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2.8 Billion Labels Delivered

Turn domain expertise into AI-ready training data

AnnotRift combines expert human annotators with intelligent automation to deliver the highest quality labeled datasets for machine learning. From SFT to RLHF, we power the world's most ambitious AI projects.

Start Labeling Explore Platform
99.4% Accuracy Rate
1.5M+ Expert Annotators
500+ Enterprise Clients
AnnotRift Studio — Project: Autonomous Driving v3.2
Street scene for annotation
Car (0.97)
Pedestrian (0.94)
Stop Sign (0.99)
Bicycle (0.91)
Car 12
Pedestrian 8
Stop Sign 3
Bicycle 5

Trusted by the teams building the future of AI

Core Capabilities

Everything you need to build world-class AI

From supervised fine-tuning to reinforcement learning from human feedback, AnnotRift provides the complete data infrastructure for modern AI development.

Data Labeling at Scale

Bounding boxes, semantic segmentation, polygon annotation, keypoints, and cuboids. Support for image, video, text, audio, and 3D point clouds with pixel-perfect precision.

  • Multi-frame video tracking
  • Instance & panoptic segmentation
  • 3D LiDAR annotation
  • OCR & document parsing
Explore annotation tools →

RLHF & Alignment

Preference ranking, constitutional AI feedback, red-teaming, and instruction tuning. Our expert annotators help align your models with human values and domain expertise.

  • Pairwise preference comparison
  • Multi-turn conversation rating
  • Safety & toxicity evaluation
  • Domain-specific SFT data
Learn about RLHF →

Model Evaluation

Benchmark your models against ground truth with human-in-the-loop evaluation. Measure accuracy, detect hallucinations, and identify failure modes before deployment.

  • Hallucination detection
  • Factual accuracy scoring
  • A/B model comparison
  • Custom evaluation rubrics
See evaluation tools →
How It Works

From raw data to AI-ready labels in 4 steps

Our end-to-end pipeline handles everything from data ingestion to quality-assured export.

📤
Upload Data
Images, video, text, audio, 3D point clouds
→
🤖
AI Pre-label
Model generates initial predictions automatically
→
👨‍💻
Human Review
Expert annotators refine & validate labels
→
✅
Export
COCO, YOLO, VOC, Parquet, custom formats
5x
Faster than manual labeling
60%
Cost reduction vs. in-house
99.4%
Average label accuracy
"AnnotRift reduced our labeling costs by 60% while improving accuracy from 94% to 99.2%. The quality of their annotator workforce is unmatched."
— Dr. Sarah Chen, VP of AI, Autonomous Driving Division
Platform

Built for teams that demand precision

Every feature designed to maximize annotation quality while minimizing time-to-delivery.

Intelligent Annotation Studio

Our browser-based annotation environment supports 20+ annotation types with AI-assisted pre-labeling that accelerates workflows by 5x. Smart tools predict your next annotation, auto-complete polygons, and propagate labels across video frames.

  • AI-assisted pre-labeling with model-in-the-loop
  • Real-time collaboration with multi-user editing
  • Custom ontology builder with hierarchical taxonomies
AnnotRift Studio — Annotation Editor
Vehicle 0.96
Person 0.93
Sign 0.98
Vehicle 12
Person 8
Sign 5
AI Pre-label: ON

Quality Assurance Dashboard

Monitor annotation quality in real-time with consensus scoring, inter-annotator agreement metrics, and automated quality checks. Set custom thresholds and get alerts when quality dips below your standards.

  • Multi-stage review workflows (annotate → review → approve)
  • Consensus scoring with configurable agreement thresholds
  • Automated outlier detection and flagging
Quality Dashboard ● Live
99.2%
Accuracy
0.94
IAA Score
2.1s
Avg Time
Quality Trend (7 days)

Workforce Management

Access our global network of 1.5M+ vetted annotators or bring your own team. Intelligent task routing matches the right annotators to the right projects based on skill, language, and domain expertise.

