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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.
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Beamcast
✓ verifiedFreemium
Browser extension that runs saved or custom AI commands on any website via ChatGPT and Gemini to speed up writing and research.
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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
Free: $0 (50 credits, 10 custom commands)
Premium: $24/year (2,000 credits/month, unlimited commands)
No public pricing
No public pricing
Core features
- ✦Run AI commands on any website via text selection
- ✦Built-in library of AI commands
- ✦Custom on-the-fly prompts
- ✦Cloud sync across browsers
- ✦Powered by OpenAI and Gemini
- ✦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
- →Rewrite or improve text anywhere
- →Answer questions while browsing
- →Speed up coding
- →Boost writing productivity
- →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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