Top Audio Annotation Companies
Audio annotation companies provide essential services for training voice-enabled AI systems, including tasks like speech-to-text, speaker identification, emotion tagging, and sound classification. These audio annotation services help improve the performance of virtual assistants, transcription software, and conversational AI tools. A reliable provider combines linguistic accuracy with scalable workflows to handle large datasets efficiently across various languages and accents.
At Goodfirms, explore top audio annotation companies trusted for their quality, speed, and domain expertise—ideal partners to help you build smarter, voice-powered applications across industries like healthcare, customer service, and legal tech. Explore other data annotation services, such as text and video annotation.
Here are the Best Audio Annotation Service Providers
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Fives Digital is an impact sourcing business process management company based out of India, with global clientele. With over 2500 team members across our 7 delivery centers in India, we are operational in tier 23 towns across India.
NA2 - 9Henderson, Nevada -
🚀 Macromodule Technologies - Mastering Digital Evolution Embark on a transformative journey with Macromodule Technologies, a leader in bespoke software engineering. We expertly craft solutions in Blockchain, Artificial Intelligence, Web Development, and App Development, transcending norms to shape the future of digital landscapes. Our Vision: 🔮 Empowering Tomorrow Today: Macromodule Technologies envisions a future where innovation knows no bounds. ... read Macromodule Technologies, LLC reviews & insights
$25 - $49/hr10 - 492015Miami, FloridaVerified Client Review
-It was a pleasure to work with this team. They were always ready to listen and respond to our needs.
reviewed by: Guilherme C Jacob, Company Owner at ARDR Tecnologia LTDA -
Haidata is a leading AI data solutions provider specializing in high-quality data services for AI and ML applications. We offer data annotation, data collection, and synthetic dataset generation across image, audio, video, and text domains. With a mission to enable “Data-Centric AI,” we have invested in scalable infrastructure and technology to deliver accurate, reliable, and ... read HaiData reviews & insights
< $25/hr10 - 492020Ooty, IndiaVerified Client Review
-Santhosh and his team provided quality images on time to complete various annotation services
reviewed by: Sheldon Quadros -
Ulatus empowers companies to communicate with their audiences in global markets in their native language. We offer innovative, timely, and cost-effective language solutions to global corporations exploring business opportunities in regional markets. We're among the 1% of translation companies in the world to be ISO 17100:2015 certified. This certification is only accredited to translation companies ... read Ulatus reviews & insights
NAFreelancer2005New Jersey, New Jersey -
Protranslate is an online translation services start-up operating in more than 70 languages and in various fields of translation, including localization services. We provide translations 24/7 for people all around the world, though our main area of operation is the MENA Region as for now. We are open to all your online translation projects and ... read Protranslate reviews & insights
< $25/hr2 - 92015Istanbul, TurkeyVerified Client Review
-Fast and Reliable Translate
reviewed by: Mustafa Andaç DERİNPINAR, Senior Product Manager | Senior Data Scientist at Gislab -
Talk with our team about your data and any customization you may require in your training dataset.A free demo will be given and we will compose a Proof of Concept (PoC) to clarify any ambiguities or uncertainties about the project.A dedicated LabelOps Manager prepares the timeline and set up the project team by selecting expert ... read LabelOps reviews & insights
NA10 - 49Mannarakkat, India -
Founded in 2011, Cloudester is a bespoke software development company to deliver fast, usable, high-performing, and secured mobile and web structures built to suit your specific requirements. What sets them apart is their team of talented and passionate digital nerds who always stay on pace with the latest trends and innovations to deal with each ... read Cloudester Software LLC reviews & insights
NA10 - 492011NYC, New YorkVerified Client Review
-They are a team of professionals and we would continue working with them for future updates.
reviewed by: Pankti Shah, Founder & CEO at Sanskruti Salon -
BorderlessMind is a premier remote IT talent provider that helps tech companies hire offshore, nearshore, and onshore remote-talent from across the globe. We have the best-in-class hiring process and help build high-quality teams with a remote global talent for our clients. Our unique hiring process helps us vet the best talent and guarantee success. ... read BorderlessMind reviews & insights
$25 - $49/hr50 - 2491999Dallas, Texas -
Cogito Tech offers Enterprise Data Labeling Services (EDLS), specializing in data curation and labeling. Our commitment to quality and ethical integrity is verified by the DataSum certification, ensuring transparency, ethical sourcing, and the highest data governance standards. This commitment enables us to deliver high-quality, ethically sourced data that you can trust, ensuring compliance, reliability, and ... read Cogito Tech reviews & insights
NA1,000 - 9,9992011NYC, New YorkVerified Client Review
-Working with CogitoTech was professional and highly productive experience for our project completion
reviewed by: Rachel -
We provide AI-driven solutions for industrial safety/HSC, manufacturing, inspection, automation, productivity enhancement, and cost reduction.
