> ## Documentation index
> Fetch the complete documentation index at: https://arize.com/llms.txt
> Ask it with GET https://arize.com/ask?q=<keywords or question>. Short keywords rank best.
> Use these to discover all available pages before exploring further.

# MistralAI Tracing

> Instrument LLM calls made using MistralAI's SDK via the MistralAIInstrumentor

MistralAI is a leading provider for state-of-the-art LLMs. The MistralAI SDK can be instrumented using the [`openinference-instrumentation-mistralai`](https://github.com/Arize-ai/openinference/tree/main/python/instrumentation/openinference-instrumentation-mistralai) package.

## Install

```bash
pip install openinference-instrumentation-mistralai mistralai
```

## Setup

Set the `MISTRAL_API_KEY` environment variable to authenticate calls made using the SDK.

```javascript
export MISTRAL_API_KEY=[your_key_here]
```

Connect your application to Phoenix with the `register` function:

<CodeBlock language="python">
{`from phoenix.otel import register

# configure the Phoenix tracer
tracer_provider = register(
  project_name="$my-llm-app", # Default is 'default'
  auto_instrument=True # Auto-instrument your app based on installed OI dependencies
)`}
</CodeBlock>

## Run Mistral

```python
import os

from mistralai import Mistral
from mistralai.models import UserMessage

api_key = os.environ["MISTRAL_API_KEY"]
model = "mistral-tiny"

client = Mistral(api_key=api_key)

chat_response = client.chat.complete(
    model=model,
    messages=[UserMessage(content="What is the best French cheese?")],
)
print(chat_response.choices[0].message.content)
```

## Observe

Now that you have tracing setup, all invocations of Mistral (completions, chat completions, embeddings) will be streamed to your running Phoenix for observability and evaluation.

## Resources

* [Example notebook](https://github.com/Arize-ai/openinference/blob/main/python/instrumentation/openinference-instrumentation-mistralai/examples/chat_completions.py)

* [OpenInference package](https://github.com/Arize-ai/openinference/blob/main/python/instrumentation/openinference-instrumentation-mistralai)

* [Working examples](https://github.com/Arize-ai/openinference/blob/main/python/instrumentation/openinference-instrumentation-mistralai/examples)