# Classer

> AI text classification API. Classify and tag text with a single API call — no training required. From $0.08/1M tokens, under 200ms latency.

## Why Classer over a general-purpose LLM?

Classer is not a wrapper around OpenAI or Anthropic. It runs a 30B-parameter frontier LLM optimized for classification on dedicated GPU infrastructure.

- **Speed** — Under 200ms P95. General-purpose LLMs are moving toward reasoning models (5s+); classification doesn't need chain-of-thought.
- **Cost** — $0.08–$0.60/1M tokens + 10M free tokens/month. Caching makes repeated classifications free.
- **Zero prompt engineering** — No prompts to craft, no output parsing, no format inconsistencies. Structured JSON every time.
- **No model management** — Models upgrade without breaking your integration. No deprecation notices.
- **3 lines of code** — Pass text + labels, get a result.

Best for teams that need classification as a feature, not a project.

## Docs

- [Introduction](https://docs.classer.ai/introduction): What Classer is, code examples, use cases
- [Quickstart](https://docs.classer.ai/quickstart): Get up and running in 5 minutes
- [Authentication](https://docs.classer.ai/authentication): API keys and auth setup
- [Pricing & Limits](https://docs.classer.ai/pricing): Speed tiers, rate limits, free tier, validation limits
- [API Overview](https://docs.classer.ai/api-reference/overview): All endpoints, request/response format, error handling
- [Classify endpoint](https://docs.classer.ai/api-reference/classify): POST /v1/classify — single-label classification
- [Tag endpoint](https://docs.classer.ai/api-reference/tag): POST /v1/tag — multi-label tagging
- [Fast Batch](https://docs.classer.ai/api-reference/batch): Async batch processing for large datasets
- [Python SDK](https://docs.classer.ai/sdks/python): pip install classer
- [TypeScript SDK](https://docs.classer.ai/sdks/typescript): npm install classer-ai

## Full context

- [llms-full.txt](https://docs.classer.ai/llms-full.txt): Complete API reference for AI consumption