Costrict
Costrict - strict AI coder for enterprises, quality first, including AI Agent, AI CodeReview, AI Completion.
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What is Costrict?
CoStrict is a free, open-source enterprise-grade AI coding assistant developed by Sangfor, designed for
Costrict pricing
Pricing model: Freemium
CoStrict is completely free and open-source under the Apache 2.0 license. The tool includes multiple free advanced models out of the box. Users can also customize with third-party API providers like Anthropic and OpenAI, configure any OpenAI-compatible API, or use local models via LM Studio/Ollama at no additional cost from CoStrict itself. Private deployment is available for enterprises without additional licensing fees.
Costrict pros
- Free and open-source under Apache 2.0 license
- Supports private deployment for code security
- Strict Mode enforces disciplined development processes
- Multi-model cross-validation reduces hallucinations
- Repository-wide code indexing with RAG
- 50%+ Token cost savings compared to other open-source tools
- Built-in AI Agent with autonomous decision-making
- Sub-second code completion speed
- Supports Python, Go, Java, JavaScript/TypeScript, C/C++
- VS Code and JetBrains IDE integration
- CLI tool available for terminal-based coding
- MCP service integration for external APIs and databases
- Image context support for multi-modal tasks
- Customizable modes for different development scenarios
- Multiple free advanced models included
Costrict cons
- Primarily focused on enterprise use cases
- Requires approval for file access and terminal operations
- Best suited for intranet development environments
- Image context depends on model support
- Learning curve for strict mode methodology
- May be overkill for individual hobby projects
- Some features require configuration setup
- Private deployment requires enterprise infrastructure
Frequently asked questions about Costrict
Is CoStrict free to use?
Yes, CoStrict is completely free and open-source under the Apache 2.0 license. It includes multiple free advanced models out of the box. You can also customize with third-party APIs or local models, but CoStrict itself has no licensing fees.
What IDEs does CoStrict support?
CoStrict is primarily available as a VS Code extension and supports JetBrains全系列IDE plugins. It also offers a CLI tool for terminal-based coding and has a web interface. The tool integrates with Zed, JetBrains, and Neovim via the ACP protocol.
What programming languages are supported?
CoStrict supports Python, Go, Java, JavaScript/TypeScript, C/C++ and other mainstream programming languages. The AI Agent can work across all these languages with context-aware suggestions and modifications.
How does private deployment work and why is it important?
Private deployment allows enterprises to run CoStrict within their own infrastructure with physical isolation and end-to-end encryption, ensuring code asset security. This is critical for intranet development environments with strict code security requirements where code cannot leave the company network.
What is the AI Agent capability?
The AI Agent can complete tasks end-to-end based on natural language requests. Capabilities include autonomous decision-making, full repository context retrieval, tool calling, error fixing, terminal operation, generating code, adding comments, optimizing code, explaining code, and troubleshooting compilation errors.
How does Code Review work in CoStrict?
Code Review indexes and parses entire code repositories to implement enterprise-level RAG-based coding knowledge. It uses a multi-expert model specialized checks plus multi-model cross-validation strategy, supporting checks on functions, selected code lines, individual files, and entire projects.
Can I use my own AI models or API keys?
Yes, CoStrict supports third-party API providers like Anthropic and OpenAI, allows configuration of any OpenAI-compatible API, and supports local models via LM Studio/Ollama. You can customize API and model settings in the configuration.
What is the difference between CoStrict CLI and the IDE plugin?
The IDE plugin (VS Code, JetBrains) provides a graphical interface with full features including AI Agent dialogue, code review, and code completion within your editor. The CLI tool is terminal-based, allowing you to collaborate with LLMs on coding tasks without leaving your command line, with TUI interactive interface, non-interactive mode for scripts, and web interface options.