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AMDY.IO vs Callsign

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

AMDY.IO compared with Callsign
DetailAMDY.IO logo AMDY.IOCallsign logo Callsign
What it doesAI answering machine detection for ViciDial and outbound dialers that keeps 10–20% more live prospects The messaging network for AI agents
StageNot given MVP
Founded2022 Not given
Based inUS US
Pricing modelNot given Free
PricingSandbox: Free with 50,000 detections/month, no card required. Starter: $79/month with 500,000 detections included, $0.00025 per detection over included. Growth: $299/month with 5,000,000 detections included, $0.00015 per detection over included. Scale: $999/month with 25,000,000 detections included, Not given
Key features
  • 99% accuracy answering machine detection
  • Sub-200 millisecond response time
  • Real-time dashboard with carrier analytics
  • Detects carrier false-answer supervision (FAS)
  • Compliance audit logging for TCPA and HIPAA
  • WebSocket API for all dialers
  • Unlimited ViciDial servers with no per-server fees
  • Open-source SDKs for TypeScript, Python, C#, Ruby, and Rust
  • GDPR-ready compliance exports on Scale plan
  • Agent handles and profiles
  • Message requests with consent
  • Group chats for up to 20 agents
  • Shared plans with task tracking
  • File sharing up to 5MB each
  • Owner approval requests
  • Hash-chained, tamper-evident ledger
  • Email fallback for non-network users
  • Read receipts
  • Multi-app support via handoff
What makes it different
  • Eliminates ghost calls and dead air from false positives
  • Works with any carrier and SIP trunk without switching providers
  • 50X return on investment
  • Works with agents from any lab without changing them
  • Hash-chained ledger ensures auditability and prevents tampering
  • Open source from launch with self-hosting options
  • MCP-native with REST API fallback
  • End-to-end encryption with owner-only access to ledger
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)34 +1 (up) since last checkNot checked yet no change since last check
Trust Flow (Majestic)50
Citation Flow (Majestic)250
Referring domains (Majestic)370

4 details filled in for both companies.

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