTurk is a self-service marketplace where you post tasks and workers self-select into them. It suits high-volume, low-complexity tasks at low cost.
- Services: Data collection, annotation and labeling, surveys, content moderation, and general microtask work.
- Pricing: You set the pay per task. Amazon charges 20% on worker pay, plus 20% on tasks with 10+ assignments, plus 5% for Master ‘s-qualified workers.
- What clients report: Scalable for large volumes. Less suitable for tasks requiring specialist knowledge or precise demographic targeting. Communication with workers is difficult to manage. Quality varies, and the LLM contamination issue noted above is a real concern for text-based AI training tasks.
The active crowd size is estimated at approximately 100,000 workers, despite the platform citing 500,000+ registered accounts.6
You may want to consider alternatives to Amazon Mechanical Turk due to the drawbacks identified in customer reviews.
TELUS Digital is the AI data and digital services arm of TELUS Corporation, taken private in October 2025 following a US$539M acquisition. 7 Its contributor network covers 500+ languages and dialects, which is broader than most competitors.
- Services: Data collection, annotation, and enrichment; content summarization and processing; multilingual dataset creation.
- Pricing: Not publicly available. Client reviews consistently describe TELUS Digital as more expensive than alternatives, partly due to its enterprise focus and onboarding overhead.
- What clients report: Diverse contributor network with strong language coverage. Service can be slow for high-volume, fast-turnaround projects, and onboarding is lengthy. Best suited for large enterprises rather than smaller or time-sensitive projects.
You can also check our data-driven list of data collection companies to find the best option for your business needs.
FAQs
The crowdsourced data market is under structural pressure from two directions in 2026. AI automation has reduced demand for routine microtasks, shrinking task availability on lower-tier platforms. At the same time, LLM-generated responses are contaminating data collected through open platforms — a problem that affects data quality for clients trying to build genuinely human-labeled training sets.
These dynamics make vendor selection more consequential than it was two or three years ago. The platforms with stronger identity verification, compensation practices, and crowd management are better positioned to deliver reliable data, but at a higher cost. Open marketplaces like MTurk remain useful for high-volume, low-stakes tasks where some output noise is acceptable.
Appen’s revenue has declined from $270M in 2023 to $231M by end of 2025, and service reliability concerns have followed. Over 80% of its revenue is concentrated among its top five clients, which reduces its incentive to prioritize smaller buyers. These factors, combined with worker compensation complaints, push many organizations to evaluate alternatives before committing.
Crowd size and geographic coverage determine whether the platform can handle the language and data variety your project requires. Pricing model matters too managed services cost more but reduce project management overhead. For AI training data specifically, the vendor’s approach to quality control and identity verification is now more important than it was, given documented LLM contamination issues on open platforms.
Reference Links
Cem's work has been cited by leading global publications including Business Insider, Forbes, Washington Post, global firms like Deloitte, HPE and NGOs like World Economic Forum and supranational organizations like European Commission. You can see more reputable companies and resources that referenced AIMultiple.
Throughout his career, Cem served as a tech consultant, tech buyer and tech entrepreneur. He advised enterprises on their technology decisions at McKinsey & Company and Altman Solon for more than a decade. He also published a McKinsey report on digitalization.
He led technology strategy and procurement of a telco while reporting to the CEO. He has also led commercial growth of deep tech company Hypatos that reached a 7 digit annual recurring revenue and a 9 digit valuation from 0 within 2 years. Cem's work in Hypatos was covered by leading technology publications like TechCrunch and Business Insider.
Cem regularly speaks at international technology conferences. He graduated from Bogazici University as a computer engineer and holds an MBA from Columbia Business School.
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