Skip to content
Sign in Submit your app

Kai vs UsingOpen

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Kai compared with UsingOpen
DetailKai logo KaiUsingOpen logo UsingOpen
What it doesAI executive assistant that proactively manages your calendar, email, and tasks Free AI chat with open models, no account or sign-up required
StageNot given Not given
FoundedNot given Not given
Based inCH Not given
Pricing modelFreemium Free
PricingFree trial with no credit card required. Base plan $20/month per user. Pro plan $50/month per user with 5x the usage of Base. Ultra plan $100/month per user with 10x the usage of Base. All plans include every feature. Free with 10 prompts per day. UsingOpen Studio desktop app is $19 USD one-time purchase, or ¥99 CNY in mainland China.
Key features
  • Task capture from calls and emails
  • Meeting briefings and prep materials
  • Mobile app for iPhone and Android
  • Booking pages with free/busy information
  • Access to 20+ open-weight AI models including DeepSeek, Qwen, GLM, Gemma, GPT-OSS, Kimi K3 and MiniMax M3
  • No account required, no sign-up, no email or password needed
  • 10 free prompts per day, reset at midnight UTC
  • Chat history saved locally on your device, never sent to servers
  • Streaming responses with visible reasoning for thinking models
  • Compare two models side by side in the same conversation
  • Live model availability status and real-time capacity information
  • Responsive design, installable as standalone mobile app
What makes it different
  • No bot joins your meetings
  • Nothing sends without your explicit approval
  • Integrates directly with existing accounts, no new workflow needed
  • Actions linked to their source email or meeting
  • Replaces multiple single-purpose tools
  • Complete privacy - chat history stays only on your device and is never sent to servers
  • Model picker with real-time availability, not a single locked-in assistant
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)50 +1 (up) since last checkNot checked yet no change since last check
Trust Flow (Majestic)111
Citation Flow (Majestic)3417
Referring domains (Majestic)1735

5 details filled in for both companies.

More alternatives to Kai More alternatives to UsingOpen

Get help