$25 - $49/hr50 - 2492022London, United KingdomVerified Client Review
-Exceptional AI solution with smooth collaboration and strong technical expertise throughout.
reviewed by: Alexanderharrison -
RisingPoint was sparked by a vision to redefine possibilities with AI. Fuelled by innovation and bold ideas, we transformed ambition into action, creating solutions that empower businesses to soar. From day one, we’ve been driven to ignite change and shape the future. Today, our journey continues, building a legacy of transformation. RisingPoint delivers cutting-edge AI and ... read RisingPoint Technologies Bhd reviews & insights
$150 - $199/hr10 - 492024Kuala Lumpur, MalaysiaVerified Client Review
-Rising Points delivered fast, accurate data entry and responsive 24/7 support.
reviewed by: Hugh Koh, Co-Founder | Chief Vision Officer at PMC -
SunTec Data is a leading data services provider and KPO & BPO/BPM company. With 25+ years of experience and 1500+ data professionals, we have established successful partnerships with a diverse range of businesses worldwide, like Honda, PEPSICO, Nielsen, Deloitte, and Expedia. We offer support for data entry and processing, data annotation, data management, data research ... read SunTec Data reviews & insights
< $25/hr1,000 - 9,9991999Laguna Beach, CaliforniaVerified Client Review
-The web scraping services provided by SunTec Data streamlined our data collection, saving our time.
reviewed by: Jessica Watson -
Infosearch BPO is a Global Business Outsourcing Company that specializes in various Annotation, Data Management, BPO & Call Centre Services. We are a 16+ years old company with huge experience in variety of projects. This ISO Certified Company handles all projects with trained in-house employees for 24x7 supported by World Class Infrastructure.Infosearch offers Annotation services ... read Infosearch BPO Private Ltd reviews & insights
< $25/hr250 - 9992005Chennai, IndiaVerified Client Review
-Timely delivery and customization impressed us!
reviewed by: Sudha Phone -
Fusion CX is a global leader in customer experience (CX) transformation, offering end-to-end outsourcing solutions powered by a unique blend of human expertise and cutting-edge Gen-AI technologies. With over 10,000 employees across 40+ global centers, Fusion CX delivers multilingual support in more than 40 languages. The company specializes in customer service, sales, tech support, and ... read Fusion CX reviews & insights
< $25/hr10000+2004Draper, UtahVerified Client Review
-Awesome Experience
reviewed by: Manish Jain, Chief Marketing & Strategy Officer | CX and BPO Leader | Championing Tech-Driven Growth at CMO Needs -
Innolab LLC is an international custom software development company that specializes in delivering tailored digital solutions across various industries. Founded in 2020, the company has grown to employ over 50 professionals and operates more than 3 development centers. Core Specializations Custom Software Development: Innolab LLC offers end-to-end development services for web, mobile, and cloud platforms, ... read INNOLAB reviews & insights
$50 - $99/hr10 - 492020Riga, LatviaVerified Client Review
-Innolab team was professional, collaborative, and hit every milestone on time
reviewed by: Buddy Lee, CEO at Buddy Lee Jump Ropes -
GET OUR EXPERT CONSULTING AND SOFTWARE ENGINEERING SERVICES Computools is a global software development and consulting company with over 250 engineers and 400+ completed projects. We hold ISO 9001 / ISO 27001 certifications and comply with GDPR and HIPAA standards. Trusted by global brands like Visa, Epson, and IBM, we are also a Microsoft and ... read Computools reviews & insights
$25 - $49/hr250 - 9992013NYC, New YorkVerified Client Review
-Workplace Remote (review from founder)
reviewed by: Vova Maslyuk, PhD student at MPU Halle -
