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

# Model Tiers

> Understand the free, basic, and premium model tiers and what they include.

Every model on ShuttleAI is assigned a **tier** that determines the minimum plan required to use it. Higher-tier models generally offer better reasoning, larger context windows, or are from frontier providers.

## Tier breakdown

### Free tier

Available to everyone — no plan required.

| Model        | Provider | Context | Notes                              |
| ------------ | -------- | ------- | ---------------------------------- |
| GPT-OSS 20B  | OpenAI   | 131K    | Lightweight open-source model      |
| GPT-OSS 120B | OpenAI   | 131K    | High-performance open-source model |

Free-tier models are ideal for experimentation, prototyping, and lightweight tasks.

### Basic tier

Requires the **Basic** plan (\$10/mo) or higher.

| Model            | Provider  | Context | Notes                   |
| ---------------- | --------- | ------- | ----------------------- |
| ShuttleAI Auto   | ShuttleAI | 400K    | Smart request router    |
| GPT-5.2          | OpenAI    | 400K    | Latest GPT-5 series     |
| Claude Haiku 4.5 | Anthropic | 200K    | Fastest Anthropic model |

Basic-tier models offer strong performance for everyday use at an affordable price.

### Premium tier

Requires the **Premium** plan (\$25/mo) or higher.

| Model             | Provider  | Context | Notes                            |
| ----------------- | --------- | ------- | -------------------------------- |
| Claude Opus 4.6   | Anthropic | 200K    | Most intelligent Anthropic model |
| Claude Sonnet 4.6 | Anthropic | 200K    | Best speed/intelligence balance  |

Premium-tier models are frontier-level — the most capable models available.

<Info>
  The **Scale** plan (\$75/mo) includes access to **all** models plus early access to beta models and higher rate limits. See [Plans](/pricing/plans) for details.
</Info>

## How tiers affect your usage

* If your plan doesn't include a model's tier, the API returns a **403** error
* You can always use models from **lower** tiers (e.g., Premium plans can use Free and Basic models)
* Some models have a [request multiplier](/pricing/multipliers) that costs multiple requests per call

## Checking model requirements

Use the verbose models endpoint to see tier requirements for each model:

```bash theme={null}
curl https://api.shuttleai.com/v1/models/verbose \
  -H "Authorization: Bearer shuttle-xxx"
```

Each model includes a `plan` field indicating the minimum tier:

```json theme={null}
{
  "id": "claude-opus-4.6",
  "plan": "premium",
  "request_multiplier": 2.0,
  "permission": {
    "context_length": 200000,
    "max_output": 32000,
    "tool_calling": true
  }
}
```

<Card title="View all models" icon="grid-2" href="https://shuttleai.com/models">
  See the complete, up-to-date model list with tiers at shuttleai.com/models.
</Card>