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

# Overview

Our multi-tiered approach combines the strengths of each AI system:

<CardGroup>
  <Card href="/config/ai-models/openai">
    <div className="flex gap-3 items-center">
      <img className="h-6 w-6 primary-light" src="https://cdn.simpleicons.org/openai/white?viewbox=auto&size=40" />
    </div>

    <div>
      <h2 className="font-semibold text-base text-gray-800 dark:text-white mt-4">
        Open AI
      </h2>

      <div className="mt-1 font-normal text-sm leading-6 text-gray-600 dark:text-gray-400">
        <p>for filename + metadata generation</p>
      </div>
    </div>
  </Card>

  <Card href="/config/ai-models/llama">
    <div className="flex gap-3 items-center">
      <img className="h-6 w-6 primary-light" src="https://cdn.simpleicons.org/meta/white?viewbox=auto&size=30" />

      <span style={{ fontSize: '1.3rem', margin: 0 }}>+</span>

      <img className="h-6 w-6 primary-light" src="https://cdn.simpleicons.org/ollama/white?viewbox=auto&size=40" />
    </div>

    <div>
      <h2 className="font-semibold text-base text-gray-800 dark:text-white mt-4">
        Meta Llama + Ollama
      </h2>

      <div className="mt-1 font-normal text-sm leading-6 text-gray-600 dark:text-gray-400">
        <p>for holistic understanding of complex layouts</p>
      </div>
    </div>
  </Card>

  <Card href="/config/ai-models/tesseract" icon="" title="Tesseract">
    open-source OCR for text extraction
  </Card>
</CardGroup>