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

# Chat Completions

> Generate text with language models in minutes

## Overview

Generate text responses from language models using the OpenAI-compatible chat completions API. Supports streaming, vision, tool calling, and structured output.

## Minimal Example

<CodeGroup>
  ```python Python theme={null}
  from openai import OpenAI

  client = OpenAI(
      base_url="https://hub.oxen.ai/api/ai",
      api_key="YOUR_API_KEY",
  )

  response = client.chat.completions.create(
      model="claude-sonnet-4-6",
      messages=[{"role": "user", "content": "What is Oxen.ai?"}],
      max_tokens=200,
  )

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

  ```bash cURL theme={null}
  curl -X POST https://hub.oxen.ai/api/ai/chat/completions \
    -H "Authorization: Bearer YOUR_API_KEY" \
    -H "Content-Type: application/json" \
    -d '{
      "model": "claude-sonnet-4-6",
      "messages": [{"role": "user", "content": "What is Oxen.ai?"}],
      "max_tokens": 200
    }'
  ```
</CodeGroup>

## With Streaming

<CodeGroup>
  ```python Python theme={null}
  from openai import OpenAI

  client = OpenAI(
      base_url="https://hub.oxen.ai/api/ai",
      api_key="YOUR_API_KEY",
  )

  stream = client.chat.completions.create(
      model="gemini-3-1-flash-lite-preview",
      messages=[{"role": "user", "content": "Write a haiku about data"}],
      stream=True,
  )

  for chunk in stream:
      content = chunk.choices[0].delta.content
      if content:
          print(content, end="", flush=True)
  print()
  ```

  ```bash cURL theme={null}
  curl -X POST https://hub.oxen.ai/api/ai/chat/completions \
    -H "Authorization: Bearer YOUR_API_KEY" \
    -H "Content-Type: application/json" \
    -d '{
      "model": "gemini-3-1-flash-lite-preview",
      "messages": [{"role": "user", "content": "Write a haiku about data"}],
      "stream": true
    }'
  ```
</CodeGroup>

## What's Next

* [Chat Completions Reference](/inference-api/reference/chat_completions) for the full parameter list
* [Image Generation Quick Start](/inference-api/quickstart/image-generation) to generate images
* [Video Generation Quick Start](/inference-api/quickstart/video-generation) to generate videos