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Discover Best AI Tools for Data annotation

This page shows you the best Data annotation tool in AI websites and tools, and free Data annotation tool in AI.

The best ai tools for Data annotation are: Labelbox, Super Annotate, Isahit, OpenTrain AI, ModAstera, Centrox AI, Your Personal AI, Oda AI Studio, Epigos AI, AI Data Collection Company.

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Updated time:September 29 2026
Labelbox
AI data factory for building, operating, and staffing AI data.
SuperAnnotate
Platform for streamlining AI data annotation and evaluation workflows.
Isahit
Ethical human-driven AI & data labeling, fine-tuning, and processing.
OpenTrain AI
Global marketplace for vetted human AI data experts and managed labeling services.
ModAstera
Automates medical AI development, accelerating R&D, cutting costs, and ensuring compliance.
Centrox AI
Centrox AI provides tailored AI solutions and full-cycle Gen AI development services for businesses.
Your Personal AI
Your Personal AI provides tailored AI and ML solutions for businesses globally.
Oda Studio
AI solutions for complex data, transforming it into actionable insights.
Epigos AI
Epigos AI: simplifies AI computer vision model creation and deployment for businesses.
Globose Technology Solutions (GTS)
GTS: AI dataset collection and annotation services for machine learning models.
Pangeanic
AI translation and virtual assistant solutions for multilingual content delivery and automation.
Grably
Grably: Sell your data to AI companies and access diverse AI training datasets.
PoYo.AI
High concurrency. Stable AI API. Better pricing.
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xData
Decentralized data network using AI and crypto for data collection and monetization.
Free
Encord
Encord is a data platform for computer vision teams to build and deploy AI models.
MD.ai
Medical imaging AI platform for radiology reporting and annotation.
AIxBlock
Decentralized AI development platform with compute, models, and human validators.
LangWatch
LLM observability and evaluation platform for monitoring, evaluating, and optimizing LLM applications.
clickworker
Crowdsourcing platform for AI training data and data management services.
Appen
Appen provides data and services to improve AI model performance and accelerate AI development.
Innovatiana
Ethical data labeling outsourcing for AI models with a focus on quality and impact.
Annotab Studio
Data annotation and management platform for AI model development and collaboration.
BasicAI Cloud
Free AI-powered training data platform with annotation tools and teamwork management.
Free
Unitlab
AI-powered data annotation platform for accurate machine learning labels and efficient collaboration.
LEGOAI
GenAI-powered analytics platform simplifying AI for enterprises with self-serve analytics.
Free
Anote
AI-assisted data labeling tool using few-shot learning for unstructured text data.
PixtaAI
PixtaAI offers data annotation, collection, and licensing for AI/ML/CV projects.
D
DataDep
Data collection, annotation, and neural network training services.
People For AI
French data labeling company providing high-quality training data for AI algorithms.
syntheticAIdata
Synthetic data generation platform for training vision AI models, ensuring privacy and compliance.

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