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

# Langfuse

> Guia passo a passo para configurar o Langfuse com a Novita AI para desenvolver, monitorar, avaliar e depurar aplicações de IA.

Com o Langfuse, sua equipe pode depurar, analisar e iterar colaborativamente em suas aplicações de LLM criadas com a Novita AI. Seus recursos totalmente integrados simplificam o fluxo de trabalho de desenvolvimento, aumentando a eficiência e acelerando o progresso.

Este guia mostra como integrar a Novita AI ao Langfuse. Os endpoints de API da Novita AI para chat, linguagem e código são totalmente compatíveis com a API da OpenAI. Isso nos permite usar a substituição drop-in OpenAI do Langfuse para rastrear todas as partes da sua aplicação.

# Pré-requisitos

Antes de começar, certifique-se de ter o seguinte:

* Chave de API LLM da Novita AI:
  * Visite o site da Novita AI para criar uma conta.
  * Faça login e acesse a página de Gerenciamento de Chaves para gerar sua Chave de API, essencial para integrar os modelos da Novita AI ao Langfuse.

    <Frame>
      <img src="https://mintcdn.com/novitaai/AUzGFUdz_qhrXjaJ/images/third-party/langfuse-1.png?fit=max&auto=format&n=AUzGFUdz_qhrXjaJ&q=85&s=d7d5a07696198c38f4d3872678a80e85" alt="" width="3486" height="1004" data-path="images/third-party/langfuse-1.png" />
    </Frame>
* Conta Langfuse:
  * Cadastre-se para uma conta Langfuse no site oficial do [Langfuse](https://langfuse.com) para começar a criar aplicações de IA poderosas.

# Etapas de integração

## Etapa 1: Instale as dependências

Certifique-se de ter instalado todos os pacotes Python necessários:

```shell theme={"system"}
pip install openai langfuse
```

## Etapa 2: Configure as variáveis de ambiente

```python theme={"system"}
import os

# Get keys for your project from the project settings page
# https://cloud.langfuse.com

os.environ["LANGFUSE_PUBLIC_KEY"] = "pk-..." # DOCS EXAMPLE KEYS
os.environ["LANGFUSE_SECRET_KEY"] = "sk-..." # DOCS EXAMPLE KEYS
os.environ["LANGFUSE_HOST"] = "https://cloud.langfuse.com" # 🇪🇺 EU region
# os.environ["LANGFUSE_HOST"] = "https://us.cloud.langfuse.com" # 🇺🇸 US region


# Get your Novita AI API key from the project settings page
os.environ["NOVITA_API_KEY"] = "..."
```

## Etapa 3: Substituição drop-in OpenAI do Langfuse

Nesta etapa, usamos a [substituição drop-in OpenAI](https://langfuse.com/docs/integrations/openai/python/get-started) nativa importando `from langfuse.openai import openai`.

Para começar a usar a Novita AI com as bibliotecas de cliente da OpenAI, passe sua chave de API da Novita AI para a opção `api_key` e altere o `base_url` para [`https://api.novita.ai/openai:`](https://api.novita.ai/openai)

```python theme={"system"}
# instead of import openai:
from langfuse.openai import openai

client = openai.OpenAI(
  api_key=os.environ.get("NOVITA_API_KEY"),
  base_url="https://api.novita.ai/openai",
)
```

**Observação:** A substituição drop-in OpenAI é totalmente compatível com o [Langfuse Python SDK](https://langfuse.com/docs/observability/sdk/overview) e a [instrumentação `@observe()`](https://langfuse.com/docs/observability/sdk/instrumentation) para rastrear todas as partes da sua aplicação.

## Etapa 4: Execute um exemplo

A célula de código a seguir mostra como usar o cliente OpenAI rastreado para chamar o modelo de chat da Novita AI. Todas as chamadas de API serão rastreadas perfeitamente pelo Langfuse.

```python theme={"system"}
client = openai.OpenAI(
  api_key=os.environ.get("NOVITA_API_KEY"),
  base_url="https://api.novita.ai/openai",
)

response = client.chat.completions.create(
  model="meta-llama/llama-3.1-70b-instruct",
  messages=[
    {"role": "system", "content": "Act like you are a helpful assistant."},
    {"role": "user", "content": "What are the famous attractions in San Francisco?"},
  ]
)

print(response.choices[0].message.content)

San Francisco, one of the most iconic cities in the world, is home to a plethora of famous attractions that cater to all interests and ages. Here are some of the most popular attractions in San Francisco:

1. **Golden Gate Bridge**: An engineering marvel and a symbol of San Francisco, the Golden Gate Bridge is a must-visit attraction. Take a walk or bike ride across the bridge for spectacular views of the city and the Bay.
2. **Alcatraz Island**: Explore the infamous former prison turned national park, which once housed notorious inmates like Al Capone. Take a ferry to the island and enjoy a guided tour of the prison and its surroundings.
3. **Fisherman's Wharf**: A bustling waterfront district, Fisherman's Wharf is famous for its seafood restaurants, street performers, and stunning views of the Bay Bridge and Alcatraz Island. Don't miss the sea lions at Pier 39!
4. **Chinatown**: San Francisco's Chinatown is one of the largest and oldest in the United States. Explore the colorful streets, try some authentic Chinese cuisine, and shop for unique souvenirs.
5. **Golden Gate Park**: A sprawling urban park that's home to several attractions, including the de Young Museum, the California Academy of Sciences, and the Japanese Tea Garden.
6. **Cable Cars**: A classic San Francisco experience, the cable cars offer a fun and historic way to explore the city. Take a ride on the Powell-Mason line to Fisherman's Wharf, or the Powell-Hyde line to Lombard Street.
7. **Lombard Street**: Known as the "crookedest street in the world," Lombard Street is a scenic and winding road that offers stunning views of the city.
8. **Union Square**: A vibrant public square in the heart of the city, Union Square is surrounded by shopping, dining, and entertainment options. Catch a show at the historic Curran Theatre or take a stroll through the square.
9. **The Painted Ladies**: A row of colorful Victorian houses on Alamo Square, the Painted Ladies are a iconic symbol of San Francisco's architecture. Take a photo in front of these stunning homes.
10. **The Exploratorium**: A museum of science, art, and human perception, the Exploratorium is a great place to learn and have fun. With interactive exhibits and stunning views of the Bay, it's a must-visit for families and science enthusiasts.
11. **Pier 39**: A popular shopping and dining destination, Pier 39 offers stunning views of the Bay Bridge, Alcatraz Island, and the sea lions that call the pier home.
12. **The de Young Museum**: A fine arts museum located in Golden Gate Park, the de Young Museum features a diverse collection of art and cultural exhibitions from around the world.

These are just a few of the many famous attractions in San Francisco. Whether you're interested in history, culture, science, or entertainment, San Francisco has something for everyone.
```

## Etapa 5: Veja os traces no Langfuse

Depois de executar a chamada de modelo de exemplo, você pode visualizar os traces no Langfuse. Esses traces fornecem informações detalhadas sobre suas chamadas de API da Novita AI, incluindo:

* Parâmetros da solicitação (model, messages, temperature, etc.)
* Conteúdo da resposta
* Estatísticas de uso de tokens
* Métricas de latência

[Link de trace de exemplo público no Langfuse](https://cloud.langfuse.com/project/cm7ua5l6e05wlad07qr6ce2wn/traces/039cc8b2-dba0-479f-9cd6-63672bc08c71?timestamp=2025-03-06T02%3A15%3A15.184Z).