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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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Taskade
B
OpenRouter
S
Grammarly
A
TaglineAI project management with agents for each team.One API, every model. Pay-as-you-go, no subscriptions.Grammar check + tone + AI drafting, everywhere you type.
CategoryProductivityDev PlatformWriting
PricingFree + $8-$20/user/moPay per token — model-dependentFree + $12-$15/mo Premium + team plans
Best forSmall teams wanting AI baked into project management.Developers experimenting across models. Apps that want fallback logic.Non-native English writers, business email, anyone who types a lot.
Strengths
  • Custom AI agents per project
  • Doc + tasks + kanban in one
  • Affordable for teams
  • 300+ models from one endpoint
  • Automatic fallbacks between providers
  • No subscription — just pay what you use
  • Works in every browser/app
  • Now has generative AI (GrammarlyGO)
  • Tone detection + suggestions
Weaknesses
  • Feature sprawl
  • AI agents need tuning to be useful
  • Slight markup over direct API
  • Some provider features not exposed
  • Can feel naggy
  • Premium features gate basics
  • Privacy concerns (reads your writing)
Kai's verdictB-tier. Solid product but crowded market. Try it if Notion AI feels too generic.S-tier for model-shopping. I use this for every prototype before committing.A-tier for non-native English speakers. B-tier if your English is already strong — Claude does better with tone.
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