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Side-by-side: what they do, what they cost, what Kai actually thinks. Pass up to 4 tools via ?tools=claude,chatgpt,gemini.
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Windsurf
A
Cartesia
S
Raycast AI
S
TaglineCodeium's agentic IDE. Cascade agent + strong free tier.Ultra-low-latency voice. Built for realtime agents.Mac launcher + AI. Command-bar genius.
Categorycodingvoiceproductivity
PricingFree + $15/mo ProFree tier + usage-based APIFree (app) + $10/mo AI
Best forDevelopers who want Cursor-like power for less money.Developers building voice agents, phone bots, interactive apps.Power users on Mac who type a lot.
Strengths
  • Cheaper than Cursor
  • Cascade agent for multi-file tasks
  • Solid free tier
  • < 90ms latency — the fastest in the market
  • Sonic model sounds natural
  • Developer-friendly API
  • Invoke AI from anywhere on Mac with a hotkey
  • Choose your model (Claude, GPT, etc.)
  • AI Commands for repeatable workflows
Weaknesses
  • Smaller community
  • Model selection more limited
  • Fewer voices than ElevenLabs
  • Less consumer-facing brand
  • Mac-only
  • Monthly AI sub on top of free app
Kai's verdictA-tier. Close second to Cursor. If $5/mo matters, start here.S-tier for realtime. If latency matters more than voice catalog, start here.S-tier if you're on Mac. The fastest way to get AI answers without context-switching.
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