Data Collection For AI & Machine Learning

At Kotwel, we provide several different data collection solutions and services to best suit your specific AI program needs. As a global leader in our field, our clients benefit from our capability to quickly deliver large volumes of high-quality AI Training Data across multiple data types, including image, video, speech, audio, and text.

Unique methodology for collecting custom data

High-quality and custom datasets

Full support for client satisfaction

Our unique methodology for collecting custom data to match

Any specification.

Any demographic.

Any scenario.

Top-Quality Voice Data Collection Service For AI/ML Training | Kotwel At Kotwel, we offer multilingual, diverse and fast voice data collection service for AI-powered speech recognition.

Speech Data Collection


Video Data Collection


Image Data Collection


Handwritten Data Collection

Our Data Collection Solutions

We are committed to total customer satisfaction through providing consistently high-quality data & services to our clients worldwide.

Voice Data Collection

Voice data collection (also known as speech data collection or audio data collection) is an important part of AI/Machine Learning. 


At Kotwel, we specialize in collecting voice and audio data in over 75 languages to support your multilingual AI systems.

Image Data Collection Service

We collect the custom images you need to train your unique AI-powered product.


Kotwel's approach to collecting custom image data leverages our expertise in unique scenario setups, dynamic project management, and a team of annotation experts specializing in gestural and facial tagging.

Video Data Collection Services

Whether you need short selfie videos with different accessories and lighting environments, traffic videos, or conversational videos to enhance AI technology for video recognition, we're always available to fulfill your requests.

We provide video data collection services in 75+ countries. For select countries where we have local advantages, such as the United States, Germany, Japan and Vietnam, we are capable of efficiently collecting a large volume of videos within a short timeframe.

The Right Place Where You’ll Get High-Quality Data Collection Services For All Your Industry Needs.

Find out how we can help accelerate your business growth

Kotwel's Workflow

1. Project set-up

Our team will work with you to establish priorities and define deliverables, developing a custom solution based on your project objectives and timeline.

2. Production

We kick off the project and keep you regularly updated on the progress. Our dedicated manager will be in contact to answer all your questions and assist you until the project is completed.

3. Delivery

Our project management team checks, packages, and formats the deliverables before sending them to you for final approval.

4. Post-completion service

Our company aims to ensure your satisfaction with our delivery. We are willing to provide continued support even after the project is complete.

Choose Kotwel, ChooseHigh-QualityData SecurityFast DeliveryCost-effective Solution

High-quality Services & Solutions

At Kotwel, excellence is our top priority. Our dedicated team follows a strict quality process to ensure that our services consistently meet and exceed our clients' quality expectations.

Scalable Solutions with Rapid Turnaround Time

Businesses nowadays require reliable and fast solutions to stay competitive. That's why we offer scalable solutions with a rapid turnaround time to  help our clients adapt to changing demands and stay ahead in the market.

Comprehensive Data Security Measures

We prioritize data security and privacy with comprehensive measures to protect client information. It is an ongoing process to maintain confidentiality and integrity at Kotwel.

Personalized Pricing to Meet Your Needs

We work closely with our clients to understand their budget and requirements to create tailored pricing plans. Our goal is to provide our clients with complete transparency so that they know exactly what they are paying for and why.

Our Clients Trust Us

Client Testimonials

How clients talk about their experience with Kotwel

Steven A

Steven A.

Tech Company

Back when our company was scaling up, we needed to outsource our data processing. It was our first time seeking partners, so we proceeded cautiously. We reached out to over 10 companies, shortlisted 4, and had them compete by completing a full-scope data task on our application. Despite Kotwel having a slightly higher price, we still chose them for their superior quality, transparent communication, and professionalism. No regrets there! We've been extremely satisfied with Kotwel, not only on our first project but also on all the follow-ups. Can't recommend them enough – they've been a game-changer for us!

Goh T

Goh T.

Robotics Company

We’ve worked with Kotwel on three projects so far, and we are amazed by the precision and consistent quality they deliver. Their expertise and attention to detail in annotating diverse datasets have significantly enhanced the performance of our machine learning models. Another plus point is that the smooth collaboration with our internal team has made the annotation process efficient, stress-free, and enjoyable.

Maximilian S

Maximilian S.

Research Center

I personally commend Kotwel for their dedication to both quality and social responsibility. Knowing that our research projects held a not-for-profit purpose, they offered us a not-for-profit price and went the extra mile to support us in any way they could.

Kerwin K

Kerwin K.

AgriTech Company

We hesitated initially to contact Kotwel because of our previous negative experiences with other data providers, especially regarding quality and communication. However, Kotwel quickly proved themselves. As we dived into projects with Kotwel, our doubts turned into confidence. The consistently high-quality deliverables and their proactive communication style fostered a trusting relationship. It was a refreshing change that solidified our decision to choose Kotwel as our partner.

Drive your projects forward faster with less effort