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Side-by-side features, use cases and pricing — because the right pick depends on your job and budget, not just the ranking.

Gemini Code Assist logo
Gemini Code Assist
✓ verifiedFreemium

Google's AI coding assistant for code completion, generation, chat and review across IDEs and GitHub.

559K visits/mo
MarsCode logo
MarsCode
✓ verifiedFree

AI-powered IDE with code completion, generation, explanation and debugging, plus a cloud dev environment, for developers.

69K visits/mo
The New GitBook logo
The New GitBook
✓ verifiedFreemium

Documentation platform for publishing accurate, AI-ready docs sites, with Git sync and an MCP server for AI tools.

653K visits/mo2.9K saves
Windsurf Editor logo
Windsurf Editor
✓ verifiedFree trial

AI-powered code editor with agentic workflows for developers.

3.3M visits/mo
BlackBox AI logo
BlackBox AI
✓ verifiedFreemium

AI coding platform routing many agents and models through one encrypted, usage-based endpoint with CLI, IDE and multi-agent execution.

3.9M visits/mo
Pricing

No public pricing

No public pricing

No public pricing

Free trial available

No public pricing

Pro: $10/mo
Pro Plus: $20/mo
Pro Max: $40/mo
Core features
  • AI code completion and suggestions
  • Natural-language code generation
  • In-IDE chat assistance
  • AI code review
  • IDE integrations (VS Code, JetBrains, etc.)
  • GitHub integration
  • AI code completion and snippet generation
  • Natural-language code generation
  • Code explanation and AI Q&A
  • Automated bug detection and fixes
  • Zero-config cloud development environment
  • Project creation from templates or Git
  • Publish structured documentation sites
  • Git sync for docs-as-code workflows
  • AI setup agent to build and import docs
  • GitBook MCP server for AI access
  • Enterprise controls
  • Free tier to start
  • AI-powered code completion and suggestions
  • Automated lint fixing
  • Cascade agent for advanced coding assistance
  • Integrated app building and deployment
  • MCP server support for custom tools
  • Terminal command integration
  • Memory of codebase structure and workflow
  • Unified encrypted inference endpoint
  • Multi-agent parallel execution
  • CLI, IDE, and API access
  • App builder and remote coding agents
  • Chairman LLM output evaluation
  • 35+ IDE integrations
Use cases
  • Speeding up coding with AI completions
  • Generating code from plain-language prompts
  • Getting in-editor help and explanations
  • Reviewing pull requests with AI
  • Understanding unfamiliar codebases
  • Writing and completing code faster with AI
  • Onboarding to unfamiliar codebases
  • Debugging and optimizing code
  • Spinning up dev environments in the browser
  • Publish product and API documentation
  • Maintain docs-as-code with Git sync
  • Make docs consumable by AI assistants
  • Import existing docs into a hosted site
  • Accelerating software development by automating repetitive tasks
  • Reducing onboarding time for new developers
  • Improving code quality and reducing tech debt
  • Streamlining the app building and deployment process
  • Enhancing developer productivity by keeping them in a state of flow
  • Automating refactors, tests, and migrations
  • Running competing AI coding agents
  • Building apps from prompts
  • Integrating agents into CI/CD
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