Data Annotation Services

Optimize Model Development Cycles with Data Annotation Services Built for Speed, Accuracy, and Multi-modal ML Pipelines

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Production-Ready Training Data, Delivered at Scale

Your teams don’t have time to build annotation pipelines from scratch. So, we supply the labeled data, enabling your engineers to stay focused on model development, not data ops.

With SunTec.AI, you get high-accuracy training data for AI at production scale across image, video, text, audio, and 3D sensor inputs. Whether you're working with multiple data types or applying ML to a new industry, use case, or dataset type that may not have well-defined labeling standards yet, our data annotation team ensures that you can move from data collection to model testing without operational slowdowns. The training data you get is immediately usable, organized, consistent, and context-aware, so you don’t need to rework or clean it later. Our workflows are designed for speed and consistency, powered by domain-trained annotation teams, secure infrastructure, and ML-assisted tools, and aligned with your taxonomies, QA standards, and delivery timelines.

Benefits of outsourcing data annotation services to SunTec.ai –

  • Faster time-to-market for AI products or features
  • Improved model accuracy due to consistent, high-quality labels
  • Operational scalability – manage spikes in labeling needs without hiring
  • Focus in-house teams on higher-value model design and tuning

Certified Expertise Backed by Strong Partnerships

Trusted by Leading Enterprises Worldwide

Multi-Format Data Labeling Services for Every ML Pipeline

From static images to unstructured text, sensor data to streaming video, our annotation services are built to handle the complexity and scale of real-world AI use cases. Whether you're training models for vision, language, audio, or multi-modal fusion, we deliver consistent, high-quality labels across formats.

Image Annotation Service

Bounding boxes, pixel-level segmentation, and keypoint tagging for object detection, classification, and pose estimation.

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Video Annotation Service

Frame-by-frame annotation for object tracking, event recognition, and behavior analysis—ideal for surveillance, retail, and autonomous systems.

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Text & Document Annotation Service

Entity extraction, intent classification, sentiment scoring, and document-level tagging for NLP model training across domains.

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Audio Annotation Service

Transcription, speaker identification, and acoustic labeling (e.g., emotion, event detection) for voice AI and audio analytics.

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3D Sensor Fusion Annotation Service

Annotating multi-sensor data (LiDAR, radar, cameras) with cuboids and point cloud segmentation—critical for autonomous vehicles, robotics, and AR.

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Real-Time Data Annotation Service

Low-latency labeling pipelines that support in-stream data processing for use cases like live video feeds, conversational AI, and sensor-driven decision systems.

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Semantic Segmentation Service

Pixel-level classification of visual data, enabling AI/ML models to distinguish between classes within complex scenes, essential for detailed scene understanding in applications like AV perception, medical imaging, and smart cities.

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Expertise across Top Data Annotation Tools (2D, 3D, and Multi-modal)

Labelbox

SuperAnnotate AI

CVAT

Dataloop

Scale AI

V7

Keylabs

Label Studio

labelImg

Segments.ai

CloudCompare

Supervisely

Kognic

Amazon SageMaker Ground Truth

Matching Model Needs and Industry Context with Data Annotation Techniques

We offer a full spectrum of annotation types, from simple shapes to domain-specific taxonomies, so your training data is both technically precise and contextually relevant. Whether you're building models for computer vision, NLP, or multi-sensor fusion, we ensure your labels align with real-world application logic.

Bounding Boxes, Polygons, Cuboids, Keypoints

Geometric annotation formats for object detection, localization, and pose estimation across 2D and 3D data (e.g., vehicles in traffic scenes, facial landmarks in biometrics, product placement in retail).

Semantic & Instance Segmentation

Pixel-level labeling for scene understanding and object differentiation in high-density environments (e.g., tumor regions in medical imaging, road elements in AV data, crowd analysis in public spaces).

Domain-Specific Taxonomies

Custom label structures tailored to your use case and industry context (e.g., anatomical structures in radiology, SKUs in retail, pedestrians and signage in autonomous vehicle data).

Our Data Annotation Services are Built for Quality, Speed, and Control

Annotation at scale isn’t just about labeling—it’s about managing complexity, minimizing risk, and delivering consistent quality under production demands. Our infrastructure, processes, and compliance posture are engineered to give ML teams the operational edge they need to ship faster with confidence.

Quality Assurance You Can Trust

We implement rigorous, multi-layered QA protocols to ensure accuracy and consistency—no matter the data volume or domain complexity.

