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Code Arena
✓ verifiedFree
Side-by-side arena to compare AI coding models and build multi-file apps, with a public leaderboard and battle mode.
35M visits/mo201 saves
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Google Antigravity
✓ verifiedFree
Google's agentic development platform and IDE for building software with autonomous, Gemini-powered coding agents.
22M visits/mo18K saves
Pricing
No public pricing
No public pricing
No public pricing
Core features
- ✦Universal Agent Support for 32+ agents including Claude, Cursor, and Copilot
- ✦Auto-Translation of skills between different agent formats
- ✦Primer: Automated agent instruction generation from codebase analysis
- ✦Session Memory to persist AI learnings across different projects
- ✦Mesh Network for encrypted P2P inter-agent messaging
- ✦Built-in testing framework and CI/CD integration
- ✦Marketplace with 15,000+ community and official skills
- ✦Head-to-head model comparison
- ✦Battle mode matchups
- ✦Public model leaderboard
- ✦Multi-file app generation
- ✦File uploads as input
- ✦Agent-first IDE experience
- ✦Autonomous planning and code execution
- ✦Integrated editor, terminal and browser control
- ✦Powered by Google's Gemini models
- ✦High-level developer supervision
Use cases
- →Synchronizing AI agent instructions and best practices across an entire engineering team
- →Translating custom skills from one AI editor (like Cursor) to another (like Windsurf) without rewriting
- →Providing AI agents with persistent memory of previous debugging sessions and project context
- →Automating the setup of AI coding assistants for new projects using Primer
- →Choosing the best coding model
- →Benchmarking AI code quality
- →Prototyping small apps
- →Building apps with AI agents
- →Automating multi-step coding tasks
- →Prototyping and iterating on software
- →Assisting developers on complex work
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