> ## Documentation Index
> Fetch the complete documentation index at: https://docs.tera.gw/llms.txt
> Use this file to discover all available pages before exploring further.

# Introduction

> Tera is an OpenAI-compatible inference API serving high-quality open-weight models.

## What is Tera?

Tera is a hosted inference provider for open-weight language models — Llama, Qwen, DeepSeek, Mistral, and more. The API is OpenAI-compatible, so existing OpenAI SDKs and tools work without modification — point them at `https://api.tera.gw` with your Tera API key.

We're a pure execution layer for the open ecosystem. **US team, US-owned GPUs, US data centers.** No proprietary model to upsell you to — we focus on per-token economics on the models developers actually ship. Prompts and completions are processed and discarded: **zero retention, zero training, zero human review.**

## What's available today

* **Chat completions** — `POST /v1/chat/completions`
* **Text completions** — `POST /v1/completions`
* **Model catalog** — `GET /v1/models`
* **Text-to-speech** — `POST /v1/audio/speech` (Kokoro)
* **Streaming** via Server-Sent Events
* **Reasoning models** — Qwen3.5 surfaces chain-of-thought traces as a separate `reasoning_content` field
* **Tool calling** — OpenAI-compatible `tools` and `tool_choice`

## Where to start

<CardGroup cols={2}>
  <Card title="Quickstart" icon="bolt" href="/quickstart">
    Make your first request in 60 seconds with curl, Python, or Node.
  </Card>

  <Card title="Authentication" icon="key" href="/authentication">
    How API keys work and how to request one.
  </Card>

  <Card title="Models" icon="microchip" href="/models/overview">
    What's deployed, context lengths, pricing.
  </Card>

  <Card title="OpenAI compatibility" icon="arrow-right-arrow-left" href="/concepts/openai-compat">
    What carries over from OpenAI clients, what's different.
  </Card>
</CardGroup>