> ## 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.

# Cohere

> Using Cohere models with Upsonic

## Overview

Cohere provides enterprise-grade language models including Command R+ with strong multilingual capabilities and retrieval-augmented generation.

**Model Class:** `CohereModel`

## Authentication

```bash theme={null}
export CO_API_KEY="..."
```

## Examples

```python theme={null}
from upsonic import Agent, Task
from upsonic.models.cohere import CohereModel

model = CohereModel(model_name="command-r-plus")
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.cohere import CohereModel, CohereModelSettings

model = CohereModel(
    model_name="command-r-plus",
    settings=CohereModelSettings(max_tokens=1024, temperature=0.7)
)
agent = Agent(model=model)
```

**On the Agent:**

```python theme={null}
from upsonic import Agent, Task
from upsonic.models.cohere import CohereModelSettings

agent = Agent(
    model="cohere/command-r-plus",
    settings=CohereModelSettings(max_tokens=1024)
)
```

## Parameters

| Parameter           | Type        | Description                    | Default | Source |
| ------------------- | ----------- | ------------------------------ | ------- | ------ |
| `max_tokens`        | `int`       | Maximum tokens to generate     | 4096    | Base   |
| `temperature`       | `float`     | Sampling temperature (0.0-1.0) | 0.3     | Base   |
| `top_p`             | `float`     | Nucleus sampling               | 0.75    | 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   |