Claude Code

Anthropic's terminal-level AI coding assistant and agentic coding tool

Claude Code is a terminal-level AI programming assistant launched by Anthropic in February 2025. This product is specially designed for developers, with its core positioning as an "agent coding tool" that can understand the entire code base, edit files, run commands, and integrate seamlessly with existing development tools. Different from traditional code completion tools, Claude Code works in the form of an "intelligent agent" and can independently complete multi-step programming tasks, covering the complete development process of code understanding, modification, debugging, test writing, and submission of PR.

In-depth Report

  • Claude Code is a terminal-level AI programming assistant launched by Anthropic in February 2025. This product is specially designed for developers, with its core positioning as an "agent coding tool" that can understand the entire code base, edit files, run commands, and integrate seamlessly with existing development tools. Different from traditional code completion tools, Claude Code works in the form of an "intelligent agent" and can independently complete multi-step programming tasks, covering the complete development process of code understanding, modification, debugging, test writing, and PR submission. Anthropic is an AI company founded in 2021, headquartered in California, USA. Its founders are from the OpenAI core team. Claude Code is one of Anthropic's major product lines launched in 2025, with the goal of becoming a "full-time programming partner" for professional developers. This product supports multiple usage channels such as terminals, IDEs (VS Code, JetBrains series), desktop applications, web pages, and iOS mobile terminals, and provides MCP (Model Context Protocol) extension protocols to support third-party tool integration.

  • Intelligent understanding of code base: Claude Code's core strength lies in its powerful code base understanding. Through intelligent semantic search, the tool can map and interpret the structure, module dependencies and business logic of the entire code base in seconds. Developers do not need to manually select context files, Claude Code can automatically understand the relationships between codes. This feature is especially useful for developers taking on unfamiliar projects or large code bases, and can significantly shorten the coding learning curve. Collaborative editing of multiple files: Different from traditional IDEs that only support single file editing, Claude Code can coordinate changes among multiple files and easily handle complex tasks such as batch refactoring, interface adjustment, and style unification. This feature builds on the powerful inference capabilities of the Claude 4 Series to understand logical changes across files and maintain code consistency. Terminal native experience: Claude Code runs in the form of a command line. Developers can directly complete code review, file modification, command execution and other operations in the terminal without switching to a web page or a separate IDE. This design concept pursues "seamless development experience" and allows coders to solve daily programming problems without leaving the work context. IDE deep integration: The product provides VS Code extensions and JetBrains plug-ins, which support visual difference viewing, code preview and other functions. For developers who are accustomed to graphical interfaces, they can use the core capabilities of Claude Code in the original IDE environment. Development workflow integration: Claude Code is deeply integrated with GitHub and GitLab, enabling a complete workflow from reading issues to submitting PRs. Developers can describe requirements through natural language and let AI automatically complete requirements analysis, code implementation, test writing and version submission. Security permission control: The product design includes an "explicit authorization" mechanism - Claude Code will not automatically modify files without the user's explicit permission. The CLAUDE.md file allows users to define project-level configuration and security rules.

  • Claude Code uses a tiered subscription model, priced by usage and service level: Pro plan: $17/month (paid annually) or $20/month (paid monthly), suitable for short-term programming tasks with small code bases. Max 5x plan: $100/month, suitable for developers who use larger code bases on a daily basis. Max 20x Plan: $200/month, top-tier access for premium users. Team Plan: $20/seat/month, 5-150 person team plan, includes self-management capabilities. Enterprise plan: Contact sales, the Enterprise plan includes advanced security, user management and data analysis features. API Plan: Pay-as-you-go, suitable for developers integrating Claude capabilities into their own products, with no seat or platform fees. It is worth noting that Anthropic has not yet opened direct services to mainland China. Domestic users need to use overseas transfer stations or mirror platforms, which increases the uncertainty of usage costs and network stability.

  • Positive review: Based on feedback from the Chinese developer community, Claude Code was recognized for: High code quality: The generated code has an elegant style and fewer bugs, making it especially suitable for professional developers who have higher requirements for code quality. Some developers said that Claude Code's performance on complex algorithm tasks is "way ahead". Strong reasoning ability: Excellent in handling complex business logic, code reconstruction, architecture decision-making and other difficult tasks. Many developers have reported that its autonomous capabilities in long-link tasks are significantly better than competing products. Security design: Files will not be modified without authorization. Users can clearly perceive every step of the AI's operations and intervene in a timely manner. Negative review: No graphical interface: The pure command line form has a high learning threshold for developers who are not familiar with terminals. Some users complained that "it is difficult to get started." Slow response speed: Due to its emphasis on reasoning ability, Claude Code takes a long time to think and is not as efficient as competing products on simple tasks that require quick completion. Network access restrictions: Mainland Chinese users cannot directly use Anthropic official services, and will face the risk of account ban once an abnormal IP is detected.

