Free / Open-sourceOpen-source model and dataset hub with one-click online demos
Free / Open-sourceOpen-source model and dataset hub with one-click online demos
Defined.ai records 146,251 monthly visits with -21% month-over-month growth and Contact for Pricing pricing. WAChecker — Bulk WhatsApp Number Checker records 4,088 monthly visits with +112.6% growth and freemium pricing.
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | definedcrowd.com | wachecker.wadesk.io |
| Pricing Model | Contact for Pricing | freemium |
| Monthly Visits | 146.25K (146,251) | 4.09K (4,088) |
| MoM Traffic Delta | -38.82K (-21%) | +2.17K (+112.6%) |
| Primary Market & Share | 🇺🇸 United States (20.6%) | 🇮🇳 India (54.5%) |
| Direct Visits / mo | 84.42K | 1.66K |
| User Rating | 4.4 | 3.8 |
| Supported Platforms | Website | Website |
Enterprise AI training data, annotation and evaluation services
A large selection of ready-to-use, ethically sourced datasets across audio, image, video, text and multimodal formats, with advanced filtering and free samples.
Expert-verified labeling for text, audio, image and video using model-first, human-in-the-loop workflows for accuracy and fairness.
High-quality multilingual content for global AI systems, drawing on 500+ languages, dialects and locales.
Global, diverse data collection at scale for training, with privacy and security vetting on every dataset.

Verify WhatsApp registration status for whole contact lists in a Chrome extension, then export the valid numbers to Excel.
Paste numbers one per line or import an XLSX list and check WhatsApp registration status in bulk through your current WhatsApp Web session.
Sort results into registered, not-found, and pending with one click, and automatically mark duplicate numbers before outreach.
Set checking intervals to run long validation tasks at a controlled speed that fits your workflow.
Export the filtered valid numbers to Excel, including status, original number, and formatted international number for CRM import.
Free / Open-sourceOpen-source model and dataset hub with one-click online demos
Free / Open-sourceOpen-source model and dataset hub with one-click online demos
Pull TikTok comments into CSV or Excel without logging in
Free / Open-sourceStreamlines computer vision dataset annotation and model deployment, but lacks the broad human crowd-sourcing services of Defined.ai.
Free / Open-sourceStreamlines computer vision dataset annotation and model deployment, but lacks the broad human crowd-sourcing services of Defined.ai.

SpecialistWeb data infrastructure for scraping, proxies, and AI-ready datasets
SpecialistWeb data infrastructure for scraping, proxies, and AI-ready datasets

Comprehensive enterprise data labeling platform with powerful automation agents, but carries significant pricing overhead for smaller teams.
Comprehensive enterprise data labeling platform with powerful automation agents, but carries significant pricing overhead for smaller teams.

SpecialistAgent observability, evaluation, and continuous improvement for production AI
SpecialistAgent observability, evaluation, and continuous improvement for production AI
Advanced multimodal data infrastructure for computer vision teams, though specialized primarily in video and image annotation.
Advanced multimodal data infrastructure for computer vision teams, though specialized primarily in video and image annotation.

Free / Open-sourceOpen-source data labeling and evaluation platform offering full self-hosting control, but requires manual setup and infrastructure maintenance.
Free / Open-sourceOpen-source data labeling and evaluation platform offering full self-hosting control, but requires manual setup and infrastructure maintenance.

TikTok Shop analytics for products, creators, LIVE commerce and competitors
TikTok Shop analytics for products, creators, LIVE commerce and competitors
Stop chargebacks before they are filed

Provides expert human workforce for AI training and evaluation datasets, though with fewer automated labeling tools.
Provides expert human workforce for AI training and evaluation datasets, though with fewer automated labeling tools.
Scrape any website by chatting with it in plain English
Scrape any website by chatting with it in plain English