Bluebash was established in 2018 as a custom software development company specializing in Web Development, Artificial Intelligence (AI), Cloud Infrastructure solutions. We have expertise in healthcare, e-commerce, and ed-tech industries, and our solutions are customized to meet each business's specific needs. Our primary goal is to help startups and established businesses expand their horizons through ... read Bluebash reviews & insights
$25 - $49/hr50 - 2492018Mohali, IndiaVerified Client Review
-Very Proactive In Product Management And Communication
reviewed by: Mingming Wang, Co-Founder and CEO at PopInventory -
Clover Dynamics is a tech development house dedicated to empowering scaleups through expertly vetted engineers, transparent processes, and a commitment to quality and innovation, with a focus on corporate social responsibility. Reliable and built to succeed in the long term, Clover Dynamics helps small and medium businesses to create software that works from day one. ... read Clover Dynamics reviews & insights
$50 - $99/hr10 - 492020Lviv, UkraineVerified Client Review
-Development of Global Crypto-to-Fiat Exchange Platform with Prepaid Cards
reviewed by: Vitalii Drach, Chief Executive Officer at RD2 Crypto Marketing & PR Agency -
Sodio is a digital product development company offering a range of services to help businesses succeed in the ever-evolving tech landscape. Our expertise spans Blockchain, AI, Mobile and Web App Development, Digital Marketing, Branding, and DevOps. In Blockchain, we deliver secure, decentralized solutions including dApp development, smart contracts, crypto wallets, and NFT marketplaces. These services ... read Sodio Technologies Pvt Ltd reviews & insights
< $25/hr10 - 492016Bengaluru, IndiaVerified Client Review
-Sodio Helped me in building and Scaling
reviewed by: Director at Vermi Organics Private Limited -
Triyock BPO, established in the year 2017, is an emerging global leader in providing expert data collection services and research outsourcing. We offer back office support, data entry, business processing, document conversion, web research, and scraping services. We emphasize innovation and use the best technology available. We are dedicated to delivering quality, speed, and integrated ... read Triyock reviews & insights
$25 - $49/hr50 - 2492017New Jersey, New JerseyVerified Client Review
-The Triyock team was amazing. They made the data entry process seamless.
reviewed by: Andrew Martin, Professor at University of Glasgow -
StairwaySoft is a global engineering provider of innovative software development services with a team of expert engineers. We service various businesses internationally to create solutions and help companies achieve their technology goals. We build software solutions through an ever-expanding UNIQUE HYBRID of Eastern European, Middle East and Central Asia Engineering matched with Israeli Innovation
$25 - $49/hr10 - 492012Kington, United KingdomVerified Client Review
-Very good
reviewed by: Daniel David, VP R&D at Boards.com -
Glinteco is a leading IT outsourcing company specializing in web and mobile app development, AI/ML integration, UI/UX design, and automation testing. Based in Vietnam, our highly skilled team, including PhD-level experts, works closely with SMEs and startups to deliver customized tech solutions that drive business growth and long-term success.We aim to be a reliable technology ... read Glinteco reviews & insights
$50 - $99/hr10 - 49Ha noi, VietnamVerified Client Review
-Excellent, would recommend
reviewed by: John Lloyd, CEO at Idyoma -
At Primalt, our mission is to empower individuals and organizations through technological innovation by creating advanced software and digital solutions that help businesses grow intelligently and sustainably. We craft intelligent software that responds to your needs with innovation rooted in human values, creativity, and simplicity.Every line of code we write is driven by a single ... read Primalt reviews & insights
$25 - $49/hr10 - 492023Zebbug, MaltaVerified Client Review
-My experience was great, they did all the services with a high level of commitment, professionality.
