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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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Replicate
S
Raycast AI
S
Grammarly
A
Ollama
S
TaglineRun any open-source AI model with an API call.Mac launcher + AI. Command-bar genius.Grammar check + tone + AI drafting, everywhere you type.Run LLMs locally. One-line install, GUI optional.
CategoryDev PlatformProductivityWritingDev Platform
PricingPay per second of computeFree (app) + $10/mo AIFree + $12-$15/mo Premium + team plansFree + open source
Best forDevelopers using open-source models (Flux, SDXL, Whisper, etc).Power users on Mac who type a lot.Non-native English writers, business email, anyone who types a lot.Devs wanting offline/local LLMs for privacy or experimentation.
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
  • Works in every browser/app
  • Now has generative AI (GrammarlyGO)
  • Tone detection + suggestions
  • Run Llama, Mistral, Qwen, etc. on your laptop
  • Simple CLI + API
  • Hardware-aware (picks the right quant)
Weaknesses
  • Cold starts on less-popular models
  • Pricing gets real at scale
  • Mac-only
  • Monthly AI sub on top of free app
  • Can feel naggy
  • Premium features gate basics
  • Privacy concerns (reads your writing)
  • Needs beefy laptop for larger models
  • Speed way behind cloud APIs
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 for non-native English speakers. B-tier if your English is already strong — Claude does better with tone.S-tier for local inference. If you care about privacy or want to tinker, install this today.
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