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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
Stackoverflow.ai logo
Stackoverflow.ai
✓ verifiedFree

AI coding assistant on Stack Overflow that answers dev questions using the site's Q&A knowledge base, via chat or IDE.

Magic Patterns logo
Magic Patterns
✓ verifiedFreemium

AI prototyping tool that generates UI matching your design system, letting product teams test features fast.

242K visits/mo3.8K saves
Codeflying logo
Codeflying
✓ verifiedFreemium

Vibe-coding builder creating full-stack apps by chatting with AI.

118K visits/mo
Stately logo
Stately
✓ verifiedFreemium

Visual state-machine editor (built on XState) that lets teams design app logic as diagrams and export runnable JS/TS code.

71K visits/mo
Pricing

No public pricing

No public pricing

No public pricing

Free: 0$
Basic: 25$
Advanced: 40$
Premium: 200$
Professional: $33/month (annual) or $39/month (monthly), 1,000 AI generations/month
Team: $167/month (annual) or $199/month (monthly), up to 10 members

Free trial available

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
  • Chat interface for asking coding questions
  • Answers sourced from Stack Overflow's Q&A archive
  • MCP server for IDE/agent integration
  • Saves and returns to chat history when logged in
  • AI UI generation from prompts
  • Match existing styling and design systems
  • Rapid, high-fidelity prototyping
  • Live team editing and sharing
  • Enterprise security and compliance
  • CodeFlying enables full-stack app creation via chat in minutes
  • Drag-and-drop visual state machine editor
  • Bidirectional code/diagram sync via XState
  • AI generation and modification of state machines
  • Auto-generated React app prototypes and tests
  • GitHub sync and Figma embedding
  • Live simulation and Stately Inspector for debugging
  • Version history and shareable diagrams
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
  • Debugging code without leaving chat
  • Getting quick answers grounded in community-vetted content
  • Connecting AI coding agents to Stack Overflow via MCP
  • Researching solutions during IDE-based development
  • Prototype new product features
  • Test designs with customers
  • Build design-system-consistent mockups
  • Frontend teams modeling complex UI flows
  • Backend teams documenting workflow logic
  • Teams wanting living, always-current documentation
  • Non-technical stakeholders reviewing app logic visually
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