Nebius AI Studio brief documentation added

guides/nebius.md

@@ -0,0 +1,44 @@
+# Nebius AI Studio
+
+To use Nebius AI Studio with `aisuite`, you need an AI Studio account. Go to [AI Studio](https://studio.nebius.ai/) and press "Log in to AI Studio" in the right top corner. After logging in, go to the [API Keys](https://studio.nebius.ai/settings/api-keys) section and generate a new key. Once you have a key, add it to your environment as follows:
+
+```shell
+export NEBIUS_API_KEY="your-nebius-api-key"
+```
+
+## Create a Chat Completion
+
+Install the `openai` Python client:
+
+Example with pip:
+```shell
+pip install openai
+```
+
+Example with poetry:
+```shell
+poetry add openai
+```
+
+In your code:
+```python
+import aisuite as ai
+client = ai.Client()
+
+provider = "nebius"
+model_id = "meta-llama/Llama-3.3-70B-Instruct"
+
+messages = [
+    {"role": "system", "content": "You are a helpful assistant."},
+    {"role": "user", "content": "How many times has Jurgen Klopp won the Champions League?"},
+]
+
+response = client.chat.completions.create(
+    model=f"{provider}:{model_id}",
+    messages=messages,
+)
+
+print(response.choices[0].message.content)
+```
+
+Happy coding! If you’d like to contribute, please read our [Contributing Guide](CONTRIBUTING.md).