reviewed by: Edvin Bixha, Director at Free Plug sh.p.k -
Crystal Hues Limited is a two-decade-old organization, uniquely positioned as the ideal partner providing complete communication life-cycle services through its four specialized verticals namely CHL Localization focused on translation and localization, CHL Worldwide focused on integrated advertising, CHL SofTech focused on building technology solutions and CHL Digital focused on digital marketing. The procedures and systems ... read Crystal Hues Limited reviews & insights
$25 - $49/hr50 - 2491989Delhi, India -
Before AI-powered tools can identify objects or understand speech, they need people to teach them. The human-in-the-loop model assumes that machines improve their performance using data processed by humans. Only with people’s help can AI deliver relevant search results, recognize faces, recommend products, identify diagnoses, etc.Machine learning (ML) models become effective only when they learn ... read Human Annotation reviews & insights
NA10 - 49Aptos, California -
Remote Labeler is a well-established and trusted provider of specialized data annotation services, operating at the forefront of innovation in the realm of artificial intelligence (AI) and machine learning (ML). Our unwavering dedication is fueled by the profound impact that AI and ML technologies have on industries across the spectrum, from healthcare and automotive to ... read Remote Labeler reviews & insights
< $25/hr50 - 2492020Kyiv, Ukraine -
We started our business in 2018 in Kyiv, Ukraine, and it has grown into an international company with its headquarter in Palo Alto, California, USA.We bring expertise in Data Annotation, Data collection and AI modules creation. With a team of more than 150 tech specialists, we have shown results that exceed all expectations, creating a ... read Outforz reviews & insights
NA50 - 2492018Palo Alto, California -
Keymakr provides services of advanced data collection for training of Convolutional Neural Networks and Deep Learning Artificial Intelligence systems. Our experts in Data Collection team specialize in collecting and constructing high quality custom training datasets for deep learning algorithms. The company has the technological infrastructure and knowledge for efficiently collecting, sorting and verifying data from ... read Keymakr reviews & insights
NA10 - 492015NYC, New York -
Need high-quality training data for your machine learning models? Look no further! Our team of experienced annotators provide accurate and consistent labeling, making your data more valuable than ever.Get the best of both worlds with our human-in-the-loop services. Our team of experts will work alongside your automated processes to complement its scalability with human intelligence.
NA10 - 49San Francisco, California -
High-quality training data and data collection is essential for all large language models, whether you build the data yourself, use a dataset from Sapien, or pre-existing models. A human-in-the-loop labeling process delivers real-time feedback for fine-tuning datasets to build the most performant and differentiated AI models.We provide precise data labeling with faster human input to ... read Sapien reviews & insights
NA10 - 492023San Francisco, California -
DVL empowers businesses to mitigate the risk of non-compliance and strive towards a safe & high-quality workplace by automating human observation-based process inspection. Artificial intelligence (AI) and machine learning (ML) determine new approaches to business models that require large amounts of data. Choose the best computer vision data annotation outsourcing service and save money and time ... read Data Vision reviews & insights
NA10 - 49Lahore, Pakistan -
We are a Kyiv-based data annotators and labelers provider that helps your business take full advantage of Artificial Intelligence. We specialize in hiring data annotation professionals for companies from various industries with headquarters across multiple countries. So rest assured that your AI models and Machine Learning algorithms will be trained with high-quality labeled data. Since ... read My Data Annotation reviews & insights
NA10 - 49Kyiv, Ukraine -
We are one of the most reliable and specialized providers of remote Artificial Intelligence (AI) data labeler and data annotator professionals based in Kyiv, Ukraine. Our professional-level services help to meet the custom needs of your business. We offer highly cost-efficient and skill-oriented data annotation services to enterprises across the globe.
NA10 - 49Kyiv, Ukraine -
Lumina Datamatics is a trusted partner in providing Content Services, Retail Support Services, and Technology Solutions to several global companies in the Publishing and Retail industries worldwide. We are amongst the largest service providers in this space and our customers include 8 of the 10 largest Publishers & 3 of the 5 largest Retailers / ... read Lumina Datamatics reviews & insights
NA10 - 49Chennai, India -
Get Annotator is the first platform purpose-built to help you hire data annotators every month—no middlemen, no delays, no guesswork. We simplify AI development by matching startups, research teams, and enterprises with skilled annotators aligned to your tools, domain, and project goals. Whether you're training a computer vision model or fine-tuning NLP pipelines, our ready-to-deploy ... read GetAnnotator reviews & insights
< $25/hr10 - 492025Noida, India -
Annotation Box provides high-quality and accurate data annotation services for training AI and Machine Learning models. We offer a wide range of services, including image, video, audio, and text annotation, to help businesses and organizations improve their machine-learning models. With a team of experienced annotators and state-of-the-art technology, we ensure timely delivery and exceptional results ... read Annotation Box reviews & insights
