> ## Documentation Index > Fetch the complete documentation index at: https://docs.trymaitai.com/llms.txt > Use this file to discover all available pages before exploring further. # Build > Improve the model and orchestrate real work: fine-tuned models, agents, and workflows. **Build** is the higher-investment pillar: once you can [observe](/observe/overview) your traffic and [test](/test/overview) its quality, this is where you improve the underlying model and compose it into real applications: fine-tunes, agents, and multi-step workflows. Come here when you want to answer: *"How do I make the model better at my task, and how do I wire it into something that takes action?"* In the Portal, everything in **Build** lives under the **Forge** section. ## What you can build Fine-tune a model end-to-end: datasets, compositions, runs, validation, then deployment. Tool-using runtimes that plan, call capabilities, and synthesize results. Multi-step AI pipelines you invoke with a single API call. ## End-to-end walkthroughs If you'd rather follow a complete recipe than read reference pages: Create, capabilities, orchestration, state, then test. Turn an OpenAPI spec into an agent with API-call actions and routing. Dataset, composition, run, validation, then deployment. ## Where to go next Build depends on data that [Observe](/observe/overview) produces and quality gates that [Test](/test/overview) enforces, most teams arrive here after both. To call what you build from code, see the [SDK Reference](/sdk/agent_call).