Top Data Annotation Services in California
1 Leaders 15 Contenders
19 Companies
List of the Top California Data Annotation Companies
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UndisclosedUndisclosed1,000 - 9,999Serves CaliforniaServices provided
35% Data Annotation Services35% Customer Service Outsourcing30% Generative AISee all 37 projectsMindy Support is a data annotation company specializing in services such as ML Data Annotation and Data Tagging Services. The company consistently receives positive feedback, with clients noting their ability to deliver projects on time and at a reasonable cost. Approximately 80% of reviewers highlight their responsiveness and flexibility as key strengths.
Reviews mention Knowledgeable
Clients consistently commend Mindy Support for their extensive knowledge and expertise in quality assurance processes. One reviewer highlighted how the team worked independently and professionally, facilitating a smooth operational setup. Their ability to analyze incoming support tickets effectively and provide timely assistance was also noted as a significant strength. Overall, the sentiment surrounding Mindy Support's knowledge is highly positive, with clients expressing satisfaction and loyalty due to their reliable service.-
Cloud Application Tech Support for Social Intranet Platform
5.0 May 18, 2020After training and onboarding, the team began to work really well – professionally, independently and in a client-oriented way. They were very helpful, providing an effective team and helping us to arrange the process much earlier before we expected. Their knowledge of quality assurance processes and maintaining uninterrupted work helped us to set up operations very smoothly and on a high level.
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1 of 2 Data Annotation Services reviews are 5 starsUnknown avg. project costRead 2 ReviewsData Annotation Services PROJECT HIGHLIGHT
Data Annotation Services for Mapping Company
4.5 — Mindy Support provides data annotation services for a mapping company. The team uses the client's software to determine, annotate, and correct map elements. Read moreWas this helpful?
Industry Experience
Mindy Support has received positive feedback across various industries, including Automotive, eCommerce, and Financial Services. Their expertise in multilingual customer support, data annotation, and quality assurance stands out, with clients noting their operational efficiency and adaptability. In the Automotive sector, they excelled in customer service, while in eCommerce, they facilitated market expansion through effective telephone support. Overall, clients appreciate their strong communication, responsiveness, and flexibility, making them a suitable partner for businesses in sectors requiring robust customer and data support.
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Healthcare Beauty & Cosmetics Automotive eCommerce Manufacturing IT Services Engineering Software Research Arts, entertainment & music Financial services Utilities Gaming Other Industry Construction Advertising & marketing Information technology BeautyWas this helpful?
Average Project Cost Breakdown
Read All ReviewsWhat Clients Have Said
Mindy Support is consistently recognized for providing good value for money, with clients emphasizing their competitive pricing and quality of service. For instance, one client noted that Mindy Support offered a 'good value for cost' and another highlighted their 'excellent service at a reasonable price.' Overall, clients appreciate the balance between cost and quality, with many stating that Mindy Support's pricing is competitive compared to other vendors, making them a reliable choice for outsourcing.Was this helpful?
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$1,000+< $25 / hr50 - 249San Diego, CA
Services provided
10% Data Annotation Services40% Back Office Outsourcing20% Sales Outsourcing +2 services20% Search Engine Optimization10% Call Center ServicesSee all 81 projectsTask Virtual is a versatile virtual assistance and support company, providing services such as customer service, administrative support, data processing, SEO, and B2B lead generation. Overall, 100% of reviews highlight their reliability and professionalism, with many noting their adaptability and ability to integrate seamlessly into existing workflows. Approximately 40% of reviews emphasize the company's commendable project management and communication skills, while around 60% praise their ability to tailor services to specific business needs.
Reviews mention Communicative
Task Virtual is praised for its exceptional communication skills across multiple client reviews. Clients noted their responsiveness and proactive engagement, with one client highlighting that Task Virtual's team provided consistent updates and maintained clear communication, adapting quickly to new processes. Another client commended their ability to understand and integrate within the healthcare environment while maintaining professionalism. Overall, the sentiment regarding Task Virtual's communicative approach is overwhelmingly positive, with clients expressing satisfaction with the clarity and efficiency of their interactions.-
Web Dev, Market Research & Graphic Design for Cosmetics Company
5.0 Feb 19, 2025I am most impressed with TaskVirtual's readiness. Their communication is great, and they respond very quickly. I greatly appreciate this! They reply to my emails day in and day out, which is essential as I'm building my online business. This consistent communication makes a huge difference.
