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

# Baseten

> Baseten runs open-weight frontier models (GLM, DeepSeek, Kimi, gpt-oss, Nemotron) on dedicated US infrastructure through an OpenAI-compatible API, and also hosts custom fine-tuned models as production endpoints.

Baseten offers 12 models through Lava's AI Gateway, supporting Chat Completions. Authentication uses `Authorization: Bearer`. See the [Baseten API docs](https://docs.baseten.co) for provider-specific parameters.

<Info>Supports both **managed** (Lava's API keys) and **unmanaged** (bring your own credentials) mode.</Info>

## Quick Start

```typescript theme={null}
const response = await fetch('https://api.lava.so/v1/forward?u=https%3A%2F%2Finference.baseten.co%2Fv1%2Fchat%2Fcompletions', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    Authorization: `Bearer ${forwardToken}`,
  },
  body: JSON.stringify({
    model: 'baseten-glm-5.2-fast',
    messages: [{ role: "user", content: "Hello!" }],
  }),
});
```

## Chat Completions

**Target URL:** `https://inference.baseten.co/v1/chat/completions`

|                  |                                          |
| ---------------- | ---------------------------------------- |
| **Content Type** | `application/json`                       |
| **Streaming**    | Yes (set `stream: true` in request body) |

| Model                          | Input / 1M tokens | Output / 1M tokens |
| ------------------------------ | ----------------- | ------------------ |
| baseten-kimi-k3                | \$3.00            | \$15.00            |
| baseten-glm-5.2-fast           | \$2.10            | \$6.60             |
| baseten-deepseek-v4-pro        | \$1.74            | \$3.48             |
| baseten-glm-5.2                | \$1.40            | \$4.40             |
| baseten-inkling                | \$1.00            | \$4.05             |
| baseten-kimi-k2.7-code         | \$0.95            | \$4.00             |
| baseten-kimi-k2.6              | \$0.95            | \$4.00             |
| baseten-glm-4.7                | \$0.60            | \$2.20             |
| baseten-nemotron-3-ultra       | \$0.60            | \$2.40             |
| baseten-inkling-small          | \$0.50            | \$1.20             |
| baseten-deepseek-v4-flash-0731 | \$0.13            | \$0.26             |
| baseten-gpt-oss-120b           | \$0.10            | \$0.50             |

## Next Steps

<CardGroup cols={2}>
  <Card title="All Providers" icon="grid" href="/docs/gateway/supported-providers">
    Browse all supported AI providers
  </Card>

  <Card title="Forward Proxy" icon="route" href="/docs/gateway/forward-proxy">
    Learn how to construct proxy URLs and authenticate requests
  </Card>
</CardGroup>