---
title: ❓ FAQs
description: 'Collections of all the frequently asked questions'
---

#### How to use GPT-4 as the LLM model?

<CodeGroup>

```python main.py
import os
from embedchain import App

os.environ['OPENAI_API_KEY'] = 'xxx'

# load llm configuration from gpt4.yaml file
app = App.from_config(yaml_path="gpt4.yaml")
```

```yaml gpt4.yaml
llm:
  provider: openai
  config:
    model: 'gpt-4'
    temperature: 0.5
    max_tokens: 1000
    top_p: 1
    stream: false
```

</CodeGroup>

#### I don't have OpenAI credits. How can I use some open source model?

<CodeGroup>

```python main.py
import os
from embedchain import App

os.environ['OPENAI_API_KEY'] = 'xxx'

# load llm configuration from opensource.yaml file
app = App.from_config(yaml_path="opensource.yaml")
```

```yaml opensource.yaml
llm:
  provider: gpt4all
  config:
    model: 'orca-mini-3b.ggmlv3.q4_0.bin'
    temperature: 0.5
    max_tokens: 1000
    top_p: 1
    stream: false

embedder:
  provider: gpt4all
  config:
    model: 'all-MiniLM-L6-v2'
```
</CodeGroup>

#### How to contact support?

If docs aren't sufficient, please feel free to reach out to us using one of the following methods:

<Snippet file="get-help.mdx" />