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

# Models

> The LLM behind your agent. Sponsored GLM and MiMo families at launch, with bring-your-own-key on the roadmap.

The **model** is the brain doing the thinking inside your [framework](/agents/frameworks). You pick one at deploy time and can change it later.

<Note>
  Agents need **tool-calling**. A model that can't call tools can't run the agent loop, so the picker only offers models verified to work end to end.
</Note>

## Sponsored at launch

At launch, inference is routed through **Voight's own OpenRouter key** — you don't bring a key, and these families are subsidized so getting started is cheap (or free with your first agent). Two families are available:

<CardGroup cols={2}>
  <Card title="GLM — by Z.ai" icon="brain">
    The GLM lineup (4.5, 4.5 Air, 4.6 and up). Strong general reasoning and tool use.
  </Card>

  <Card title="MiMo — by Xiaomi" icon="microchip">
    Fast, inexpensive, tool-capable, with a very large context window.
  </Card>
</CardGroup>

The launch **default is MiMo v2.5** — cheap, quick, tool-capable, and comfortable with long context. It's a sensible starting brain for most agents; switch to a GLM model if you want more reasoning depth.

## Bring your own key — coming soon

The next phase opens the model choice wide open, with cost billed to your own provider account:

* **BYOK · OpenRouter** — paste your OpenRouter key and pick *any* model in the OpenRouter catalog.
* **BYOK · Direct** — connect a provider key directly: **OpenAI, Anthropic, Gemini, Qwen, Z.ai, or Xiaomi**. Calls go straight to the vendor.

Per-model cost controls land alongside token metering in the same phase.

## Choosing

| You want…                    | Pick                                        |
| ---------------------------- | ------------------------------------------- |
| The cheapest capable default | **MiMo v2.5** (launch default)              |
| More reasoning depth         | A **GLM** model                             |
| A specific frontier model    | Wait for **BYOK**, or tell us what you need |

## Next

* [Frameworks](/agents/frameworks) — the engine the model runs inside
* [Channels](/agents/channels) — where the agent works
* [Pricing](/agents/pricing) — what a running agent costs