Data Annotation Service
The best 50 Data Annotation Service AI tools - Free & Paid
Explore 50 AI for Data Annotation Service
Datature unifies data labeling, model training, and deployment in one workflow. AIāassisted annotation cuts labeling time up to tenfold. It supports classification, detection, segmentation, keypoint tasks, offers dragāandādrop training, hyperparameter tuning, visual evaluation, and edge/cloud deploy
Free
Data Services by Clickworker provides a crowdsourced platform for data collection, validation, labeling, and categorization, assigning microtasks to a global workforce. It delivers scalable, ISOāÆ27001ācompliant results and transparent workflow tracking for AI training and market research.
Freemium
- $13
Appen delivers humanāvalidated datasets across six domainsāalignment, agentic AI, speech/audio, multimodal, physical, and model integrityāusing automation and a global workforce of 1āÆmillion+ contributors. SOCāÆ2/ISOāÆ27001 certified, it supports largeāscale AI training and independent evaluation.
Freemium
BasicAI is an endātoāend data annotation platform for image, video, audio, LiDAR, and text, offering AIāpowered labeling, collaborative workflows, realātime QA, and private deployment, used by ML engineers in autonomous driving, robotics, and logistics.
Paid
Innovatiana provides data labeling outsourcing services for AI models, specializing in various data types. Focusing on ethical practices, it offers competitive rates and data security, ensuring high-quality labeled data for AI model training across multiple industries.
Freemium
- $49/mo
People for AI offers dedicated ināhouse labeling teams for diverse machineālearning datasets, ensuring consistent quality, data security, and GDPRāaligned handling. They support all annotation tools, from small proofs of concept to large production volumes, with continuous monitoring and reāannotati
Freemium
Encord is a data development platform that streamlines data curation, labeling, and model evaluation for AI teams. It supports computer vision and multimodal tasks with advanced user management, customizable workflows, and comprehensive quality metrics.
Subscription
Markup Annotation Tool converts unstructured data into structured datasets, streamlining the annotation process for NLP and ML applications. Powered by GPT-4, it enhances accuracy and efficiency, supporting rapid training dataset creation for improved model performance.
Free
UnitLab is a cutting-edge, collaborative AI data annotation platform boosting efficiency by 15x through auto-annotation tools. It excels in various annotation types, project management, and automated tasks for accurate object detection and OCR in 123 languages.
Subscription
Agentic Document Extraction pulls structured data from PDFs, images, spreadsheets using visionāfirst parsing, preserving layout and delivering boundingābox citations. Modular REST APIs and Python/TypeScript SDKs support onāprem or cloud deployment for regulated sectors needing traceable, accurate ex
Subscription
- $250/mo
isahit provides human-centered data labeling and processing for computer vision, NLP, and speech, offering collaborative workspaces, secure API, customizable annotator training, quality control, and AI-assisted workflows (active learning, RLHF, RAG) to prepare data for model training.
Subscription
Databar.ai is a data enrichment platform that connects to 100+ data providers and AI services. It imports company/lead lists, adds 450+ enrichment fields via dragāandādrop, syncs with major CRMs, and offers realātime intent signals for targeted outbound campaigns.
Subscription
- $99/mo
MD.ai automates radiology reporting and dataset annotation, handling template selection, key finding mapping, impression generation, billing codes, and patient audio summaries. It integrates with HL7/DICOM, offers secure PHI detection, multilingual support, and AIāassisted annotator for highāquality
Freemium
Semantic Scholar indexes 230āÆmillion papers, offering AIāpowered semantic search that prioritizes relevance and citation impact. It provides contextual PDF annotations, a developer API, and export options for literature reviews, grant research, and teaching.
Free
FiftyOne is a visual AI platform that centralizes data curation, annotation, and model evaluation across images, video, point clouds, and metadata. It offers interactive slicing, automatic labeling with confidence scoring, roleābased access, versioning, and openāsource integration.
Free
Label Studio is an openāsource platform for labeling images, audio, text, video, timeāseries, and PDFs. It offers customizable interfaces, preālabeling with ML, multiāproject support, API/SDK integration, and quality gates that ensure consistent annotations, with export to CSV or databases.
Freemium
- $10
Secoda centralizes data cataloging, metadata management, and lineage tracking, offering AIādriven search, query monitoring, and quality scoring. It provides roleābased access, CI/CD impact analysis, and realātime observability dashboards to streamline workflows.
Free
DALLĀ·2 is an AI system that generates realistic images and art based on natural language descriptions, allowing users to edit and create variations. Safety measures are in place to prevent harmful content.
Usage based
Indico Intake and Orchestration Platform automates ingestion, enrichment, and routing of unstructured insurance dataāextracting emails, PDFs, SOVs, loss runs, and ACORD forms into structured, validated outputs for underwriting, claims, and policy servicing, with realātime processing and AIādriven en
Freemium
DataCamp provides interactive courses, hands-on projects, and role-based career and skill tracks for data science, ML, and AI. It covers Python, R, SQL, cloud platforms, LLMs, and MLOps, plus team analytics and customizable learning paths.
Freemium
Oda Studio applies VisionāLanguage AI to automatically extract metadata from architectural drawings, convert charts into text, and fineātune generative models for media. It offers endātoāend data annotation, compute provisioning, and evaluation pipelines for enterpriseāscale insight generation.
Subscription
AssemblyAI offers realātime and batch speechātoātext transcription across 99+ languages, featuring speaker diarization, sentiment analysis, and language identification. It supports medical terminology, PII redaction, and custom prompts for precise conversational insights.
Freemium
- $0.37
DataBrain is an embedded analytics platform that gives product teams and developers interactive dashboards, selfāservice reporting, and AIāpowered insights. Its lowācode interface and SDK let users customize visualizations, connect to multiple data sources, and embed analytics into applications.
