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ZeroGPT vs COLVO

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

ZeroGPT compared with COLVO
DetailZeroGPT logo ZeroGPTCOLVO logo COLVO
What it doesAI content detector and writing toolkit for identifying AI-generated text and improving writing quality Test and guard AI agents with outcome verification, not reply verification
StageNot given Not given
FoundedNot given Not given
Based inUS IT
Pricing modelFreemium Freemium
PricingFree plan available with no credit card required. Personal and Business/EDU plans with monthly or annual billing options. Annual plans offer 40% discount. Enterprise plans available with custom solutions. API available on pay-as-you-go basis. Free: €0/month with 100 test runs per month; Test: €19/month with 2,000 runs per month; Guard: €99/month with unlimited runs plus live guard features. AI usage is metered separately at cost.
Key features
  • PDF report generation
  • Plagiarism detection across billions of sources
  • Isolated sandbox with fresh fake accounts for testing
  • 88 scenario templates for refunds, cancellations, pauses and plan changes
  • CI gate and CLI with dependency-free deployment
  • Policy gate with ALLOW/REVIEW/HOLD/DENY decisions
  • Human approval for risky actions
  • Independent verification of outcome against ground-truth state
  • Guardrails with prompt injection and PII detection
  • Per-end-user spending caps in rolling windows
  • Append-only evidence log with JSON, CSV and PDF export
  • GitHub Action integration for automated testing
What makes it different
  • Detects AI from 35+ LLM families including GPT-6, Gemini, and Claude
  • Supports all languages with consistent accuracy
  • User data never used for AI model training
  • Deterministic verdicts from explicit state checks, not language model decisions
  • No-cost deterministic testing; AI features are optional and separately metered
  • Integrated sandbox testing and production guarding in one platform
  • Idempotent and exactly-once action execution with retry safety
Community votes00
DR (Domain Rating by Ahrefs)79 −1 (down) since last checkNot checked yet no change since last check
Trust Flow (Majestic)330
Citation Flow (Majestic)400
Referring domains (Majestic)62890

6 details filled in for both companies.

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