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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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Dev Platform
Agents
Voice
Video
Audio
Research
Coding
Chatbots
Image
Meetings
Design
Productivity
Writing
Data
Marketing
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Replicate
S
Raycast AI
S
Hume AI
A
Gemini
A
TaglineRun any open-source AI model with an API call.Mac launcher + AI. Command-bar genius.Voice AI that reads + expresses emotion.Google's answer. Best integrated with Workspace + free for a lot.
CategoryDev PlatformProductivityVoiceChatbots
PricingPay per second of computeFree (app) + $10/mo AIFree tier + pay-as-you-goFree + $20/mo Advanced (bundled with 2TB Drive)
Best forDevelopers using open-source models (Flux, SDXL, Whisper, etc).Power users on Mac who type a lot.Therapy apps, customer service, any voice agent where emotion matters.Anyone already on Google, research tasks, summarizing long documents.
Strengths
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
  • Invoke AI from anywhere on Mac with a hotkey
  • Choose your model (Claude, GPT, etc.)
  • AI Commands for repeatable workflows
  • Detects + mirrors emotional tone
  • EVI (Empathic Voice Interface) feels different
  • Expressive voice output
  • Native Google Workspace integration
  • Very long context (1M+)
  • Deep Research feature
  • Free tier is generous
Weaknesses
  • Cold starts on less-popular models
  • Pricing gets real at scale
  • Mac-only
  • Monthly AI sub on top of free app
  • Niche use case
  • Pricing ramps fast
  • Writing quality trails Claude
  • Over-refusals on edge content
  • UI is cluttered
Kai's verdictS-tier for open-source model APIs. The default in this space.S-tier if you're on Mac. The fastest way to get AI answers without context-switching.A-tier in its niche. The only one that actually gets emotion right.A-tier. The Deep Research feature is genuinely useful. Don't sleep on it if you're already paying Google.
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