NA10 - 492004Kolkata, India -
Anolytics provides a high-quality and low-cost annotation service for the construction of machine learning and artificial intelligence models. It uses multiple annotation techniques to provide accurately annotated data in text, photos, and videos while assuring correctness and quality. It is highly accurate in the image, video, and text annotation . Anolytics offers all effective data ... read ANOLYTICS reviews & insights
$25 - $49/hr250 - 9992019NYC, New York -
iMerit combines the technologies, talent and techniques that, together, deliver AI data solutions that companies rely on. Learn more about iMerit and our leadership team here.Our customers are able to focus on the algorithms that drive their company forward, while our teams of trained specialists handle the data work and reinforcement learning. With an output ... read iMerit reviews & insights
NA10 - 49Bengaluru, India -
Frinksyn bring together the best people, processes, and technologies to deliver exceptional quality data services. We partner with your vision to understand your requirements while assuring to be agile and flexible for your evolving data needs.Our full-time expert workforce undergoes specialized training and has vast annotation experience in different domains. Frinksyn Architects draw upon their ... read Frinksyn reviews & insights
NA10 - 49Kolkata, India -
Infografts is a tech-driven startup specializing in delivering precise, scalable, and high-quality data services. We provide a comprehensive range of solutions, including data annotation (text, image, audio, video, 3D), data processing (content moderation, data entry, content generation), and data sourcing. Our services empower businesses to transform raw data into actionable insights, driving innovation and optimizing ... read Infografts reviews & insights
< $25/hr2 - 92025Karur, India -
At Aceolution, we empower businesses to scale efficiently through a combination of AI/ML data services and business process outsourcing (BPO) solutions. With deep expertise in data annotation, data operations, and back-office process management, we support organizations across industries in building accurate, high-quality datasets and running seamless day-to-day operations. Our technology-driven approach, combined with skilled human ... read Aceolution Inc reviews & insights
< $25/hr250 - 9992012Somerset County, New Jersey -
AIPersonic is an AI-data services company specializing in high-quality data annotation and labeling across formats — including images, text, audio, video and mixed data — to help businesses train AI and machine-learning models.
NA250 - 9992025Oceanside, California -
Using global linguistic, cultural, and technological expertise, we create high-quality datasets tailored to your needs. Whether it's customized collection or annotation, we provide meaningful data to propel AI/ML applications.Generative AI can transform your business through increased efficiency, enhanced customer experiences and more. LXT’s generative AI services provide expert human input for a wide range of ... read LXT reviews & insights
$25 - $49/hr2 - 9Mississauga, Canada -
Your Personal AI (YPAI) specializes in delivering ethical and innovative AI solutions tailored to meet the diverse needs of businesses worldwide. Founded in 2023 and headquartered in Norway, YPAI focuses on providing high-quality data collection, annotation, and custom AI tools that empower organizations to achieve their goals with efficiency and precision. We address the most ... read Your Personal AI reviews & insights
NA50 - 2492021Lysaker, Norway -
Aya Data stands as a leader in data annotation services, delivering top-tier solutions with accuracy and dependability. We specialize in high-quality annotations for computer vision, natural language processing (NLP), and 3D data. Our tailored services enhance the precision, scalability, and efficiency of AI and machine learning models, helping businesses thrive in today’s data-driven landscape. Why ... read Aya Data reviews & insights
NA50 - 2492020London, United Kingdom -
Elevate Your Business with Valiant Digital At Valiant Digital, we help small to medium-sized local businesses transform their online presence, streamline operations with cutting-edge AI, and accelerate growth through strategic digital solutions. Whether you’re looking to optimize workflows, enhance customer engagement, or establish a powerful digital footprint, our expertise ensures that your business stays ahead ... read Valiant Digital reviews & insights
$50 - $99/hr2 - 92016Calgary, Canada -
Superlinear is an AI company that helps businesses navigate their AI journey, making sure each step delivers real impact, efficiency, and change.We want to ensure that every investment strengthens your business, not distracts from it. Because every company has a role to fulfil. Our goal is to keep you focused on that mission, helping you ... read Superlinear reviews & insights
NA10 - 492018Brussels, Belgium -
We believe that everyone has the potential to achieve greatness and fulfill their dreams. That’s why we are committed to providing innovative solutions and exceptional services that empower individuals to overcome obstacles and turn their aspirations into reality. For over 20 years, our team was transforming enterprise environments, turning vision into reality, from strategic design ... read HLACIK s.r.o. reviews & insights
NA2 - 92019Prague, Czech Republic
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