Quick Use
- Download Trae IDE from trae.ai (macOS or Windows)
- Sign in with email or Google
- Click the SOLO mode toggle in the chat panel; describe your project goal
Intro
Trae SOLO is ByteDance's autonomous coding mode shipped inside the free Trae IDE. You describe a project, SOLO breaks it into tasks, generates files, runs the tests, and iterates until done — closer to Devin than Cursor in spirit. Best for: solo developers prototyping side projects without subscribing to Claude or Cursor Pro. Works with: Trae IDE on macOS / Windows. Setup time: 5 minutes (download + sign in).
What's in Trae SOLO
| Component | Behavior |
|---|---|
| Task planner | Breaks the user's high-level goal into ordered tasks before any file is touched |
| Multi-file editor | Edits and creates files based on the plan, with rollback if a test fails |
| Self-test loop | Runs npm test / pytest / language-detected tests after each change |
| Approval gates | User reviews planned changes; SOLO waits for approval before destructive ops |
| Free tier | Backed by Claude Sonnet / GPT-4o; no per-token billing for users |
Example session
You: "Build a Pomodoro timer web app — React, Tailwind, dark mode toggle, sound on completion."
SOLO plan:
1. Initialize Vite + React + Tailwind project
2. Create Timer component with start/pause/reset
3. Add sound asset and Web Audio API trigger
4. Add dark mode toggle with system preference detection
5. Write Vitest specs for timer state transitions
[reviews plan, approves]
SOLO executes:
Step 1: Created package.json, tailwind.config.js, src/main.tsx
Step 2: Created src/components/Timer.tsx (87 lines)
Step 3: Added public/bell.mp3, src/hooks/useSound.ts
...
All 5 steps complete. 4/4 tests passing. Run with: npm run devWhy ByteDance ships this for free
Trae is ByteDance's bet on the AI-coding stack outside China — competing with Cursor and Windsurf for English-speaking developers. SOLO is the free hook. Pricing for premium models (longer context, faster inference) comes later.
FAQ
Q: Is Trae SOLO really free? A: Yes — Trae IDE and SOLO mode are free as of 2026. ByteDance subsidizes the Claude / GPT inference cost. No credit card needed for the free tier.
Q: Is my code private if I use Trae? A: Trae's privacy policy states code stays private and is not used for model training. Verify on trae.ai/privacy before using on sensitive codebases.
Q: How does SOLO compare to Cursor's Composer? A: Cursor Composer is interactive — you guide each multi-file edit. SOLO is autonomous — you give a goal, it iterates to completion. Closer to Devin / Cline / Roo Boomerang than to Cursor.
Source & Thanks
Built by ByteDance. Free closed-source IDE.
trae.ai — Free download for macOS, Windows