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OsmO vs assistant-ui

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

OsmO compared with assistant-ui
Detail OsmOassistant-ui logo assistant-ui
What it doesAI phone assistant that answers unknown callers, screens spam, takes messages, and makes calls for you Open-source React components and runtimes for building AI chat
StageNot given Not given
FoundedNot given Not given
Based inIN US
Pricing modelFree trial Open source
PricingFree 7-day trial, then OsmO Pro on iPhone (US$9.99 or ₹299) or Basic (US$7.99 or ₹199) and Premium (US$9.99 or ₹299) on Android. Prices are localized by store; see Apple App Store or Google Play for current pricing. The core library is free and MIT licensed. assistant-cloud offers: Free ($0, 200 MAU included), Pro ($50/mo, 500 MAU included plus $0.10 per additional MAU), Enterprise (custom MAU pricing, contact for details).
Key features
  • AI call screening for unknown numbers
  • Custom voice cloning
  • Outbound calls and appointment booking
  • Transcripts and summaries of all calls
  • Custom call-handling instructions
  • Knowledge base for answering caller questions
  • Skip AI list for priority callers
  • Dedicated assistant phone line
  • Recurring weekly calls
  • Works on existing phone number via call forwarding
  • Streaming support for real-time chat output
  • Tool execution and integration
  • Thread persistence and history
  • Voice support
  • Generative UI rendering
  • Message attachments
  • Conversation branching
  • Multi-platform support (React, Vue, React Native, Ink)
  • Runtime adapter support (AI SDK, LangGraph, LangChain)
  • Fully customizable component composition
What makes it different
  • Answers calls in your own cloned voice instead of a generic robot voice
  • Makes outbound calls for you, not just screens incoming calls
  • Screens calls in real-time based on caller intent, not just blocklists
  • Supports multiple languages including Spanish and Hindi
  • No new phone number or SIM swap required
  • Works with any backend through pluggable runtime adapters
  • Complete source code available for customization via CLI
  • Production-ready runtime handling streaming, tools, and state
  • Free MIT license with optional paid cloud persistence
  • Cross-platform support with single chat model
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)17 −1 (down) since last check53 +1 (up) since last check
Trust Flow (Majestic)612
Citation Flow (Majestic)2639
Referring domains (Majestic)50572

6 details filled in for both companies.

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