  • Skill-based routing with 200+ specialization tags
  • Performance tracking with annotator leaderboards
  • 24/7 global coverage across 40+ languages
Workforce Overview
1,847
Active Annotators
42
Languages
Top Skills
Medical Imaging NLP/NER Autonomous Driving RLHF Document AI 3D LiDAR
Data Modalities

Label any data type, any format

Our platform natively supports all major data modalities with specialized tooling for each.

Image

Bounding boxes, polygons, segmentation masks, keypoints, classification

Video

Object tracking, temporal segmentation, action recognition, frame-by-frame labeling

Text & NLP

Named entity recognition, sentiment analysis, text classification, relation extraction

Audio

Speech transcription, speaker diarization, sound event detection, emotion recognition

3D & LiDAR

Point cloud annotation, 3D cuboids, sensor fusion, lane marking, HD mapping

Documents

PDF parsing, table extraction, form understanding, invoice processing, layout analysis

Integrations

Connects to your entire ML stack

Seamlessly integrate with your existing tools and pipelines. Export in any format, sync with any platform.

AWS SageMaker
Google Vertex AI
Hugging Face
Azure ML
Databricks
Snowflake
Weights & Biases
MLflow

Export Formats

COCO JSON Pascal VOC YOLO CVAT Parquet TFRecord JSONL Custom Schema
Customer Stories

Trusted by AI teams worldwide

★★★★★
"We evaluated every major labeling platform before choosing AnnotRift. The combination of annotator quality, turnaround speed, and their RLHF capabilities made it an easy decision. Our model performance improved 23% after switching."
James Rodriguez
James Rodriguez Head of ML, Autonomous Systems Inc.
★★★★★
"AnnotRift's medical imaging annotation team is exceptional. They understood HIPAA requirements from day one, and their radiologist-level annotators delivered segmentation masks that our models could actually learn from. Game changer for our diagnostic AI."
Dr. Emily Park
Dr. Emily Park CTO, MedVision AI
★★★★★
"We needed 50,000 preference comparisons for our RLHF pipeline in two weeks. AnnotRift delivered 62,000 with 99.1% inter-annotator agreement. Their managed workforce and quality tooling are years ahead of the competition."
Marcus Wei
Marcus Wei VP of AI Research, LinguaForge
Trust & Security

Enterprise-grade security for sensitive data

Your data never leaves your control. We maintain the highest security standards with end-to-end encryption, role-based access, and full audit trails.

SOC 2 Type II

Independently audited security controls

ISO 27001

Certified information security management

GDPR

Full EU data protection compliance

HIPAA

Healthcare data handling certified

End-to-end encryption (AES-256)
VPC deployment options
Role-based access control (RBAC)
Complete audit trail & logging
On-premise deployment available
Data residency in 12 regions
Pricing

Plans that scale with your AI ambitions

Start small and grow. No minimum commitments, pay only for what you label.

Starter

For teams exploring data labeling

$0.02 / label
  • Up to 50,000 labels/month
  • 5 annotation types
  • Basic quality checks
  • Email support
  • COCO & YOLO export
  • 1 project workspace
Get Started Free
Most Popular

Professional

For production ML teams

$0.008 / label
  • Unlimited labels
  • All 20+ annotation types
  • Advanced QA with consensus
  • Priority support + Slack
  • All export formats
  • Unlimited workspaces
  • API access & webhooks
  • Custom ontologies
Start Free Trial

Enterprise

For organizations with complex needs

Custom  
  • Everything in Professional
  • Dedicated annotator teams
  • On-premise deployment
  • Custom SLAs (99.99% uptime)
  • HIPAA & SOC 2 compliance
  • Dedicated success manager
  • Volume discounts
  • Custom integrations
Contact Sales

Start building better AI today

Join 500+ companies using AnnotRift to create the training data that powers the next generation of AI. Get started in minutes with our self-serve platform or talk to our team about managed services.

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2.8B+ Labels delivered
99.4% Average accuracy
4hrs Avg. turnaround