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

# Agent Configuration

> Choose which AI agents handle your tasks

## How It Works

Twill lets you choose from multiple coding agents to handle your tasks:

* **Claude Code** — Anthropic's official CLI with Claude Opus, Sonnet, and Haiku models.
* **OpenCode** — Open-source agent supporting Claude, GPT, and Gemini models.
* **Codex** — OpenAI's coding CLI with GPT 5.3 Codex.

## Per-Task Agent Selection

When creating a task, you can select which agents to use:

* **Choose your agent**: Pick from Claude Code, OpenCode, or Codex
* **Run in parallel**: Select multiple agents to compare their outputs
* **Run multiple times**: Run the same agent n times to increase success rate

## Workspace Settings

Configure defaults from **Settings → Agent**:

| Setting           | What It Does                                      |
| ----------------- | ------------------------------------------------- |
| **Default Agent** | Agent selected by default when creating new tasks |