Doubao MarsCode

Doubao MarsCode is an intelligent coding assistant built by ByteDance on the Doubao large model, offered as a plugin for VSCode and JetBrains IDEs and as a Cloud IDE. According to public sources in 2025, the project has been merged into the Trae product line and may continue under the Trae brand. It covers code completion, natural‑language‑to‑code generation, code explanation, unit test generation, automatic error fixing, and conversational Q&A. Users can switch between models such as Doubao‑1.5‑pro, DeepSeek‑R1, and DeepSeek‑V3. The Cloud IDE also includes an AI‑powered coding exercise feature with 500 real interview questions. Its biggest advantages are free access, low onboarding effort, and tight integration with common IDEs, noticeably cutting down repetitive coding and context switching. Several technical reviewers have praised its low latency and friendly support for Chinese developers. Because the project has merged into Trae, the standalone version may not receive major updates. It requires an internet connection and the generated code should always be reviewed.