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M91 vs Leash

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

M91 compared with Leash
DetailM91 logo M91Leash logo Leash
What it doesHuman-in-the-loop approval for AI agents Spend control for AI agents
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelFree Paid
PricingFree forever with all features included Starter $11/month for 1 user and up to 3 devices with spend caps, kill switch, loop detection, 30 days of history and email alerts. Pro $22/month for up to 5 members and 10 devices with everything in Starter plus Slack and Discord alerts, shared team budgets, 1 year of history and invoice reconcilia
Key features
  • Alerts on iPhone and Android with answer buttons
  • Phone call escalation for high and critical alerts
  • Breaks through silent mode and Do Not Disturb
  • Attachments and notes on every alert
  • Broadcast to a channel with one person taking ownership
  • See who acted and who ignored alerts
  • Answer buttons set by you or your AI
  • Callback webhooks to return answers to your code
  • Setup via pasted prompt or API key-free send link
  • Integration with AI frameworks, automation platforms and HTTP API
  • Loop detection to catch runaway agents
What makes it different
  • Full-volume alerts that interrupt even when phone is silenced
  • No SDK, API key or card required to start
  • Free forever with every feature for every team member
  • Escalates to phone calls for critical alerts that go unanswered
  • Works with existing AI agents, workflows and monitoring tools
  • Local by default with provider keys staying on your machine
  • Cost reserved before requests reach the provider to prevent overages
  • Works offline with local caps and kill switch continuing to function
  • Supports multiple models and providers including Claude, OpenAI and Anthropic
  • Team controls with scoped device access and shared budgets
Community votes00
DR (Domain Rating by Ahrefs)73 no change since last checkNot checked yet no change since last check
Trust Flow (Majestic)10
Citation Flow (Majestic)10
Referring domains (Majestic)00

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