  • The AI ​​programming assistant market in 2025 will present a "multi-strong coexistence" pattern, with major competing products including Cursor (Anysphere), GitHub Copilot (Microsoft), Windsurf (Codeium), etc. The following is a comparison of industry mainstream: The core positioning of Claude Code is the king of code quality. The interaction method is terminal CLI. The proxy mode is the core function, but there is no inline completion function. The code quality is up to five stars, the response speed is slow, and the monthly fee is US$17-20. The advantage of Cursor lies in its complete graphical interface and VS Code ecosystem, which is suitable for developers who need visual operations. It adopts GUI (VS Code branch) interaction method, has Composer agent mode, medium response speed, and a monthly fee of 20 US dollars. GitHub Copilot attracts entry-level users with deep IDE integration and low price. It is an IDE plug-in form, limited proxy mode, best inline completion, three-star code quality, fastest response speed, and a monthly fee of 10 US dollars. Experienced developers usually use a combination of multiple tools: Claude Code for complex refactoring and deep reasoning tasks, Copilot for fast inline completion, and Cursor for visual code review.

  • Security Vulnerabilities: In February 2026, cybersecurity research firm Check Point Research disclosed multiple security vulnerabilities in Claude Code, including critical issues that allowed remote code execution and API credential theft. The vulnerability in question has reportedly been assigned 3 CVE numbers and allows an attacker to steal API keys with zero user interaction. The incident sparked widespread concerns among the developer community about the security of AI programming tools. CLAUDE.md configuration ignored: According to user feedback on GitHub, Claude Code sometimes systematically ignores explicitly configured security rules in the CLAUDE.md file, leading to accidental exposure of sensitive credentials. Anthropic has fixed it in subsequent versions, but such issues still affect developers' trust in the tool. Ability Boundaries: Although Claude Code performs well on complex reasoning, it is not as efficient as tools that focus on completion on simple code completion tasks. In addition, the learning curve is steep for developers who are not familiar with the command line. Network access restrictions: Anthropic has not yet opened its services to mainland China, and domestic users need to rely on third-party transfer or mirror platforms, which brings additional costs and network stability risks. Some developers reported that their accounts were blocked when using mirroring services, and their funds were returned to the original route.

  • Based on product features and user feedback, Claude Code is more suitable for the following groups of people: Professional developers: Senior engineers who have high requirements for code quality and architecture design and need AI to process complex business logic. Algorithm Engineer: Professional developers who need to handle difficult reasoning tasks and complex code reconstruction. Developers who are familiar with the command line: technical users who are accustomed to working in the terminal and pursue a seamless development process. Large codebase maintainers: Teams that need to quickly understand, modify, and maintain complex projects. It is recommended to consider alternatives for the following groups of people: Beginners: Prioritize tools that are easier to use such as GitHub Copilot. Developers who rely on graphical interfaces: GUI tools such as Cursor may be more suitable. Mainland Chinese users: You need to evaluate network conditions and costs before deciding whether to use it.

  • Claude Code is an important product in the field of AI programming assistants in 2025, representing the development direction of "agent-based AI programming". Its design is industry-leading in terms of code base understanding, multi-file collaboration, and security permission control, and its code quality has been widely recognized. However, the pure command-line interaction form, network access restrictions, and security vulnerabilities disclosed in 2026 also indicate the limitations and room for improvement of this product. For professional development teams, it is recommended to use Claude Code as the main tool for complex development tasks, and use it in combination with tools such as Cursor and Copilot to take advantage of each product in different scenarios.

