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

# Runblob API — unified AI video and image API

> One REST API and one key to generate AI videos and images with Veo3, Kling, Nano Banana, and ChatGPT Image. Pay per request, no subscription.

## Transform Ideas into Videos

RunBlob makes video creation effortless. Simply describe what you want, and our AI generates professional-quality videos in minutes using multiple cutting-edge models.

<CardGroup cols={3}>
  <Card title="Quick Start" icon="rocket" href="/quickstart">
    Get your first video in 3 steps
  </Card>

  <Card title="Authentication" icon="shield" href="/api-reference/authentication">
    Secure API access guide
  </Card>

  <Card title="Examples" icon="lightbulb" href="/api-reference/veo3/examples">
    Ready-to-use code snippets
  </Card>
</CardGroup>

## AI Models

Choose the best model for your use case:

<CardGroup cols={2}>
  <Card title="Google Veo3" icon="video" href="/api-reference/veo3/generate">
    **Professional Video Generation**

    * High-quality text-to-video
    * Image-to-video animation
    * Frame-to-frame transitions
    * Reference-based generation
    * 1-10 minute generation time
  </Card>

  <Card title="Kling AI" icon="film" href="/api-reference/kling/generate">
    **Fast & Creative Generation**

    * Multiple model versions (1.6, 2.1, 2.5 Turbo, 2.6 NEW)
    * Kling 2.6: Audio-enabled Pro quality
    * Text-to-video & image-to-video
    * Negative prompts support
    * 2-5 minute generation time
  </Card>

  <Card title="Kling O1 Photo" icon="image" href="/api-reference/kling/photo-generate">
    **AI Image Generation**

    * High-quality image generation (1K/2K)
    * Reference-based with up to 5 input images
    * 8 aspect ratio options
    * Fast generation (1-2 minutes)
    * \$0.029 per image
  </Card>

  <Card title="Kling O3 Photo" icon="sparkles" href="/api-reference/kling/o3-photo-generate">
    **Advanced Image Generation (NEW)**

    * Ultra high-quality (1K/2K/4K)
    * Auto aspect ratio detection
    * Multi-shot generation support
    * Reference-based generation
    * Fast generation (1-3 minutes)
  </Card>

  <Card title="Kling O1 Video" icon="video" href="/api-reference/kling/video-generate">
    **Advanced Video Generation**

    * Text-to-video & image-to-video (up to 5 images)
    * Flexible durations (3-10 seconds)
    * 3 aspect ratios (16:9, 9:16, 1:1)
    * Audio support option
    * 1-10 minute generation time
  </Card>

  <Card title="Kling O3 Video" icon="wand-sparkles" href="/api-reference/kling/o3-video-generate">
    **Kling 3.0-omni Video (NEW)**

    * Standard (720p) & Pro (1080p) quality modes
    * 5/10/15 second durations
    * Text-to-video & image-to-video (up to 5 images)
    * 2-10 minute generation time
  </Card>

  <Card title="ChatGPT Image 2" icon="image" href="/api-reference/chatgpt-images/generate">
    **OpenAI Image Generation**

    * High-quality text-to-image
    * Reference-based with up to 4 images
    * Multiple image format support (URL, Base64)
    * Fast generation (1-3 minutes)
    * OpenAI-powered quality
  </Card>
</CardGroup>

## How It Works

<Steps>
  <Step title="Authenticate">
    Get your API key and start making requests
  </Step>

  <Step title="Generate">
    Send a text prompt to create your video
  </Step>

  <Step title="Download">
    Receive your professional video in minutes
  </Step>
</Steps>

## Key Features

<AccordionGroup>
  <Accordion icon="video" title="Multiple AI Models">
    Choose between Google Veo3, Kling AI, or Sora 2 based on your needs
  </Accordion>

  <Accordion icon="clock" title="Fast Generation">
    Videos ready in 2-15 minutes depending on model and settings
  </Accordion>

  <Accordion icon="webhook" title="Real-time Notifications">
    Get instant updates via webhooks when videos are ready
  </Accordion>

  <Accordion icon="shield" title="Enterprise Ready">
    Reliable API with comprehensive error handling and JWT authentication
  </Accordion>

  <Accordion icon="sliders" title="Advanced Control">
    Fine-tune results with negative prompts, CFG scale, seeds, orientations, and aspect ratios
  </Accordion>
</AccordionGroup>

<Note>
  **Ready to start?** Generate your first video with our [quickstart guide](/quickstart) or explore the API documentation for [Veo3](/api-reference/veo3/generate), [Kling AI Videos](/api-reference/kling/generate), [Kling O1 Videos](/api-reference/kling/video-generate), [Kling O3 Videos](/api-reference/kling/o3-video-generate), [Kling O1 Photos](/api-reference/kling/photo-generate), [Kling O3 Photos](/api-reference/kling/o3-photo-generate).
</Note>