# AI Service

Unified interface for AI providers with runtime switching.

## Provider Pattern

The AI service abstracts two providers behind a common interface:

- **Claude Provider** — Anthropic Claude API (cloud)
- **Ollama Provider** — Local Ollama instance (private)

Both implement: `summarize()`, `explain_term()`, `generate_mindmap()`, `deep_dive()`

## Switching Providers

The active provider is set in `backend/infra/config.py` via `AI_PROVIDER` and can be changed at runtime.

## Source Code
```{eval-rst}
.. automodule:: backend.services.ai_service
   :members:
```