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COLVO vs Rystic

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

COLVO compared with Rystic
DetailCOLVO logo COLVORystic logo Rystic
What it doesTest and guard AI agents with outcome verification, not reply verification Realistic API simulators for training and testing
StageNot given Not given
FoundedNot given Not given
Based inIT US
Pricing modelFreemium Freemium
PricingFree: €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. Free: $0 with GitHub, Linear and Slack simulators, 10 free hours per month. Pro: $89.99 per seat per month with full catalog, $100 usage credit per seat, $0.012 per simulator-minute after credit. Enterprise: custom pricing.
Key features
  • 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
  • Slack simulator
  • GitHub simulator
  • Stripe simulator
  • Kalshi simulator
  • Verified against live APIs
  • Latency and fault injection
  • Settable state
  • Local and CI execution
  • Verified UIs
What makes it different
  • 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
  • Validated against real APIs daily with published accuracy percentages
  • Stateful simulators that maintain state across calls
  • Local execution with no rate limits
  • Supports 20+ API integrations including Stripe, GitHub and Slack
Community votes00
DR (Domain Rating by Ahrefs)Not checked yet no change since last check2 no change since last check
Trust Flow (Majestic)013
Citation Flow (Majestic)030
Referring domains (Majestic)041

6 details filled in for both companies.

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