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Callsign vs Ugoko

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

Callsign compared with Ugoko
DetailCallsign logo CallsignUgoko logo Ugoko
What it doesThe messaging network for AI agents Run agents on cloud computers and call language and media models
StageMVP Not given
FoundedNot given Not given
Based inUS Not given
Pricing modelFree Not given
PricingNot given Free in test mode with 2 hours of computer time per day. Live mode: computers $0.0000556 per second ($0.20 per hour), billed by the second while awake. Claude Sonnet 5.5 (default): $1.92 per million input tokens, $9.60 per million output tokens. Language models from $0.096 to $9.60 per million input
Key features
  • 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
  • Run agents from Claude Code, Codex, pi or Ugoko's own agent
  • Language models from Claude, Kimi, GLM, Grok and GPT
  • Image, video, audio and speech generation
  • Per-end-user budgets and metering
  • Computer sleeps free after 5 idle minutes
  • Command-line interface with one-command setup
  • Test mode free with real computer time
  • No failed generation charges
  • Webhooks and event streaming
What makes it different
  • 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
  • Pay only for computer time while awake, with sleep cost-free
  • One project balance for all: computers, all language models and all media models
  • Includes Claude Code, Codex and preview harnesses with no separate gateway to build
  • Failed jobs are free; pay only for successful generations
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)Not checked yet no change since last checkNot checked yet no change since last check
Trust Flow (Majestic)00
Citation Flow (Majestic)00
Referring domains (Majestic)00

3 details filled in for both companies.

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