MarsCode 豆包MarsCode
ByteDance's AI coding IDE and assistant
Overview
MarsCode (豆包MarsCode) is ByteDance's free AI coding assistant — includes both an IDE extension for VS Code/JetBrains and a standalone browser IDE for instant prototyping. Powered by ByteDance's Doubao coding models. Notable for being completely free for individual developers, including high-tier agent features.
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豆包 MarsCode 是字节跳动推出的免费 AI 编程助手，既提供 VS Code / JetBrains 插件，也提供网页版云 IDE 用于快速原型。底层由字节豆包代码模型驱动。最大亮点是个人开发者完全免费，并包含 Agent 等高阶能力。
Pricing
Pricing shown for reference only. These figures reflect RECATOOLS research as of 20 May 2026 and may be out of date or incomplete. This is not financial or purchasing advice — always confirm the current price on the provider’s official website before making any decision.
Use cases
What you can produce with MarsCode 豆包MarsCode
- Get inline code completions and whole-function suggestions in a VS Code-style editor powered by Doubao, DeepSeek and other frontier models.
- Scaffold a working app from a natural-language description using Builder/SOLO mode, which plans, writes and wires up files autonomously.
- Chat with an assistant that sees your whole repository to explain unfamiliar code, generate unit tests or draft bug fixes.
- Switch between multiple AI models mid-session to compare answers or route cheap tasks to cheaper models.
- Keep using JetBrains or stock VS Code by installing the Trae plugin (the former MarsCode assistant) instead of the full IDE.
- Prototype in the browser-based cloud IDE without installing anything locally.
- Start on the free tier's monthly allowance of completions and premium requests before deciding whether a paid plan is worth it.
ASEAN Perspective
MarsCode 豆包MarsCode in Southeast Asia
国际版（MarsCode.com）面向全球开发者免费开放，是字节 AI 海外战略的重要触点。
MarsCode (豆包MarsCode) is ByteDance's AI coding assistant, offering code completion, an AI chat helper, and a browser-based cloud IDE, often at no cost. For developers in the Chinese ecosystem it is a competent, well-integrated Copilot alternative with solid Chinese-language support.
The key limitation for ASEAN and global users is reach: it is primarily oriented toward the China market, with the interface and docs largely in Chinese and uncertain availability, latency, and data-residency outside the region. It can be worth trying for the price, but English-first teams will generally get smoother results from GitHub Copilot, Cursor, or Codeium.
What people say
MarsCode no longer exists under that name: ByteDance folded it into Trae, the standalone AI IDE it launched in January 2025 as a VS Code fork. The old MarsCode programming assistant became the Trae plugin in April 2025, and marscode.com now redirects to trae.ai. The other founding-era claim — completely free — has also lapsed. Trae introduced paid subscriptions in 2025 and by 2026 runs a five-tier lineup (Free, Lite, Pro, Pro+, Ultra) on a token-based usage model, though the free tier remains generous by Copilot-era standards, with thousands of autocompletions and a monthly allowance of premium-model requests.
Users who like Trae praise exactly what made MarsCode popular: aggressive pricing (Pro at roughly $10/month with access to frontier models including Claude), a polished Builder/SOLO agent mode that can scaffold whole projects, and multi-model switching that in the China edition includes Doubao and DeepSeek models. For budget-conscious developers it undercuts Cursor significantly.
The dominant complaint is trust. In July 2025 security researchers found the IDE transmitting extensive telemetry — file paths, editor activity, hardware fingerprints — even after users disabled tracking, generating coverage in The Register, TechRadar and Cybernews; community handling of the criticism (Discord mutes for mentioning tracking) made it worse. ByteDance said the toggle only governed VS Code-framework telemetry, but the episode cemented a ByteDance-data-practices concern that dominates Reddit and Hacker News threads about the product. Free-tier users also report queuing behind paid users at peak times.
Trae fits hobbyists, students and cost-sensitive developers who want a capable agentic IDE cheaply and are comfortable with ByteDance's data posture. Developers working on proprietary or regulated codebases — or anyone whose employer restricts Chinese-owned tooling — generally look elsewhere.
Summary of public user & expert reviews, compiled by RECATOOLS.
About this listing
This entry was compiled from publicly available data including MarsCode 豆包MarsCode's official website, press releases, documentation, and reputable third-party publications. RECATOOLS is not affiliated with MarsCode 豆包MarsCode unless explicitly stated.
Third-party AI tools update their pricing, features, availability, and policies frequently. Information here may be outdated by the time you read this — we make reasonable efforts to keep listings current, but cannot guarantee absolute accuracy.
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