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SEO Services for Financial Services Company
5.0 Sep 13, 2025Their project management was excellent; they delivered tasks on schedule, maintained consistent communication, and quickly addressed any concerns.
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SEO Services for Pest Control Company
5.0 Dec 17, 2025Task Virtual demonstrated excellent project management throughout our partnership. They consistently delivered work on time and were highly responsive to our needs, always making sure to address any questions or adjustments we had promptly. Communication was clear and efficient, and they kept us informed of progress with regular updates, ensuring that we were aligned on goals and milestones at all times.
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Virtual Assistant Services for EdTech Company
5.0 Mar 28, 2025They maintained open communication, and their project management was good. What impressed us was their proactive approach and ability to predict our needs, which helped keep everything running smoothly.
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Copywriting and Marketing for Online Courses
5.0 May 17, 2019Communication was on point, and they asked questions to ensure efficiency and effectiveness. They were great.
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7 of 7 reviews are 5 starsLess than $10,000 avg. project costRead 7 Recent ReviewsReviewed 7 times in the past 6 months
Task Virtual has received positive feedback from clients over the past six months, highlighting its adaptability and effective support across various operational tasks. Clients appreciated the team's ability to quickly understand workflows and maintain communication standards, which enhanced efficiency in customer service and administrative functions. Specific instances included significant improvements in appointment scheduling and data management, leading to reduced workloads for internal teams. Overall, the sentiment reflects satisfaction with Task Virtual's professionalism and flexibility, although some suggested enhancements for onboarding processes.Was this helpful?
Industry Experience
Task Virtual has demonstrated strong capabilities across various industries, including financial services, advertising & marketing, retail, information technology, and education. Clients have praised its flexibility, operational support, and ability to streamline processes, resulting in increased efficiency and improved customer experiences. The positive feedback highlights Task Virtual's expertise in customer service, administrative support, SEO, and data management, indicating a robust fit for businesses seeking reliable outsourcing solutions in these sectors.
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Retail Business services Arts, entertainment & music Information technology Beauty & Cosmetics IT Services Legal Healthcare Consumer products & services Education Advertising & marketing Financial servicesWas this helpful?
More responsive than most other service providers
Get in TouchTask Virtual is very responsive
They are a great candidate to start a conversation with. Send them a short message or project inquiry.Was this helpful?
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$1,000+< $25 / hr50 - 249Los Angeles, CA
Services provided
10% Data Annotation Services20% Staffing15% HR Outsourcing +5 services15% PEO/Employee Leasing10% BI & Big Data Consulting & SI10% Employer of Record (EOR) Services10% IT Staff Augmentation10% RecruitingSee all 9 projectsWexpand is an HR and recruitment agency specializing in sourcing, hiring, and managing high-quality talent across diverse industries. The company consistently receives positive feedback, with over 90% of reviews highlighting their efficient processes, cost-effectiveness, and excellent communication. Clients frequently commend Wexpand's ability to deliver tailored recruitment solutions and achieve impressive results, such as a 300%–400% increase in employee satisfaction.
Reviews mention Innovative
Clients consistently highlight Wexpand's innovative approach to talent sourcing and project management. One client emphasized their commitment to evolving and technically advancing, leading to faster and better results. Additionally, Wexpand's ability to deliver timely, cost-effective candidates with unique global backgrounds showcases their creativity and problem-solving capabilities. Overall, the sentiment surrounding Wexpand's innovation is highly positive, reflecting their effectiveness in fostering productive partnerships.-
Recruitment for Outsourcing Company
5.0 Sep 12, 2023Wexpand continues to evolve and technically advance as well, consistently giving us faster and better results. Wexpand excels at delivering timely, cost-effective, and highly talented candidates with a global background, making the team members extremely competitive. The dedication, creativity, and problem-solving are unique and consistent.
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Industry Experience
Wexpand has demonstrated expertise across various industries, including Nonprofit, Motion Pictures, Software, Construction, Business Services, Consulting, and Transportation. Clients commend their exemplary project management, quick recruitment processes, and ability to provide culturally aligned talent. The overall sentiment is highly positive, with notable strengths in enhancing productivity, reducing costs, and fostering strong communication. Potential clients in these sectors can expect a tailored approach and effective solutions that align with their specific operational needs.
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Nonprofit Motion Pictures & Film Software Construction Business services Transportation ConsultingWas this helpful?
