# Model Providers

Trait contracts and implementations for LLM, TTS, transcription, and image generation backends.

## Files

- [tts.md](tts.md) — Text-to-Speech: trait, manager, provider catalogue, tts_models DB table
- [transcribe.md](transcribe.md) — Speech-to-Text: OpenAI-compatible audio API, transcribe_models DB table
- [image.md](image.md) — Image generation: trait, manager, async task system, LLM tools, REST endpoint

See [../index.md#model-providers](../index.md#model-providers) for navigation. See also [../llm-clients.md](../llm-clients.md) for LLM client trait and selection.