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M91 vs Search2o

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 Search2o
DetailM91 logo M91Search2o logo Search2o
What it doesHuman-in-the-loop approval for AI agents A platform to build, run, and use AI microagents through search
StageNot given MVP
FoundedNot given Not given
Based inNot given US
Pricing modelFree Free trial
PricingFree forever with all features included The agent server is free and source available with no license fee. Search2o Cloud is free during the beta period. Production pricing will include a platform fee, developer fee, storage fee, and usage fee with no per-user charges. Paid service planned for January 2027.
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
  • Built-in agent discovery and multi-agent conversations
  • Agent framework to define and publish agents
  • Encrypted conversations and memories by default
  • Multi-user access with four roles plus service accounts
  • Human-in-the-loop controls for critical actions
  • Stateless horizontally scalable architecture
  • Environment profiles for dev and prod
  • Source available server and UI
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
  • Search that retrieves and runs AI workflows instead of matching documents
  • Agents that combine deterministic workflows with LLM-driven reasoning
  • Hybrid cloud architecture requiring only stateless servers in your environment
  • No per-user licensing, pay only for developers, storage and usage
  • Enterprise-grade reliability and security standards
Community votes00
DR (Domain Rating by Ahrefs)73 no change since last check2 −1 (down) since last check
Trust Flow (Majestic)10
Citation Flow (Majestic)124
Referring domains (Majestic)012

5 details filled in for both companies.

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