What is Classer?
Classer is an AI text classification API built for production. Classify and tag text with a single API call — no training, no fine-tuning required.From $0.08/1M tokens
10M free tokens/month to get started
Real-time latency
Fast enough for real-time applications
Zero training
Works out of the box — just pass labels
Classify and tag
Classify picks the single best label. Tag returns all labels above a confidence threshold.Fast Batch processing
Classify millions of texts in under 15 minutes at $0.08/1M tokens. Upload an NDJSON file (up to 5GB), start the job, and download results when done. See the Fast Batch guide for the full workflow.Use cases
- Support ticket routing — Route tickets to billing, technical, or sales
- Lead scoring — Score inbound leads as hot, warm, or cold
- Content moderation — Detect spam, toxicity, or inappropriate content
- Document tagging — Auto-tag articles with multiple categories
Get started
Quickstart
Up and running in 5 minutes
API Reference
Full endpoint documentation
Python SDK
pip install classer
TypeScript SDK
npm install classer-ai