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Redthread vs GPTZero

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

Redthread compared with GPTZero
DetailRedthread logo RedthreadGPTZero logo GPTZero
What it doesAI pentesting platform that proves which vulnerabilities are real with working exploits AI detector that identifies content generated by large language models
StageNot given Not given
FoundedNot given 2023
Based inUS Not given
Pricing modelFreemium Freemium
PricingFree discovery and risk assessment for your entire estate. Pentest scanning priced per scan with optional human reviewer. Agentic Trust & Protection Platform priced per agent identity. Reports and compliance evidence included with platform or as add-on with certified review. Pentest firm partnership Free tier for basic AI detection up to 10,000 characters. Professional plan available with pricing details on subscription page. API pricing available for developers.
Key features
  • Autonomous agent testing against OWASP LLM Top 10 and MITRE ATLAS frameworks
  • Unified estate graph combining agents, applications, code, cloud and infrastructure
  • Shadow-AI discovery to inventory unregistered AI tools across your estate
  • Cloud and infrastructure posture with DSPM and cross-cloud attack path analysis
  • CI/CD gate to scan on every pull request and block merges with proven attack paths
  • Reproducible proofs of concept for every finding with attack steps
  • Three report formats: Letter of Attestation, full technical report, and machine-readable JSON
  • Endpoint telemetry for on-host inventory and security posture monitoring
  • Agentic Trust & Protection Platform with cryptographic identity and signed attestation
  • Continuous re-assessment with drift detection and trend analysis
  • AI detection with 99.9% accuracy
  • Sentence-by-sentence highlighting of AI-generated text
  • Writing Replay showing video proof of writing process
  • Plagiarism detection
  • Grammar checking and writing feedback
  • Chrome extension for browser-based scanning
  • Integration with Canvas and Google Classroom
  • API for developer integration
  • Detects multiple AI models including GPT-5, GPT-6, Gemini, and Claude
  • AI Tutor for writing improvement
What makes it different
  • Every finding is proven with reproducible proof of concept, not inferred or false positive
  • Agentless-first architecture requires no installation for core AI risk assessment and posture discovery
  • Unified graph of entire AI and cloud estate enables detection of cross-layer attack paths
  • Findings automatically mapped to OWASP LLM Top 10, MITRE ATLAS, SOC 2, ISO 27001 and compliance frameworks
  • Free discovery and risk assessment before any paid commitment required
  • 99.9% accuracy rate verified by independent benchmarks from Penn State's AI Research Lab
  • De-biased for ESL learners with only 1% false positive rate for non-native English writing
  • Only detector with Writing Replay showing video proof of authentic writing process
  • Trusted by over 10 million users and 100+ organizations globally
Community votes00
DR (Domain Rating by Ahrefs)Not checked yet no change since last check81 no change since last check
Trust Flow (Majestic)227
Citation Flow (Majestic)2443
Referring domains (Majestic)108387

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