Claude IDE Integration |
Claude Sonnet 4.5 in VS Code
Access Anthropic's Claude Sonnet 4.5 (October 2025) directly in your IDE. Get 200K token context, advanced reasoning, and superior code generation with the most capable AI assistant for complex development tasks.
200K context window • Superior code quality • Free to start
What is Claude Sonnet for Coding?
Claude Sonnet 4.5 is Anthropic's flagship AI model that excels at software development with a massive 200K token context window
Claude Sonnet 4.5 Overview
- 200K Context: Understand entire large codebases at once
- Superior Quality: 94% code accuracy benchmark
- Fast Speed: 0.3s average response time
- Security Focus: Built with safety in mind
Why Claude Excels at Coding
- Constitutional AI: Ethical and safe code generation
- Deep Reasoning: Complex architectural decisions
- Documentation: Natural language explanations
- Code Review: Security and best practices focus
Claude Model Family (October 2025)
Claude Sonnet 4.5
Balanced power and speed
Claude Opus 4.1
Maximum capability
Claude Haiku 4.5
Lightning fast
Claude Sonnet Capabilities in CodeGPT
Leverage Claude's massive context window and advanced reasoning for superior code generation
Auto-complete with 200K Context
Context-aware code completion with Claude's massive 200K token context window. The AI understands your entire codebase, not just the current file, delivering suggestions that fit perfectly with your architecture and patterns.
⚡ 200K tokens ≈ 150,000 words ≈ entire large codebase
Agent Mode: Planning, To-Do Lists & Multi-file Editing
Claude's advanced reasoning shines in agent mode. It can analyze complex requirements, design comprehensive implementation plans, and execute changes across dozens of files while maintaining architectural consistency.
Planning Mode
Design system architectures with Claude's deep reasoning
Complex Projects
Break down enterprise features into actionable steps
Large Refactoring
Safely refactor with full codebase understanding
Superior Code Quality
Generate maintainable, well-structured code that follows best practices and industry standards
Security-Focused
Claude prioritizes secure coding practices, identifying vulnerabilities and suggesting safe patterns
Documentation Excellence
Generate comprehensive documentation with natural language explanations of complex code
Architecture Design
Design scalable system architectures with Claude's deep understanding of patterns
Code Review
Get thorough code reviews focusing on security, performance, and maintainability
Legacy Modernization
Understand and refactor large legacy codebases with 200K context window
Claude vs Other AI Models (October 2025)
| Feature | Claude Sonnet 4.5 | GPT-5 Codex | Gemini 2.5 Pro |
|---|---|---|---|
| Context Window | 200K tokens | 200K tokens | 1M tokens |
| Code Quality | 94% | 93% | 89% |
| Avg Response Speed | 0.3s | 0.5s | 0.4s |
| Security Focus | Superior | High | High |
| Multilingual | Excellent | Excellent | Very Good |
Claude Sonnet 4.5 vs GPT-5
Both are top-tier models with similar capabilities. Claude edges ahead in security-focused development, documentation quality, and ethical AI practices. GPT-5 has broader community adoption. CodeGPT lets you switch between both based on the task.
Claude Sonnet 4.5 vs Opus 4.1
Sonnet 4.5 is the balanced choice—excellent capability at faster speeds and lower cost. Opus 4.1 is the most powerful model for the most complex tasks. For 95% of coding work, Sonnet 4.5 is the optimal choice.
Claude Haiku 4.5 for Speed
Need lightning-fast responses? Claude Haiku 4.5 provides quick completions and simple tasks at 10x the speed. Perfect for autocomplete and rapid iteration.