Subscription
- $999/mo
TwelveLabs extracts structured data from videos using AI models Marengo and Pegasus. Its APIs enable timeābased search, onādemand summarization, and vector embeddings for semantic search and recommendations, supporting media, advertising, and security workflows.
Freemium
- $0.07
SyntheticAIdata is a noācode synthetic data platform that generates largeāscale, fully annotated computer vision datasets. It eliminates privacy concerns, reduces manual labeling, and supports cloud integration for rapid, balanced, inclusive model prototyping.
Free trial
Doubao AI is an allāināone desktop and web assistant for drafting and editing text, translating multilingual content, generating images from prompts, analyzing documents for summaries and key facts, performing AI-powered web search, and providing code assistance.
Freemium
super.AI converts unstructured documents into structured data using LLMs, guiding users through upload, classify, extract, and validate steps. It supports 500+ layouts, multiple languages, codeāfree workflow building, and realātime ERP/database sync for finance, logistics, insurance, and supplyāchai
Free
Databass AI is an audio manipulation tool that offers text-to-audio conversion, stem splitting, and vocal styling. It enhances creativity for musicians and producers by streamlining workflows and enabling innovative sound design through community support.
Subscription
Roboflow streamlines computerāvision projects by offering a lowācode pipeline for data annotation, GPUāaccelerated training, and multiāenvironment deployment. It integrates with PyTorch, TensorFlow, Hugging Face, major clouds, and meets SOC2 TypeāÆ2 and HIPAA security.
Freemium
Instabase converts large document packets into structured, auditable data using AI agents for crossādocument validation and multiāstep business rules. It dynamically selects models for speed and accuracy, supports privacy, audit trails, and scalable automation.
Free
Anomalo automates data quality across structured, semiāstructured, and unstructured data in cloud lakes and warehouses. Using unsupervised ML, it detects anomalies, validates completeness, enforces governance without code, and offers lineage mapping and KPI tracking.
Subscription
DataLang lets users build chatbots that pull data from SQL databases, cloud services, files, and websites. The stepābyāstep workflow covers data source setup, view creation, GPT training, and deployment via URL, widget, API, or ChatGPT Store.
Freemium
- $19/mo
LightLayer provides scalable, richly annotated egocentric datasetsāsynchronized RGB, audio, IMU, and depthāvia distributed capture coordination, automated collection workflows, and streamlined annotation pipelines to produce delivery-ready data for embodied AI and robotic perception training.
Freemium
AI and data analytics platform delivering endātoāend solutions across multiple sectors. It accelerates experimentation to production, supports data engineering, MLOps, LLMOps, and digital engineering, integrating Databricks, Snowflake, and Google Cloud to shorten insightātoāaction time and boost eff
Subscription
Gamma.AI is a cloud DLP tool integrated with Palo Alto Networks CASB that automatically discovers and classifies data across 150+ SaaS apps with 99.5% accuracy. It offers oneāclick deployment, realātime remediation, and API connectors for SIEM/SOAR integration.
Freemium
T-Rex Label is an intelligent annotation tool that streamlines complex scene annotations across industries like agriculture, logistics, and healthcare, offering quick, accurate labeling through zero-shot detection, enhancing workflow efficiency and data management.
Freemium
devAIceĀ® extracts over 7,000 acoustic parameters via its SDK, Web API, and Unity/Unreal plugāins, delivering realātime voiceāexpression analytics for XR, automotive, robotics, and healthcare. It supports stress and health biomarker detection, emotionāaware interfaces, and GDPRācompliant data handlin
Freemium
Meta AI Demos is a catalog of experimental models and interactive technical demos from Meta Research, enabling developers and researchers to test image/video segmentation and tracking, audio/video generation, embodied agent and 3D localization models, prototype integrations, and evaluate outputs.
Freemium
Analytics Model consolidates data from 500+ connectors, supports onāpremises and cloud sources, and offers naturalālanguage querying to generate charts, pivot tables, and dashboards automatically, enabling nonācoding analysts to obtain instant insights, receive alerts, and integrate via APIs.
Free
Nanonets automatically extracts structured data from invoices, receipts, IDs, and other documents without predefined templates. It offers endātoāend workflows, native CRM/ERP integration, and a visual designer for rapid, noācode deployment across finance, supplyāchain, HR, and legal operations.
Freemium
Data On Demand consolidates structured, unstructured, and streaming data into a single source of truth, providing machineālearningādriven forecasting, anomaly detection, and decision optimization. It offers realātime dashboards, AI alerts, and predictive models in a secure, collaborative workspace.
Free trial
Datascale converts SQL into interactive diagrams, revealing keys and joins without database changes. Engineers trace lineage, design systems, assess normalization, and collaborate with AI to draft specs and refactor plans.
Subscription
The Speak AI tool is a language data analysis and research platform with transcription, data analysis, and sentiment analysis capabilities for various types of media.
Free trial
Autobound aggregates 644 realātime signals from 29 providers, delivering over 250āÆM contactālevel financial, workforce, market, and social events via a subā200āÆms REST API or scheduled CSV/JSON/Parquet exports. It supports AI integrations, OEM licensing, and robust B2B outreach.
Paid
- $18/mo
Prolific offers an APIāfirst platform for gathering highāquality, realāworld data from a diverse participant pool. It provides fully managed collection, audience targeting, and access to domain experts, enabling quick, representative studies for AI development.
Subscription
Scale AI delivers a fullāstack generativeāAI platform that integrates enterprise data, supports fineātuning, RLHF, and model safety evaluation, and enables secure AI agent deployment with complianceācertified cloud infrastructure for regulated and government use.
Freemium