Company lists · Data refreshed November 2026

Top 22 Data labeling and annotation services based in India

RevenueBase identified 194 company matches for data labeling and annotation services associated with India as of November 2026 and tracks 5,003 professional contacts across them, including 364 with verified work emails. Bangalore is the largest hub.

This list covers company matches for data labeling and annotation services associated with India, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
194Companies
5,003Contacts tracked
364Verified emails
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The 22 largest data labeling and annotation services based in India

Ranked by team size
Top 22 of 194 company matches for data labeling and annotation services based in India, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchChennai, IndiaHQ recorded Nov 6, 2026201-500250 contacts →

Exact match

“Infosearch BPO Services is one of the leading Annotation, BPO, Data Management and Call Center services firm based at Chennai, India.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchMysuru, IndiaHQ recorded Nov 6, 2026201-500248 contacts →

Exact match

“Experts in Digital world”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchBangalore, IndiaHQ recorded Nov 6, 202651-200171 contacts →

Exact match

“Welcome to TAGFact, your premier media intelligence and data annotation/labeling solution.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchBangalore, IndiaHQ recorded Nov 6, 202651-200108 contacts →

Exact match

“Fueling the AI age.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchVaranasi, IndiaHQ recorded Nov 6, 202651-20073 contacts →

Exact match

“We are a global outsourcing company excelling in a broad range of B2B services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchBangalore, IndiaHQ recorded Nov 6, 202651-20071 contacts →

Exact match

“With AI and machine learning being evolved as the fastest-growing technologies that offer incredible innovations that benefit various sectors of the global economy, Annotations &…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchKolkata, IndiaHQ recorded Nov 6, 202651-20060 contacts →

Exact match

“Frinksyn which is situated in West Bengal, India, where we provide workforce support for AI/Machine Learning Data Annotation and Content Moderation services, Having business…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchLucknow, IndiaHQ recorded Nov 6, 202651-20056 contacts →

Exact match

“Sakhsham Knowledge Services provides human-in-the-loop, plug-and-play process support services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchBangalore, IndiaHQ recorded Nov 6, 202651-20054 contacts →

Exact match

“At Humanifi.ai, we're driving the synergy between humans and AI across industries.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchHyderabad, IndiaHQ recorded Nov 6, 202651-20045 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchBangalore, IndiaHQ recorded Nov 6, 202611-5041 contacts →

Exact match

“Cognegica Networks is the Bharat-Native AI Data Foundry, the AI data services company built for the languages the global web forgot.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchGwalior, IndiaHQ recorded Nov 6, 202611-5035 contacts →

Exact match

“Thank you for taking the time to explore my Company!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchAhmedabad, IndiaHQ recorded Nov 6, 202611-5033 contacts →

Exact match

“Are you struggling to find high-quality real-world unbiased training data for your machine-learning algorithms?”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchMumbai, IndiaHQ recorded Nov 6, 202611-5030 contacts →

Exact match

“FutureSmart AI provides custom Natural Language Processing (NLP) solutions for companies looking to get ahead of the future.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchBangalore, IndiaHQ recorded Nov 6, 202611-5027 contacts →

Exact match

“Taskmonk is an all-in-one data labeling platform that empowers businesses to train powerful Enterprise-AI models with ease.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchChennai, IndiaHQ recorded Nov 6, 202651-20022 contacts →

Exact match

“Data processing requires precise labelling in order to produce the desired machine learning model.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchMalda, IndiaHQ recorded Nov 6, 202651-20022 contacts →

Exact match

“Knuckle Head Corporation provides a whole gambit of Artificial Intelligence based services for various industries, such as : Healthcare, Finance, E-commerce, Retail, Telecom &…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchIndiaHQ recorded Nov 6, 202651-20014 contacts →

Exact match

“Our image annotation experts, tools and our talented domain experts with years of experience ensure your image annotation projects are efficiently implemented.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchMannarkkad, IndiaHQ recorded Nov 6, 20261-1011 contacts →

Exact match

“Loopernode Technologies is an Enterprise AI Data Services company specializing in high-quality data collection, data annotation, and AI training datasets.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchKolkata, IndiaHQ recorded Nov 6, 202611-507 contacts →

Exact match

“AI-enabled Data Collection and Annotation for all data formats!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchGurgaon, IndiaHQ recorded Nov 6, 2026501-1,0003 contacts →

Exact match

“ScaleOps delivers Fully managed, Hi Quality Data labeling from a secure data center.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchDelhi, IndiaHQ recorded Nov 6, 202611-501 contacts →

Exact match

“At dfAIn, define your AI strategy with human labeled data sets, worked on by our global community of qualified contributors available 24/7, across all languages and file types!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 22 of 194 data labeling and annotation services based in India

See the full list, filter by size, metro and specialty, and access 364 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Data labeling and annotation services based in India at a glance

As of Nov 6, 2026
7.3%Verified-email coverage
25.8Average contacts per company
11-50Median size (employees)
11.3%Largest-city concentration · Bangalore
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
44
11-50
86
51-200
39
201-500
19
501-1,000
4
1,001-5,000
2

Email recency for this list is measured worldwide rather than for India, so it is reported there. Company counts and contact totals on this page are exact for India, over 194 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with India whose business descriptions match “data labeling and annotation services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 364 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “data labeling and annotation services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many data labeling and annotation services are there based in India?

RevenueBase identified 194 company matches for data labeling and annotation services associated with India as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Infosearch BPO Services PVT LTD tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most data labeling and annotation services?

Bangalore leads with 22 company records, followed by Kolkata (13) and Hyderabad (11).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 364 professional contacts with verified work emails tracked across these 194 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.