Top Data Annotation Services in California
-
Featured
What are Featured Providers?
UndisclosedUndisclosed1,000 - 9,999Serves CaliforniaServices provided
See 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.
-
$1,000+< $25 / hr50 - 249San Diego, CA
Services provided
See all 74 projectsTask Virtual is a versatile outsourcing company providing SEO, administrative, and customer support services. Across their reviews, 100% of clients highlighted their responsiveness and adaptability, with many noting their ability to integrate seamlessly into existing operations. Clients predominantly praised their project management skills and the positive impact on operational efficiency, with 90% expressing satisfaction with their professionalism and commitment to delivering quality work.
-
$1,000+< $25 / hr50 - 249Los Angeles, CA
Services provided
See 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.
-
UndisclosedUndisclosed50 - 249San Francisco, CA
Services provided
See all 29 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.
-
$1,000+$25 - $49 / hr250 - 999Laguna Beach, CA
Services provided
Launched in 1999, SunTec.ai is a midsize Data Annotation Services company. Their team offers Data Annotation Services and Generative AI.
Read more -
$100,000+$300+ / hr10,000+San Francisco, CA
Services provided
Established in 1999, SalesForsaas is a Data Annotation Services company. Their services include Data Annotation Services and CRM consulting and SI.
Read more -
$10,000+$100 - $149 / hr50 - 249Covina, CA
Services provided
Data Annotation Services company INFOTANKS MEDIA is based in Covina, California. They provide Data Annotation Services and Digital Strategy.
Read more -
$1,000+$50 - $99 / hr10 - 49Costa Mesa, CA
Services provided
AI development company OpenDrawing focuses on Artificial Intelligence and Data Annotation Services. They were established in 2024.
Read more -
UndisclosedUndisclosed50 - 249San Francisco, CA
Services provided
Labelbox, a Data Annotation Services company, was launched in 2018. The team focuses on Data Annotation Services and Artificial Intelligence.
Read more -
$50,000+Undisclosed10 - 49Carlsbad, CA
Services provided
Big Data Rhino is an artificial intelligence firm. The Carlsbad, California-based company specializes in Artificial Intelligence and AI Agents.
Read more -
$1,000+Undisclosed10 - 49Palo Alto, CA
Services provided
Dataplatr 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.
Read more -
$10,000+$50 - $99 / hr2 - 9Glendale, CA
Services provided
In 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.
Read more -
UndisclosedUndisclosed10 - 49Irvine, CA
Services provided
Based in Irvine, California, BasicAI Inc is a small Data Annotation Services company. The team offers Data Annotation Services and Artificial Intelligence.
Read more -
UndisclosedUndisclosed2 - 9San Francisco, CA
Services provided
Located 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
Read more -
UndisclosedUndisclosed50 - 249San Francisco, CA
Services provided
Clarifai, Inc., an AI firm, is based in San Francisco, California. Their services include Artificial Intelligence and Content Moderation Services.
Read more -
$50,000+$25 - $49 / hr50 - 249Palo Alto, CA
Services provided
OpenCV.ai is an AI firm. The company is based in Palo Alto, California. Their services include Artificial Intelligence and AI Consulting.
Read more -
$5,000+< $25 / hr1,000 - 9,999Santa Clara, CA
Services provided
See 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 more -
UndisclosedUndisclosed250 - 999San Francisco, CA
Services provided
DataForce is an artificial intelligence development company. Founded in 2012, the team focuses on Artificial Intelligence and Data Annotation Services.
Read more -
UndisclosedUndisclosed10 - 49San Francisco, CA
Services provided
Founded in 2017, Stardust AI is a Data Annotation Services company. Their team focuses on Data Annotation Services and Artificial Intelligence.
Read more -
$1,000+< $25 / hr250 - 999Laguna Beach, CA
Services provided
See 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.
Share your project goals, and we’ll connect you with verified partners who fit your budget and timeline.
Get My Matches
Tell us what you need — we’ll match you with top agencies in minutes.
Get My MatchesWhy Trust Clutch
At Clutch, we believe trust is the foundation of every business relationship. Our mission is to help buyers make confident, data-backed decisions informed by real client experiences.
Every review on Clutch undergoes a rigorous, human-led verification process to make sure it’s valid. Our team of specialists confirms the identity of each reviewer, ensures the project is legitimate, and only publishes reviews that meet our strict criteria.
Verification doesn’t stop at the point of publication. Our Trust & Safety team routinely audits older reviews against our guidelines. When reviews fall short of our standards, we remove them.
We evaluate service providers using a structured methodology that combines:
- In-depth client interviews and ratings
- Comprehensive project details
- Market presence
- Portfolio examples and industry recognition
This data powers tools like the Leaders Matrix, which helps you compare agencies directly. Our research team curates rankings by weighing verified reviews most heavily, so the most trusted and experienced providers rise to the top.
Using this unique combination of verified client feedback and provider-supplied insights, Clutch distills the most important details into clear, digestible summaries so you have everything you need to make confident, informed decisions quickly.
We take fraud seriously. Providers who violate our guidelines may face lower rankings, restricted visibility, or removal from the platform altogether.
Clutch’s commitment to transparency is ongoing. We’re constantly refining our systems to protect the integrity of reviews and support you in finding the right agency.
List of the Top 1 California Data Annotation Companies
-
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 -
$1,000+$25 - $49 / hr250 - 999Laguna Beach, CA
Ability to deliver
5.2/40.00/20 Reviews0/10 Clients & Experience5.2/10 Market PresenceService focus
35% Data Annotation Services65% 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 -
$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 -
$10,000+$50 - $99 / hr2 - 9Glendale, CA
Ability to deliver
4/40.00/20 Reviews0/10 Clients & Experience4/10 Market PresenceService focus
20% Data Annotation Services80% 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
32/40.016.8/20 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