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Access the most comprehensive collection of curated AI training datasets for machine learning and deep learning applications.

Featured Datasets

Curated collections for computer vision, natural language processing, time-series analysis, and more.

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ImageNet-25K

25,000 high-resolution images across 1,000 categories for object recognition tasks.

Computer Vision Classification 25K Samples
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NLP Corpus 2023

5 million annotated sentences for natural language processing and text generation models.

NLP Text Processing 5M Samples
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Financial Time Series

10 years of minute-level data for 500 stocks with 50+ technical indicators pre-calculated.

Time Series Finance 10 Years
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Urban Landscapes

50,000 annotated images of cityscapes for semantic segmentation and autonomous driving research.

Segmentation Autonomous Vehicles 50K Samples
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Mobile Sensor Data

Accelerometer and gyroscope readings from 10,000 devices for activity recognition models.

Sensor Data Activity Recognition 10K Devices
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Voice Command Samples

100,000 audio clips across 50 languages for voice recognition and speech-to-text applications.

Audio Speech Recognition 100K Clips

Contribute to the Community

Share your datasets with researchers worldwide and get recognition for your contributions.

Upload Guidelines

  • Datasets must be properly documented
  • Include clear licensing information
  • Provide sample data for preview
  • Minimum 1,000 samples for quality

Drag & Drop Your Files

Supported formats: CSV, JSON, ZIP, PNG, JPG

Why Choose Data Nexus

Our platform is designed to accelerate your AI research with high-quality, well-documented datasets.

Lightning Fast

Optimized downloads with global CDN distribution for maximum transfer speeds.

Secure & Private

End-to-end encryption for sensitive datasets with strict access controls.

Standardized Formats

All datasets follow consistent schemas for easy integration with your pipelines.

Quality Verified

Rigorous validation process to ensure data accuracy and completeness.

Version Control

Track changes and updates to datasets with full version history.

Cloud Integration

Directly stream datasets to AWS, GCP, or Azure with our connectors.

By The Numbers

Join thousands of researchers and organizations advancing AI with our platform.

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API Access

Integrate directly with our platform using our comprehensive REST API. Query, download, and manage datasets programmatically.

  • Full CRUD operations for dataset management
  • OAuth2 authentication with scoped permissions
  • Webhook support for real-time notifications
View API Docs
api-example.js
// Search for image datasets
const response = await fetch('https://api.datanexus.ai/v1/datasets', {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer YOUR_API_KEY',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    query: 'computer vision',
    filters: {
      type: 'image',
      min_samples: 10000
    },
    limit: 5
  })
});

// Stream dataset directly to storage
const dataset = await fetch('https://api.datanexus.ai/v1/datasets/DS-123/download', {
  headers: {
    'Authorization': 'Bearer YOUR_API_KEY'
  }
});

// Pipe to AWS S3 or other storage
const upload = await s3.upload({
  Bucket: 'your-bucket',
  Key: 'datasets/DS-123.zip',
  Body: dataset.body
}).promise();

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