> ## Documentation Index
> Fetch the complete documentation index at: https://dataleap-469bb19d-docs-from-request-2026-08-21-templates.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Chapter 3: Scale your craft

> Advanced levers: architecture, reuse, and cost control for bigger workflows.

Once your first agents run reliably, three levers take you further: better **architecture** (splitting work), better **reuse** (shared knowledge), and better **cost control** (the right model and calling strategy for each job).

<CardGroup cols={2}>
  <Card title="Sub-agents" icon="sitemap" href="/scale/sub-agents-and-intelligence-levels">
    A manager agent orchestrating helpers — for batch work, context isolation, and distinct phases.
  </Card>

  <Card title="Skills" icon="wand-magic-sparkles" href="/scale/skills">
    Reusable instruction modules any agent can pick up — the right way to share behavior.
  </Card>

  <Card title="Model tiers" icon="gauge-high" href="/scale/sub-agents-and-intelligence-levels#model-tiers">
    Expert to build, Pro to run — raise a preset when it struggles, dial down once proven.
  </Card>

  <Card title="Programmatic tool calling" icon="code" href="/scale/programmatic-tool-calling">
    Deterministic tool sequences that cut costs 30–80% on repetitive workflows.
  </Card>
</CardGroup>

<Card title="Prefer to watch?" icon="clapperboard" href="/video-series/section-3" horizontal>
  Section 3 of the video series covers these topics in short videos.
</Card>