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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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Chatbots
Research
Coding
Image
Video
Voice
Meetings
Design
Productivity
Audio
Writing
Agents
Dev Platform
Data
Marketing
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Cartesia
S
Google Veo
A
Claude Code
S
Replicate
S
TaglineUltra-low-latency voice. Built for realtime agents.Google's video model. Baked into Gemini + YouTube Shorts.Anthropic's CLI agent. Opus-powered, operates on your repo directly.Run any open-source AI model with an API call.
CategoryVoiceVideoCodingDev Platform
PricingFree tier + usage-based APIIncluded with Gemini Advanced $20/mo + YouTube creator toolsPart of Claude Pro/Max/Team plansPay per second of compute
Best forDevelopers building voice agents, phone bots, interactive apps.Gemini Advanced users, YouTube Shorts creators.Developers who want an agent, not autocomplete. Large refactors, tests, docs.Developers using open-source models (Flux, SDXL, Whisper, etc).
Strengths
  • < 90ms latency — the fastest in the market
  • Sonic model sounds natural
  • Developer-friendly API
  • Included with Gemini Advanced
  • YouTube Shorts native integration
  • Strong prompt understanding
  • Runs locally, edits your actual files
  • Strong on large codebases with 1M context
  • Great at multi-step tasks
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
Weaknesses
  • Fewer voices than ElevenLabs
  • Less consumer-facing brand
  • Still catching up on quality vs Kling/Runway
  • Less control than pros need
  • Terminal-based — learning curve
  • Can't be used without Claude subscription
  • Cold starts on less-popular models
  • Pricing gets real at scale
Kai's verdictS-tier for realtime. If latency matters more than voice catalog, start here.A-tier if you already pay Gemini. B-tier standalone.S-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement.S-tier for open-source model APIs. The default in this space.
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