Sidian

Sidian is an advanced, AI-powered code editor built to enhance the productivity of modern software engineers. Its core is a powerful context engine that analyzes and understands your entire codebase—including files, symbols, and their relationships—in seconds. This deep understanding allows the AI to provide highly accurate and relevant assistance. Sidian is designed for flexibility, allowing developers to connect with their preferred AI providers such as OpenAI, Anthropic, and Google, or even run large language models locally. With features focused on enterprise-grade needs and developer-centric workflows, it aims to be an indispensable coding companion.

How to use Sidian

To get started with Sidian, download the application from the official website. Once installed, you can connect it to your preferred AI model provider (e.g., OpenAI, Google) or configure it to use a local LLM. Sidian will then index your project's codebase to build its contextual understanding. From there, you can leverage its features directly within the editor: use inline editing to refactor code with simple text prompts, get context-aware suggestions via tab completion, manage your tasks with the integrated todo list, and let the AI automatically detect and highlight linting issues in the code it generates.

Core Features of Sidian

• Unified Context Engine: Rapidly indexes files, symbols, and relationships to provide the AI with a deep understanding of the entire codebase.
• BYOM (Bring Your Own Model): Integrates with popular AI providers like OpenAI, Anthropic, and Google, and supports running local LLMs for full control and privacy.
• Memories & Rules: Remembers key information about your codebase and workflow preferences (e.g., preferred language, commit conventions) to personalize its assistance.
• Inline Editing: Select a block of code, type a request, and Sidian will preview and apply the AI-generated changes instantly.
• AI-Aware Tab Completion: Offers intelligent code completion that understands data types, coding patterns, and project-specific context.
• Lint Detection: Automatically identifies and flags potential issues or errors in the code generated by the AI.
• MCP Support: Allows for one-click setup to connect various tools and services, enhancing your development workflow.
• Zero Code Retention Policy: Ensures user privacy by not storing or retaining any of the user's code.

Use Cases for Sidian

Sidian is ideal for developers looking to accelerate their workflow. It excels at quickly onboarding developers to new or complex codebases by providing instant context. It can be used for rapid prototyping, refactoring legacy code, debugging complex issues by suggesting fixes, and writing cleaner, more consistent code by following predefined rules. It also serves as a powerful learning tool for junior developers, offering suggestions that align with best practices.

Advantages of Sidian

The primary advantage of Sidian is its deep, contextual understanding of code, which leads to more precise and useful AI suggestions compared to other tools. Its model-agnostic approach gives developers the freedom to choose the best AI for their needs, including private, local models. The 'Memories & Rules' feature provides a highly personalized experience that adapts to individual and team workflows. Furthermore, its focus on privacy with a zero code retention policy makes it a trustworthy choice for professional and enterprise environments.

Pricing and Plans

Sidian is currently in a free beta period, offering a Pro Trial for 14 days that includes all premium features. Official pricing for the Pro and Enterprise plans is listed as 'Coming soon'. The planned tiers are:

• Pro Trial (Free): Includes the Context Engine, MCP Support, Local LLM Support, and a zero code retention policy.
• Pro (Coming Soon): Designed for professional developers and teams, adding Priority Support.
• Enterprise (Coming Soon): Offers on-premise deployment, 24/7 dedicated support, custom integrations, and SLA guarantees.