  • Multi-tier reviews combining human validation and automated checks
  • Gold standard datasets, inter-annotator agreement, and consensus scoring
  • Human-in-the-Loop QA workflows and KPIs defined per project, with clear SLAs

Enterprise-Grade Security & Compliance

Our AI data annotation practices meet the highest standards for data privacy, access control, and regulatory readiness.

  • Certifications and compliance: ISO/IEC 27001:2022, ISO 9001:2015, HIPAA, GDPR
  • Role-based access controls, encryption at rest and in transit
  • Full audit logging and process transparency for regulated industries

Flexible Delivery that Fits Your Stack

Whether you're in prototyping or production, our delivery models adapt to your pipeline needs.

  • Real-time annotation for latency-sensitive applications (e.g., live video, voice assistants)
  • Batch-based pipelines for high-throughput training data generation
  • API integration with your MLOps environment for seamless task routing and result ingestion

Industry-aligned Annotation Support for Real-world Use Cases

From autonomous driving to clinical diagnostics, our annotation services are built to support mission-critical ML applications. We adapt to the data types, compliance needs, and labeling complexity of each domain so your models are trained on inputs that reflect real-world conditions and outcomes.

Industry / Domain

ML Use Cases We Support with Data Labeling Services

Autonomous Vehicles

Object detection, semantic segmentation, LiDAR annotation, multi-sensor fusion

Healthcare & Medical AI

Medical image segmentation, clinical text annotation, diagnosis classification

Retail & eCommerce

Product tagging, shelf detection, visual search, sentiment analysis

Financial Services

Document classification, fraud detection, PII redaction, sentiment in chat logs

Legal & Compliance

Entity extraction, contract review, clause classification, sensitive data tagging

Conversational AI

Audio transcription, speaker diarization, emotion detection, intent recognition

Agriculture & Geospatial

Crop mapping, land segmentation, satellite image classification

Industrial IoT & Robotics

3D sensor annotation, object tracking, anomaly detection in equipment footage

Addressing Top Enterprise Concerns about AI Data Annotation

We handle all major data formats: Image annotation (bounding boxes, segmentation, keypoints), Video annotation (frame-by-frame tracking, event recognition), Text & document labeling (entity extraction, sentiment analysis), Audio annotation (transcription, speaker identification), 3D sensor fusion (LiDAR, radar, camera integration), and Real-time annotation for live data streams.

We maintain 99%+ annotation accuracy through multi-tier review processes, inter-annotator agreement scoring, standardized taxonomies, detailed annotation guidelines, and gold standard datasets. Every project includes human-in-the-loop QA workflows with clear KPIs and SLAs defined upfront.

We're certified for ISO/IEC 27001:2022, ISO 9001:2015, HIPAA, and GDPR compliance. Data is encrypted at rest and in transit, with role-based access controls and full audit logging. We can work within your security requirements including on-premise or hybrid deployments.

Yes, we're HIPAA certified and experienced with regulated data across healthcare, financial services, and other compliance-heavy industries. Our processes include specialized handling for PII, PHI, and other sensitive data types with complete audit trails.

No, we follow your data retention policies and provide certified data destruction. You maintain full ownership and control of your data throughout the engagement.

Timeline depends on data volume and complexity, and is determined during the project scope discussion. We also maintain flexible annotation teams that can scale up for large projects or urgent deadlines.

Yes, we offer real-time annotation services with low-latency pipelines for live video feeds, conversational AI, and sensor-driven systems. Our infrastructure supports both batch processing and real-time streaming annotation.

We offer API integration with your MLOps environment for seamless task routing and result ingestion. We can deliver annotations in your preferred formats and integrate with popular ML platforms and tools.

We support all standard annotation formats (COCO, YOLO, Pascal VOC, etc.) and can deliver in custom formats to match your pipeline requirements. Metadata, quality scores, and audit trails are included with all deliveries.

Yes, we adapt to your preferred annotation tools and can work within your existing workflows. We also provide recommendations for tool optimization based on your specific use cases and scale requirements.

Absolutely. We can develop domain-specific taxonomies tailored to your use case and industry context—from anatomical structures in medical imaging to specific product categories in retail applications.

We don't have strict minimums, but most enterprise projects involve at least 5,000-10,000 annotations to achieve meaningful model training results. We can start with smaller pilots and scale based on results.

Get Enterprise-grade Data Labeling Support

Built for accuracy, scale, and speed—no overhead, no rework.

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