View projects from:
This provider is fluent in 3 languages:
- English
- Hebrew
- Spanish
This provider is available in 3 time zones:
- Central Standard Time (CST)
- Pacific Standard Time (PST)
- Mountain Standard Time (MST)
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See All Locations (2)Los Angeles, CA
1150 South Olive Street
Los Angeles, CA 900152 - 5
+1 (206) 890 3956
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UndisclosedUndisclosed50 - 249San Francisco, CA
Services provided
10% Data Annotation Services60% IT Staff Augmentation30% Employer of Record (EOR) ServicesSee all 31 projectsSecond Talent is a recruitment firm specializing in IT staffing and remote engineering support. The company is highly regarded for its structured hiring process and efficient project management, with 100% of reviewers highlighting their reliability and ability to meet deadlines. Clients appreciate their market knowledge and adaptability, though some suggest initial briefings could be more structured.
Reviews mention Communicative
Second Talent is consistently praised for its communicative approach, with clients noting their prompt acknowledgment of requests and timely updates. One client highlighted the team's ability to maintain clear communication and visibility into next steps, describing the partnership as unusually smooth. Another client remarked on their excellent project management, emphasizing how Second Talent proactively aligned with internal requirements, ensuring seamless collaboration. Overall, the sentiment is highly positive, indicating that Second Talent excels in maintaining open and effective communication throughout the project lifecycle.-
Staff Augmentation Services for Consumer Products Company
5.0 Nov 6, 2025The team demonstrated excellent project management with clear communication and timely follow-ups. Second Talent team consistently met deadlines and proactively aligned with our internal requirements, making the entire process seamless.
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IT Staff Augmentation for AI-Driven E-Commerce Platform
5.0 Nov 28, 2025Their project management was straightforward and dependable. Requests were acknowledged quickly, updates were timely, and any adjustments we needed were handled without friction. They consistently delivered on expectations, kept communication clear, and ensured we always had visibility into next steps. What stood out most was how consistently reliable they were, no overpromising, no surprises, just steady delivery and a clear understanding of what teams actually need to stay productive. Their blend of practical execution, responsive support, and genuinely thoughtful communication made the partnership feel unusually smooth compared to similar providers.
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1 of 2 reviews are 5 stars$10,000 – $49,000 avg. project costRead 2 Recent ReviewsReviewed 2 times in the past 6 months
Second Talent has received positive feedback in the last six months, with clients praising their effective talent search and recruitment processes. One client highlighted the company's strong market knowledge and ability to fill roles efficiently, stating that all positions were filled within ten weeks and that new hires integrated seamlessly. Another client noted the high quality of candidates, particularly those familiar with AI-driven workflows. Overall, clients appreciated Second Talent's responsiveness and communication, although some suggested improvements in providing more detailed initial profiles.Was this helpful?
Industry Experience
Second Talent has demonstrated its expertise primarily in the Information Technology industry, providing reliable talent acquisition and engineering support. Clients praised their ability to fill roles swiftly and enhance team productivity, highlighting strengths in project management and communication. Additionally, Second Talent has made positive impacts in the Education sector, where they effectively sourced engineers adept in AI-driven workflows. Overall, feedback indicates a high level of satisfaction, suggesting that companies in IT and Education would benefit greatly from Second Talent's services.
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Education Other industries Information technologyWas this helpful?
Average Project Cost Breakdown
Read All ReviewsWhat Clients Have Said
Second Talent is frequently praised for its value for money, with clients noting that its pricing fits within their budgets while delivering quality outcomes. One client highlighted that the service resulted in a 50% reduction in hiring time and improved productivity. Another emphasized the good value for cost and the seamless subscription model that simplified team expansion. Overall, the sentiment is positive, with clients appreciating the combination of cost-effectiveness and reliable service.Was this helpful?
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$100,000+$300+ / hr10,000+San Francisco, CA
Services provided
30% Data Annotation Services25% CRM Consulting and SI25% Sales Outsourcing +1 service20% Generative AIEstablished in 1999, SalesForsaas is a Data Annotation Services company. Their services include Data Annotation Services and CRM consulting and SI.
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$10,000+$100 - $149 / hr50 - 249Covina, CA
Services provided
30% Data Annotation Services10% Content Marketing10% Digital Strategy +5 services10% Email Marketing10% Pay Per Click10% Search Engine Optimization10% Social Media Marketing10% UX/UI DesignData Annotation Services company INFOTANKS MEDIA is based in Covina, California. They provide Data Annotation Services and Digital Strategy.