User Reviews

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    安然871
    老实说踩过坑:长会话跑久了会自动压缩上下文,那之后明显变傻变慢,同一个任务手动贴给网页版 4.5 分钟搞定,它自己磨叽 18 分钟。社区的招数是别硬撑,直接开新会话。另外 MCP 那套很香但上下文税不低,后来开 Tool Search 把 51K 压到 8.5K 才舒服。整体还是目前最能打的终端 Agent,前提是你愿意花时间学它的套路(CLAUDE.md、子代理、hooks),当自动补全用必翻车。

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    SHall040
    Claude Code 真香,回不去 Cursor 了。

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    Mary.Nelson168
    用了两周直接上瘾,重构老模块特别省心,就是 Pro 套餐额度太少了,重度用半天就见底。

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    MarjorieYalçin
    MCP 是真香,接了数据库和内部 API,但四个 server 一开没打字就吃 6 万 token,肉疼。

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    Matthew_Powell75
    终端党狂喜,就是新手劝退。

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    秋叶476
    Claude Code 的子代理多开真的像在打星际,一个人当三个用。上周把登录模块从 session 改成 JWT,它自己读代码、写代码、跑测试、提交,我只管 review diff,效率高到离谱。

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    HSimmons_2021
    「Claude-pilled」这个词太准了,身边好几个同事都上瘾。Vercel 的 CTO 休假一周用这玩意干完了一年的活,听着离谱但确实。200K 上下文对大仓是真救命,丢整个代码库进去它都能理顺依赖。

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    Natalie_Hughes_2021
    说个真实成本:我重度用 Max 档(100 刀/月),平均每天大概 4 刀多,比按 API 直接刷省太多。之前有人算过 8 个月刷了 100 亿 token 相当于 1.5 万刀的 API 费,而 Max 只花 800 刀,省了九成。前提是真重度用,轻度用户 Pro 就够了。但 Pro 那个额度,认真干两三个小时就见底,基本算体验版。

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    Steven_Rodriguez_Pro
    五月份那个版本气死我,CLAUDE.md 里写的规则根本不遵守,烧了一堆 credits 才出活,最后还得手动加 hooks 强制它走流程。

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    Melissa_JohnsonX
    四月底 Anthropic 那个官方道歉帖子看了吧,承认是三个 bug 叠加导致质量回退。说实话 Reddit 都快成他们的 bug tracker 了。不过认错态度还行,修完之后 4.7 的 verify 步骤确实稳,自己跑测试发现失败会自己改再跑。

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    AGomezII0
    对比了下 Codex 和 Claude Code,结论很现实:Codex 你永远用不完,20 刀档随便造不卡;Claude Code 质量高但 Pro 档十二个重 prompt 就废了。现在我的工作流是 Codex 负责闷头实现、自动开 PR,Claude Code 负责交互式改 commit、做精准小修。两个混着用效率最高,单开一个都有短板。

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    heavylion608
    Claude Code 代码质量真的没话说,复杂重构任务上比 Cursor 强太多,就是这个 rate limit 太坑了,200美元套餐都不够用。

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    Keith.Perry_Pro
    用了两周,代码审查时间直接砍半,这钱花得值。

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    Robert.Murphy_7
    比 Copilot 强十条街,价格也贵十条街,预算有限的建议绕道。

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    6j323xez
    Claude Code + MCP 自动化工作流 yyds,搭配使用效率翻倍。

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    WAjac
    复杂任务首选 Claude Code,简单补全还是 Cursor 快,国内用不了官方服务伤不起。

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    RaymondHicks_2020747
    200K context window 不是吹的,理解和推理能力确实强,但就是贵。

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    Carter326
    Claude Code 太贵了,学生党伤不起,Copilot 免费版香爆了。

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    剑客283
    团队里几个算法任务都交给 Claude Code 了,效率提升明显,就是月底额度总是不够用。

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    mcehh2024
    Codex 的 rate limit 比 Claude Code 慷慨太多了,日常使用首选 Codex。

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    贾兰
    Claude Code 改变了我的开发方式,根本回不去了。

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    EMoore007
    Claude Code vs Codex:Claude 适合架构和审查,Codex 适合日常撸代码。

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    450z8
    Claude Code 太贵了,100 美元一个月普通开发者根本用不起。

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    汪凤华
    Claude Code 配合 Gemini 做 Code Review 效果拔群,两个模型一起用效率拉满。

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    fifjen3
    Claude Code 太慢了,急性子劝退,思考时间太长。

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    9S23TOI
    Claude Code 配合 Cursor 使用,复杂任务 CC,日常补全用 Cursor,完美组合!

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    lazyfish207
    Claude Code 理解项目结构的能力比其他工具强太多。

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    Kimberly_RiveraII9
    Claude Code 确实强,但 $20 套餐几分钟就用完了,性价比不高。

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    9jvhur92
    Claude Code 重新定义了 AI 编程,其他工具都是弟弟。

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    gvta2v7o
    Claude Code 使用门槛太高,命令行新手劝退,建议先玩Cursor。