Supported coding agents
Twill orchestrates existing CLI coding agents rather than building its own. This lets you use each model in a toolchain it’s designed to work well with.| CLI | Description | Status |
|---|---|---|
| Claude Code | Anthropic’s official CLI for Claude | Available |
| OpenCode | Open-source coding agent with multi-provider support | Available |
| Codex | OpenAI’s coding CLI | Available |
Supported LLMs
Claude Code
| Model | Description |
|---|---|
| Claude Opus | Most capable, best for complex tasks |
| Claude Sonnet | Balanced performance and speed |
| Claude Haiku | Fastest, best for simple tasks |
OpenCode
OpenCode supports multiple model providers:| Model | Provider |
|---|---|
| Claude 4.6 Sonnet | Anthropic |
| Claude 4.6 Opus | Anthropic |
| GPT 5.4 | OpenAI |
| GPT 5.3 Codex | OpenAI |
| Gemini 3 Pro | |
| Gemini 3 Flash |
Codex
| Model | Model ID | Description |
|---|---|---|
| GPT 5.4 | gpt-5.4 | OpenAI GPT 5.4 |
| GPT 5.3 Codex | gpt-5.3-codex | Coding-optimized GPT 5.3 |