Prolific competitors and alternatives
As of Nov 14, 2026, Alion lists 10 companies most like Prolific: Terac, Collinear, Volga Partners, Turing, Encord, NewtonX, YO AI Labs, Labelbox, RWS Group and CloudFactory.
- Prolific itself has 27 open roles on Alion.
- Of them, RWS Group is hiring the most, with 91 open roles.
- CloudFactory has raised the most venture funding on record: $67M.
- Open roles at CloudFactory rose the most: from 17 on Oct 12, 2026 to 27 now.
Prolific and its competitors compared
Open roles are the postings Alion lists today; their change is shown only for career sites that state posting dates. Funding is the venture money on record. A dash means Alion holds no figure.
| Company | Open roles | Change | Raised | Last round | Lead investors | Employees | Headquarters | Main technologies | Hiring in |
|---|---|---|---|---|---|---|---|---|---|
Prolific
This company
|
27 | – | $48.6M | Venture round $16.6M2023 | – | 51-200 | London, United Kingdom | Python, Kubernetes, SQL | United Kingdom, United States, Mexico |
Terac
In common: Market Research, AI Training Data & Annotation · Python, JavaScript, TypeScript |
32 | – | – | – | – | 51-200 | San Francisco, United States | Reinforcement Learning, CI/CD, AI Agents | United States, Brazil, Afghanistan |
Collinear
In common: AI Training Data & Annotation · Python, JavaScript, TypeScript |
10 | – | – | – | – | 51-200 | San Francisco, United States | Python, CI/CD, AI Agents | United States, India |
Volga Partners
In common: AI Training Data & Annotation · Python, JavaScript, TypeScript |
20 | – | – | – | – | 51-200 | Kirkland, United States | Machine Learning, Edge AI, LLM | Pakistan |
Turing
In common: AI Training Data & Annotation · Python, JavaScript, TypeScript |
49 | – | – | – | – | 501-1000 | San Francisco, United States | AI Agents, Reinforcement Learning, Edge AI | United States, India, Brazil +2 more |
Encord
In common: AI Training Data & Annotation · Python, JavaScript, TypeScript · headquarters in United Kingdom |
36 | – | $60M | Series C $60M2026 | – | 201-500 | London, United Kingdom | Python, GCP, Kubernetes | United Kingdom, United States, India |
NewtonX
In common: Market Research · Python, JavaScript, TypeScript |
11 | – | $46M | Venture round $32M2021 | – | 51-200 | New York, United States | Python, SQL, GCP | United States, Colombia |
YO AI Labs
In common: AI Training Data & Annotation · Python, JavaScript, TypeScript |
32 | – | – | – | – | 51-200 | San Francisco, United States | Python, AI Agents, TypeScript | United States, Egypt, India |
Labelbox
In common: AI Training Data & Annotation · Python, JavaScript, TypeScript |
10 | – | $65M | Series C $40M2021 | – | 201-500 | San Francisco, United States | Databricks, Reinforcement Learning, LLM | United States, India |
RWS Group
In common: AI Training Data & Annotation · Python, JavaScript, TypeScript · headquarters in United Kingdom |
91 | – | – | – | – | 5000+ | Maidenhead, United Kingdom | Machine Learning, Speech Recognition, Windows | Singapore, India, Brazil +46 more |
CloudFactory
In common: AI Training Data & Annotation · Python, JavaScript, TypeScript · headquarters in United Kingdom |
27 | +59%since Oct 12, 2026 | $67M | Venture round $65M2019 | FTV Management Company, L.P. | 501-1000 | Reading, United Kingdom | Python, AWS, GCP | United States, United Kingdom, Germany +6 more |
How the list is made
The list comes from Alion's similar-companies engine, the same one AI agents query through the Alion MCP server. A company ranks higher when it shares more of Prolific's industry segments and is less spread over others, when its job postings name the same technologies, when it is headquartered in the same country and when its size is close. The list is rebuilt every week.
How to cite this page
These figures are published under a free licence. You may reuse them, including commercially, as long as you credit Alion and link back to this page.
Alion, "Prolific competitors and alternatives: 10 similar companies compared on hiring and funding", as of Nov 14, 2026. https://alion.io/company/prolific/competitors