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

# Vercel

> Using Vercel AI Gateway for unified LLM access with Upsonic

## Overview

Vercel AI Gateway provides an OpenAI-compatible API at `https://ai-gateway.vercel.sh/v1`, routing to multiple backends.

**Model Class:** `VercelModel`

## Authentication

```bash theme={null}
export VERCEL_AI_GATEWAY_API_KEY="..."   # Or VERCEL_OIDC_TOKEN
```

## Examples

```python theme={null}
from upsonic import Agent, Task
from upsonic.models.vercel import VercelModel

model = VercelModel(model_name="anthropic/claude-opus-4.6")
agent = Agent(model=model)

task = Task("Hello, how are you?")
result = agent.do(task)
print(result)
```

## Model Settings

You can set model parameters in two ways: on the model or on the Agent.

**On the model:**

```python theme={null}
from upsonic import Agent, Task
from upsonic.models.vercel import VercelModel, VercelModelSettings

model = VercelModel(
    model_name="anthropic/claude-opus-4.6",
    settings=VercelModelSettings(max_tokens=1024, temperature=0.7)
)
agent = Agent(model=model)
```

**On the Agent:**

```python theme={null}
from upsonic import Agent, Task
from upsonic.models.vercel import VercelModelSettings

agent = Agent(
    model="vercel/anthropic/claude-opus-4.6",
    settings=VercelModelSettings(max_tokens=1024, temperature=0.7)
)
```

## Parameters

| Parameter             | Type        | Description                    | Default       | Source |
| --------------------- | ----------- | ------------------------------ | ------------- | ------ |
| `max_tokens`          | `int`       | Maximum tokens to generate     | Model default | Base   |
| `temperature`         | `float`     | Sampling temperature (0.0-2.0) | 1.0           | Base   |
| `top_p`               | `float`     | Nucleus sampling               | 1.0           | Base   |
| `seed`                | `int`       | Random seed                    | None          | Base   |
| `stop_sequences`      | `list[str]` | Stop sequences                 | None          | Base   |
| `presence_penalty`    | `float`     | Token presence penalty         | 0.0           | Base   |
| `frequency_penalty`   | `float`     | Token frequency penalty        | 0.0           | Base   |
| `parallel_tool_calls` | `bool`      | Allow parallel tools           | True          | Base   |
| `timeout`             | `float`     | Request timeout (seconds)      | 600           | Base   |