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$1,000+$50 - $99 / hr10 - 49Costa Mesa, CA
Services provided
20% Data Annotation Services60% AI Development20% BI & Big Data Consulting & SIAI development company OpenDrawing focuses on Artificial Intelligence and Data Annotation Services. They were established in 2024.
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UndisclosedUndisclosed50 - 249San Francisco, CA
Services provided
60% Data Annotation Services20% AI Development20% Generative AILabelbox, a Data Annotation Services company, was launched in 2018. The team focuses on Data Annotation Services and Artificial Intelligence.
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$10,000+$50 - $99 / hr2 - 9Glendale, CA
Services provided
20% Data Annotation Services30% BI & Big Data Consulting & SI20% Web Development +2 services15% Custom Software Development15% Low/No Code DevelopmentIn Glendale, California, DBVON Data Solutions is a small big data analytics company. The team focuses on BI & big data consulting & SI and Data Annotation Services.
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$50,000+Undisclosed10 - 49Carlsbad, CA
Services provided
20% Data Annotation Services30% AI Agents30% AI Development +1 service20% BI & Big Data Consulting & SIBig Data Rhino is an artificial intelligence firm. The Carlsbad, California-based company specializes in Artificial Intelligence and AI Agents.
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$1,000+Undisclosed10 - 49Palo Alto, CA
Services provided
10% Data Annotation Services25% BI & Big Data Consulting & SI20% AI Consulting +5 services10% Business Consulting10% Cloud Consulting & SI10% Generative AI10% IT Managed Services5% Content Moderation ServicesDataplatr is a big data company. They are located in Palo Alto, California and have small team of experts. Their services include BI & big data consulting & SI and AI Consulting.
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UndisclosedUndisclosed10 - 49Irvine, CA
Services provided
60% Data Annotation Services20% AI Development20% Generative AIBased in Irvine, California, BasicAI Inc is a small Data Annotation Services company. The team offers Data Annotation Services and Artificial Intelligence.
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UndisclosedUndisclosed2 - 9San Francisco, CA
Services provided
60% Data Annotation Services40% AI DevelopmentLocated in San Francisco, California and New York City, New York, Pantima Inc. Is a small Data Annotation Services company. Their services include Data Annotation Services and Artificial
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UndisclosedUndisclosed50 - 249San Francisco, CA
Services provided
20% Data Annotation Services20% AI Development20% API Development +2 services20% Content Moderation Services20% Generative AIClarifai, Inc., an AI firm, is based in San Francisco, California. Their services include Artificial Intelligence and Content Moderation Services.
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$50,000+$25 - $49 / hr50 - 249Palo Alto, CA
Services provided
10% Data Annotation Services45% AI Consulting35% AI Development +1 service10% Low/No Code DevelopmentOpenCV.ai is an AI firm. The company is based in Palo Alto, California. Their services include Artificial Intelligence and AI Consulting.
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$5,000+< $25 / hr1,000 - 9,999Santa Clara, CA
Services provided
50% Data Annotation Services30% Back Office Outsourcing20% Document Digitization & ManagementSee all 2 projectsHitech BPO, established in 1992, is a leading business process outsourcing company. We help businesses around the world, including those in the USA, UK, and Canada, unlock the full potential of
Read moreSee All Locations (4)Santa Clara, CA
547 Moreland Way
Santa Clara, CA 9505450 - 75
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UndisclosedUndisclosed250 - 999San Francisco, CA
Services provided
40% Data Annotation Services40% AI Development20% Generative AIDataForce is an artificial intelligence development company. Founded in 2012, the team focuses on Artificial Intelligence and Data Annotation Services.
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UndisclosedUndisclosed10 - 49San Francisco, CA
Services provided
60% Data Annotation Services40% AI DevelopmentFounded in 2017, Stardust AI is a Data Annotation Services company. Their team focuses on Data Annotation Services and Artificial Intelligence.
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$1,000+< $25 / hr250 - 999Laguna Beach, CA
Services provided
40% Data Annotation Services15% Back Office Outsourcing15% Content Moderation Services +2 services15% Environmental Consulting15% Market ResearchSee all 1 projectsData-Entry-India.com offers a range of data enrichment services, including identifying and eliminating duplicate entries, updating invalid emails, and digitizing paper forms. Reviews highlight the company's responsiveness, professionalism, and ability to deliver accurate, timely results. Clients appreciate their attention to detail and proactive communication, making them a reliable partner for data-related projects.
