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

# SDK OpenAI

> Utilisez les SDK officiels OpenAI avec Phaseo.

Utilisez ce guide si votre application appelle déjà OpenAI depuis TypeScript, JavaScript ou Python. Modifiez uniquement la clé API, l’URL de base et l’identifiant du modèle.

## TypeScript

```bash theme={null}
npm install openai
```

```ts theme={null}
import OpenAI from "openai";

const client = new OpenAI({
	apiKey: process.env.PHASEO_API_KEY,
	baseURL: "https://api.phaseo.app/v1",
});

const response = await client.responses.create({
	model: "openai/gpt-5-nano",
	input: "Write one sentence about reliable model routing.",
});

console.log(response.output_text);
```

## Python

```bash theme={null}
pip install openai
```

```python theme={null}
import os
from openai import OpenAI

client = OpenAI(
    api_key=os.environ["PHASEO_API_KEY"],
    base_url="https://api.phaseo.app/v1",
)

response = client.responses.create(
    model="openai/gpt-5-nano",
    input="Write one sentence about reliable model routing.",
)

print(response.output_text)
```

## Chat Completions

Les bibliothèques plus anciennes peuvent encore utiliser Chat Completions :

```ts theme={null}
const completion = await client.chat.completions.create({
	model: "openai/gpt-5-nano",
	messages: [{ role: "user", content: "Reply with only: ok" }],
});
```

## Remarques

* Utilisez les identifiants de modèle Phaseo, y compris les préfixes de fournisseur tels que `openai/`, `anthropic/` ou `google/`.
* Les outils serveur utilisent des noms Phaseo, par exemple `phaseo:web_search`.
* Pour les clients natifs Anthropic, consultez le guide du [SDK Anthropic](./anthropic-sdk.mdx).

## Pages associées

* [API Responses](../../api-reference/endpoint/responses.mdx)
* [Chat Completions](../../api-reference/endpoint/chat-completions.mdx)
* [Outils serveur](../server-tools/index.mdx)


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