AI teams in the US, Europe, Japan, Korea and Australia increasingly send annotation work to Vietnam. The country offers a large technical workforce, competitive rates and a time zone that overlaps with both Asia-Pacific and European working hours. The market has grown quickly, and providers now range from 1,000-person BPO firms to focused specialist teams.
A note on transparency: this list is published by Smart Annotahub, so we appear first. The other profiles are based on each company’s public information at the time of writing. Always run a pilot before you commit.
1. Smart Annotahub
A managed annotation company based in Ha Noi, focused on computer vision, 3D point cloud, geospatial, text and audio data. All work is done by an in-house team with dedicated QA leads, and every engagement starts with a free pilot on the client’s own data.
- Best for: perception, robotics and geospatial teams that need complex labels and direct contact with the people doing the work
2. DIGI-TEXX Vietnam
A German-owned BPO company operating in Vietnam since 2003, with a large full-time workforce. Its roots are in data entry, OCR and document processing, and it now also offers annotation for computer vision, NLP and document AI.
- Best for: document-heavy and enterprise projects that need a long-established BPO partner
3. LTS Global Digital Services
Founded in 2016 in Ha Noi as part of LTS Group, offering data annotation alongside RPA and other BPO services. It publicly lists ISO 27001 and ISO 9001 certifications and has won Vietnamese industry awards for data annotation.
- Best for: buyers who want formal certifications and a broad service mix
4. SIBAI
A specialist data labeling company with a team of around 200 annotators, working across multiple platforms and content types.
- Best for: mid-size image and text projects that need flexible capacity
5. MP BPO
A Ha Noi–based BPO provider with Vietnam–Japan joint-venture roots and an annotation team of more than 100, known for multi-level double-check QA. Services include image, video, dialogue and ID document annotation.
- Best for: Japanese-market clients and document or dialogue annotation
6. Penguins Group
A Vietnam-based outsourcing company that positions itself specifically around AI data annotation for international clients, rather than general IT outsourcing.
- Best for: smaller teams looking for a focused annotation vendor
How to Choose Between Them
- Specialization. A strong document-processing BPO is not automatically strong at LiDAR cuboids or pose keypoints. Ask for work samples in your exact modality
- Workforce model. In-house employees, contractors and crowds behave differently on long projects. Ask who will actually label your data
- QA you can see. Look for accuracy targets in the contract, overlap checks and batch-level QA reports
- Security. Ask about NDAs, access control, device policies and certifications, and where your data will be stored
- Tools. Confirm they can work in your platform, such as CVAT, Label Studio, Labelbox or an in-house tool
- Communication. Named project managers, a shared channel and English-speaking leads matter more than a low unit price
The best vendor on paper is the one that performs best on your own pilot data. Test two or three before you sign.
About Smart Annotahub
Smart Annotahub is a managed data annotation company based in Ha Noi, Viet Nam. Our in-house annotators, QA leads and project managers turn raw image, video, 3D, geospatial, text and audio data into training-ready datasets for teams building computer vision, robotics and language AI. Every project starts with a free pilot, runs on your guidelines and tools, and ships with multi-stage quality checks.
Our Services
Frequently Asked Questions
How does the free pilot work?
Send us a sample of your data and your guidelines. We annotate it at no cost, report accuracy and turnaround, and return a precise quote, usually within a few working days.
How do you ensure annotation quality?
Every batch passes annotator self-checks, peer review and a dedicated QA lead. We agree accuracy targets up front and share QA reports with each delivery.
Can you work in our annotation tool?
Yes. Our team works in your platform or ours and delivers in the formats your pipeline expects, such as COCO, YOLO, Pascal VOC or custom JSON.
How is my data kept secure?
All work is done by our in-house team under NDA, with role-based access and no data leaving approved environments. See our Data Privacy Notice for details.
How is pricing calculated?
Per object, per hour or per project, depending on the task. See Pricing for reference rates, or request a pilot for an exact quote.
Want to see the difference on your own data?
Request Free Pilot
