Thalia
Claim this toolAgentic AI coding on macOS, with plan review and voice control
Free, no paid tierVisit WebsiteFreeVisit Website
Tracked since2026
The Bottom Line
- Price
- Free, no paid tier. Compare plans
Key facts
- Native macOS app for agentic coding with Meta's Muse Code CLI, designed for Apple Silicon.
- Structured six-step workflow: ask, plan, steer, review, rewind, and ship, all from a single chat interface.
- Privacy-first: no telemetry, keys stored in macOS Keychain, microphone recordings never saved.
Pros
- Privacy-respecting: no analytics, keys in Keychain, microphone recordings never saved.
- Designed specifically for Muse Code CLI with a polished, SwiftUI-native experience.
- Structured workflow from planning to PR means you review and approve at every stage, reducing unintended changes.
Cons
- Requires Apple Silicon and macOS, limiting platform compatibility.
- Dependent on Muse Code CLI access; not a standalone coding assistant.
- GitHub integration requires the GitHub CLI (gh) and a GitHub remote repo.
What is Thalia?
Thalia is a native macOS app that acts as a desktop client for Meta's Muse Code CLI, bringing agentic AI-assisted coding workflows to your local machine. It turns a conversation into a structured task flow: ask Muse what to build, review the generated plan before any file is touched, steer the work as it runs, approving or redirecting commands mid-turn, then review the exact diff snapshot, approve it, and push a pull request via GitHub CLI. The app is built with SwiftUI for Apple Silicon, runs offline audio transcription via Apple Speech, offers voice mode with hands-free input and spoken replies (including premium ElevenLabs voices), and stores API keys exclusively in the macOS Keychain. It sends no usage analytics or telemetry.
Key Features
- Project-based chat with per-task conversations, named and pinned chats, and persistent history.
- Composer toggles between Plan mode (Muse plans edits without touching files) and Build mode.
- Live steerable execution: approve each command before it runs, send new instructions mid-turn, or stop the turn.
- Snapshot-based review: approve only if current files exactly match the reviewed diff; run integrated checks.
- Checkpoints and rewind preview: capture Git checkpoints, preview exactly what a restore changes, and undo the rewind.
- Voice mode: press ⌃⇧Space to talk, hear replies read aloud, with Apple Speech or Meta's Muse Voice transcription.
- Agents screen shows helper agents Muse spawns, with per-agent message and stop controls; task board for coordination.
- MCP presets for GitHub, Linear, Cloudflare, Sentry, and GitLab; custom slash commands with $ARGUMENTS support.
Pricing
Free
Thalia is completely free to use with no hidden costs.
Reviews
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Thalia FAQ
How does Thalia help a developer turn a conversation into a structured coding task?
Thalia turns a conversation into a structured task flow by letting you ask Muse what to build, review the generated plan before any file is changed, steer the work as it runs by approving or redirecting commands mid-turn, and then review the exact diff snapshot before approving and pushing a pull request via GitHub CLI.
How does Thalia differ from Cursor in its approach to code generation?
Unlike Cursor, which is a standalone AI coding assistant, Thalia is a native macOS client specifically designed for Meta's Muse Code CLI, adding a structured workflow that requires you to review and approve plans and commands at every stage before any file is touched, reducing unintended changes.
What are the main platform requirements for using Thalia?
Thalia requires Apple Silicon and macOS, limiting its use to Mac computers with M-series or later chips. It also depends on Muse Code CLI access and GitHub CLI with a GitHub remote repository, so it is not a standalone coding assistant.
Which teams benefit most from using Thalia's structured workflow?
Development teams that value privacy and want to review every change before it is applied benefit most from Thalia's structured workflow, as it enforces plan review, command approval, and diff review before pushing a pull request.
How is Thalia priced for individual developers?
Thalia is free to use with no paid plan required, making it accessible to individual developers without any subscription cost.
Can Thalia process voice commands and provide spoken replies?
Yes, Thalia offers voice mode with hands-free input using offline audio transcription via Apple Speech, and it can provide spoken replies, including premium ElevenLabs voices.
How does Thalia handle API key security and user privacy?
Thalia stores API keys exclusively in the macOS Keychain and sends no usage analytics or telemetry, ensuring that your credentials and activity remain private on your machine.
Does Thalia integrate with GitHub for version control workflows?
Yes, Thalia integrates with GitHub through the GitHub CLI (gh) and requires a GitHub remote repository to push pull requests after reviewing and approving the diff snapshot.
Source: usethalia.com