Best Free AI & Machine Learning APIs

IBM Watson AI text analytics: keyword extraction, sentiment, and semantic concepts

Google Cloud NLP: entity recognition, sentiment analysis, and syntax trees

Cloudmersive NLP: text translation, language detection, and sentence sentiment

High-performance transformer and spaCy NLP models for entity extraction and summarization

Free and open-source machine translation engine powered by Argos Translate

Detect the written language of any string of text with high precision

Fast, high-volume machine translation API supporting multiple language pairs

Perspective API: machine learning models scoring toxicity and harassment in text

Computer vision AI platform for image classification, visual search, and moderation

Automated visual image recognition, smart auto-cropping, and color analysis

Facial recognition, NSFW content filtering, and age estimation computer vision

Pre-trained computer vision datasets, YOLO object detection models, and edge exports

Open-source visual analysis API for local image categorization with zero limits

Real-time AI visual moderation for detecting violence, weapons, and adult content

Computational intelligence engine calculating answers to natural language questions

Event data streaming, customer analytics pipelines, and interactive dashboard charts

IBM Watson natural-sounding neural text-to-speech voice generation

Time series anomaly detection, automated metric forecasting, and analytics

Customized conversational AI chatbots and personalized chat flows