AI data annotation is the process of labelling raw data, such as images, text, audio and video, so that machine-learning models can learn to recognise patterns from it. Kenya has become a significant location in the global AI data supply chain, home to established providers and a large pool of young, English-speaking workers. This guide explains why UK firms use Kenya for annotation, who the established players are, how worker wellbeing is being addressed, and the compliance you must put in place before sending data.
Key Facts
| Metric | Value |
|---|---|
| Established providers | Sama (formerly Samasource), CloudFactory |
| Training | CCI Global after-school AI training; Zalego Academy |
| Worker advocacy | Data Labelers Association (DLA) |
| University graduates (2024) | 123,366 (+24% on 2023) |
| Computing/ICT graduates (2024) | 8,627 |
| ICT graduates per year | 10,000+ |
| English proficiency (EF EPI 2025) | Rank 19, High band |
| B2-level English speakers | 642,000 (3rd largest in Africa) |
| Workforce under 35 | 87% |
| Data-protection law | Data Protection Act 2019 (GDPR-aligned), ODPC |
| UK transfer mechanism | UK IDTA + Transfer Risk Assessment |
| Time zone vs UK | GMT+3, 5-6 hours overlap |
Key terms
- Data annotation
- Labelling raw data so that supervised machine-learning models can be trained on it, covering bounding boxes on images, text classification, transcription and similar tasks.
- Human-in-the-loop
- A workflow in which people review, correct or validate model outputs, keeping human judgement inside an otherwise automated AI pipeline.
Why Kenya for AI data annotation
Answer: Kenya combines a large, young, English-speaking workforce, established annotation providers and UK-hours overlap, making it a natural location in the AI data supply chain.
Kenya produced 123,366 university graduates in 2024, up 24% on the previous year, including more than 8,627 in computing and ICT and over 10,000 ICT graduates annually across all routes. With 87% of the workforce under 35 and 642,000 B2-level English speakers, the country offers both scale and the language ability annotation projects demand. English is the official language under Article 7 of the Constitution, and Kenya ranks 19th globally in the EF EPI 2025, in the High band. The 5-6 hour overlap with the UK working day, with no daylight saving, means project leads and reviewers can coordinate in real time. See the Kenya talent hub and Kenya digital economy overviews for context.
Established providers and the supply chain
Answer: Sama and CloudFactory are the established data-annotation and content-moderation employers in Kenya, supported by training initiatives from CCI Global and Zalego Academy.
Sama, formerly Samasource, and CloudFactory are major data-annotation and content-moderation employers in Kenya and form part of the global AI data supply chain that trains commercial machine-learning systems. On the skills pipeline, CCI Global runs after-school AI training and Zalego Academy provides specialist training, both feeding the talent pool that providers draw on. UK firms typically engage through a provider rather than building their own operation, which is why understanding the Kenya BPO hub and related human-in-the-loop AI services matters when scoping a project.
Worker wellbeing and ethics
Answer: Worker wellbeing is a live issue in the sector, and UK firms should treat fair pay and mental-health support as a due-diligence and contractual requirement.
Data labelling and content review can expose workers to repetitive or distressing material, and the sector has faced scrutiny over wellbeing. A Data Labelers Association (DLA) has formed to advocate fair wages and mental-health support for workers. For UK buyers, this means treating wellbeing seriously: ask providers about pay levels, rotation and counselling support, and write wellbeing expectations into contracts. Responsible sourcing protects workers and reduces reputational and continuity risk. Where the work involves moderation of harmful material, the considerations in our content moderation in Kenya guide apply directly.
Cost and compliance
Answer: Annotation work in Kenya is delivered at competitive BPO rates, but UK firms must put the UK IDTA and a Transfer Risk Assessment in place for any personal data.
Kenyan BPO work is typically delivered at roughly USD 7-15 per hour, against onshore UK rates of USD 40-60 or more, and a data annotation specialist earns a typical KES 55,000 a month (range KES 30,000 to KES 120,000), about USD 424. On a fully-loaded per-seat basis, KenInvest puts a Kenyan seat at USD 870-1,160 a month, against USD 4,920-6,890 in the US, USD 3,770-5,290 in the UK, USD 3,410-4,780 in Europe and USD 3,950-5,540 in Australia, making Kenya 60-70% lower than the US, Europe and Australia (17-59% lower than South Africa), per KenInvest. The Kenya outsourcing rates guide gives the wider picture. On compliance, Kenya has the Data Protection Act 2019, aligned with GDPR and overseen by the ODPC, but it holds no UK adequacy decision. Personal data sent for annotation therefore requires the UK International Data Transfer Agreement supported by a Transfer Risk Assessment, as covered in the IDTA for Kenya and UK GDPR outsourcing guides.
Key Takeaways
- Kenya is an established location in the AI data supply chain, with Sama and CloudFactory among the major providers.
- A young, English-speaking workforce of 123,366 new graduates in 2024 and UK-hours overlap support annotation at scale.
- Worker wellbeing is a serious issue; the Data Labelers Association advocates fair pay and mental-health support, and buyers should require it.
- Personal data sent for annotation needs the UK IDTA and a Transfer Risk Assessment, as Kenya lacks UK adequacy.
Looking for a Kenya outsourcing partner?
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Frequently Asked Questions
What is AI data annotation and why is Kenya a hub for it?
AI data annotation is the labelling of images, text, audio and video so machine-learning models can learn from them. Kenya is a hub because it has a young, English-speaking workforce, established providers such as Sama and CloudFactory, and a 5-6 hour overlap with the UK working day.
Which companies do data annotation in Kenya?
Sama (formerly Samasource) and CloudFactory are major data-annotation and content-moderation employers in Kenya and part of the global AI data supply chain. CCI Global also runs after-school AI training, and Zalego Academy provides specialist training.
How is worker wellbeing handled in Kenyan data annotation?
Worker wellbeing is an active issue in the sector. A Data Labelers Association has formed to advocate fair wages and mental-health support, and UK firms should treat wellbeing as a contractual and due-diligence requirement, especially for sensitive content.
What data-protection rules apply to AI annotation work sent to Kenya?
Kenya has the Data Protection Act 2019, aligned with GDPR and overseen by the ODPC, but holds no UK adequacy decision. UK firms must use the UK International Data Transfer Agreement with a Transfer Risk Assessment for personal data sent for annotation.
Sources & References
- Kenya National Bureau of Statistics (KNBS), “Economic Survey 2025,” accessed 2026-06-13. https://www.knbs.or.ke/
- EF Education First, “EF English Proficiency Index 2025,” accessed 2026-06-13. https://www.ef.com/epi/
- Office of the Data Protection Commissioner (ODPC), Kenya, accessed 2026-06-13. https://www.odpc.go.ke/
- UK Information Commissioner’s Office (ICO), International Data Transfer Agreement, accessed 2026-06-13. https://ico.org.uk/for-organisations/uk-gdpr-guidance-and-resources/international-transfers/
- Workmate, “Global Outsourcing Rates by Country 2025,” accessed 2026-06-13. https://www.workmatepro.com/global-outsourcing-rates-by-country-2025/
- Kenya Investment Authority (KenInvest), BPO sector pack (2025), accessed 2026-06-13. https://www.investkenya.go.ke/
Published by Outsourcing.ke.
Further Reading
- Human-in-the-Loop AI — annotation, validation and review services
- Content Moderation in Kenya — trust and safety with worker wellbeing
- Kenya BPO Hub — the wider outsourcing landscape
- Employer of Record Kenya — EOR services for UK companies expanding to Kenya