When to Choose Claude
- • Large codebase analysis
- • Security-critical apps
- • Technical documentation
- • 200K context window
- • Superior code quality
- • Ethical AI practices
- • Enterprise applications
- • Architecture design
- • Legacy modernization
How to Enable Claude in Your IDE
VS Code Setup
- 1 Install CodeGPT extension from VS Code marketplace
- 2 Open settings and select Claude Sonnet 4.5
- 3 Optional: Connect Anthropic API key for BYOK
- 4 Switch between Sonnet, Opus, and Haiku as needed
JetBrains Setup
- 1 Install CodeGPT plugin from JetBrains marketplace
- 2 Configure Claude Sonnet in plugin settings
- 3 Add Anthropic API key for full control (BYOK)
- 4 Leverage 200K context for large projects
Choose Your Claude Model
Switch between Claude Sonnet (balanced), Opus (powerful), and Haiku (fast) depending on your task
Learn about BYOK with AnthropicFrequently Asked Questions
What is Claude Sonnet 4.5 and how is it different from Claude Opus 4.1?
Claude Sonnet 4.5 (October 2025) is Anthropic's balanced AI model offering the best combination of speed, capability, and cost. Opus 4.1 is the most powerful model with maximum intelligence, while Sonnet 4.5 provides excellent performance at faster speeds. For most coding tasks, Sonnet 4.5 is the optimal choice.
How do I use Claude in my IDE with CodeGPT?
Install the CodeGPT extension in VS Code or JetBrains, open settings and select Claude Sonnet from the model list, optionally add your Anthropic API key for BYOK to get full control over usage, then start using chat, autocomplete, and agent mode powered by Claude. You can switch between Sonnet, Opus, and Haiku as needed.
What are Claude's coding capabilities compared to GPT-5?
Claude Sonnet 4.5 and GPT-5 are both excellent for coding with similar capabilities. Claude excels at security-focused development, technical documentation, and working with large codebases (200K context). It scores 94% on code quality benchmarks vs GPT-5's 93%. Both are top choices—CodeGPT lets you use whichever fits your task best.
Can I use Claude with my own Anthropic API key (BYOK)?
Yes! CodeGPT fully supports BYOK with Anthropic. Simply add your Anthropic API key in settings to use Claude Sonnet, Opus, or Haiku directly through your account. This gives you full control over costs, usage limits, and ensures your code stays private.
What is the 200K token context window and why does it matter?
Claude Sonnet's 200K token context window (roughly 150,000 words) means it can read and understand massive amounts of code at once. This is crucial for analyzing entire large codebases, maintaining context across complex refactoring tasks, understanding multi-file dependencies, and generating code that fits seamlessly with existing patterns. The large context window makes Claude exceptional for enterprise-scale applications.
Which Claude model should I choose (Sonnet vs Opus vs Haiku)?
Choose Claude Sonnet 4.5 for most coding tasks—it's the best balance of quality, speed, and cost. Use Opus 4.1 for the most complex architectural decisions and critical production code where you need maximum intelligence. Use Haiku 4.5 for quick autocomplete, simple tasks, and rapid iteration where speed matters most. CodeGPT makes it easy to switch between all three.
How does Claude handle code security and safety?
Claude is built with Constitutional AI, meaning it's trained to prioritize safety and ethical behavior. For coding, this translates to: identifying security vulnerabilities, suggesting secure coding patterns, avoiding unsafe practices, respecting data privacy principles, and providing explanations for security-critical decisions. Claude is an excellent choice for security-sensitive applications.
What programming languages does Claude support?
Claude has excellent multilingual support across 50+ programming languages including Python, JavaScript, TypeScript, Java, C++, C#, Go, Rust, Swift, Kotlin, PHP, Ruby, Scala, SQL, and more. It understands frameworks, libraries, and modern language features. Claude is particularly strong with complex languages and large codebases.
Get Claude in Your IDE
Start using Claude Sonnet 4.5 with CodeGPT. 200K context window, superior code quality, free to start.
Download VS Code ExtensionFree to start • BYOK available
Enterprise Claude Solutions?
Let's discuss custom AI agents, team deployment, and enterprise Claude integration for your organization
Talk to Our TeamEnterprise support • Custom training