See All Locations (3)Laguna Beach, CA
1968 South Coast Highway
Laguna Beach, CA 9265110 - 15
+15852830055
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$1,000+$25 - $49 / hr250 - 999Laguna Beach, CA
Services provided
30% Data Annotation Services20% Generative AI15% AI Agents +3 services15% Robotics Process Automation10% AI Consulting10% AI DevelopmentSunTec.ai is a Data Annotation Services company. They focus on Data Annotation Services and Generative AI and were launched in 1999.
Read moreSee All Locations (3)Laguna Beach, CA
1968 South Coast Highway
Laguna Beach, CA 926512 - 5
+15852830055
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List of the Top 1 California Data Annotation Companies
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UndisclosedUndisclosed50 - 249San Francisco, CA
Ability to deliver
23.3/40.017.6/20 Reviews0/10 Clients & Experience5.7/10 Market PresenceService focus
10% Data Annotation Services90% Other -
$100,000+$300+ / hr10,000+San Francisco, CA
Ability to deliver
4/40.00/20 Reviews0/10 Clients & Experience4/10 Market PresenceService focus
30% Data Annotation Services70% Other -
$10,000+$100 - $149 / hr50 - 249Covina, CA
Ability to deliver
5.3/40.00/20 Reviews0/10 Clients & Experience5.3/10 Market PresenceService focus
30% Data Annotation Services70% Other -
$1,000+$50 - $99 / hr10 - 49Costa Mesa, CA
Ability to deliver
4.6/40.00/20 Reviews0/10 Clients & Experience4.6/10 Market PresenceService focus
20% Data Annotation Services80% Other -
UndisclosedUndisclosed50 - 249San Francisco, CA
Ability to deliver
0/40.00/20 Reviews0/10 Clients & Experience0/10 Market PresenceService focus
60% Data Annotation Services40% Other -
$10,000+$50 - $99 / hr2 - 9Glendale, CA
Ability to deliver
4.6/40.00/20 Reviews0/10 Clients & Experience4.6/10 Market PresenceService focus
20% Data Annotation Services80% Other -
$50,000+Undisclosed10 - 49Carlsbad, CA
Ability to deliver
4/40.00/20 Reviews0/10 Clients & Experience4/10 Market PresenceService focus
20% Data Annotation Services80% Other -
$1,000+Undisclosed10 - 49Palo Alto, CA
Ability to deliver
4.9/40.00/20 Reviews0/10 Clients & Experience4.9/10 Market PresenceService focus
10% Data Annotation Services90% Other -
UndisclosedUndisclosed10 - 49Irvine, CA
Ability to deliver
0/40.00/20 Reviews0/10 Clients & Experience0/10 Market PresenceService focus
60% Data Annotation Services40% Other -
UndisclosedUndisclosed2 - 9San Francisco, CA
Ability to deliver
0/40.00/20 Reviews0/10 Clients & Experience0/10 Market PresenceService focus
60% Data Annotation Services40% Other -
$1,000+< $25 / hr50 - 249Los Angeles, CA
Ability to deliver
31.8/40.016.6/20 Reviews9.9/10 Clients & Experience5.3/10 Market PresenceService focus
10% Data Annotation Services90% Other -
UndisclosedUndisclosed50 - 249San Francisco, CA
Ability to deliver
0/40.00/20 Reviews0/10 Clients & Experience0/10 Market PresenceService focus
20% Data Annotation Services80% Other -
$50,000+$25 - $49 / hr50 - 249Palo Alto, CA
Ability to deliver
6.5/40.00/20 Reviews0.1/10 Clients & Experience6.4/10 Market PresenceService focus
10% Data Annotation Services90% Other -
$5,000+< $25 / hr1,000 - 9,999Santa Clara, CA
Ability to deliver
7.1/40.00/20 Reviews0/10 Clients & Experience7.1/10 Market PresenceService focus
50% Data Annotation Services50% Other -
UndisclosedUndisclosed250 - 999San Francisco, CA
Ability to deliver
0/40.00/20 Reviews0/10 Clients & Experience0/10 Market PresenceService focus
40% Data Annotation Services60% Other -
$1,000+< $25 / hr50 - 249San Diego, CA
Ability to deliver
28.8/40.018.2/20 Reviews2.2/10 Clients & Experience8.3/10 Market PresenceService focus
10% Data Annotation Services90% Other
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