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Head-to-head · AI Content Detectors

GPTZero vs Smodin AI Detector

  • Updated Oct 2026
  • Both researched from official sources
  • 5 checks side by side
Higher score GPTZero #2 in AI Content Detectors 9.2/10 Free plan · 14-day trial Free planFree trial✓ 4 of 4 features Visit GPTZero
Smodin AI Detector #8 in AI Content Detectors 8.4/10 Paid ✓ 2 of 4 features Visit Smodin

GPTZero leads on 0 checks, Smodin AI Detector on 0, and 5 are even. Who comes out ahead on the 5 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreGPTZero · 9.2/10
  • Free planonly GPTZero
  • Free trialonly GPTZero
  • Most featuresGPTZero · 4 of 4

GPTZero scores higher on our rubric for ai content detectors: 9.2 against 8.4 out of 10; our editors rank them #2 and #8.

GPTZero is the better fit for educators using process verification and LMS tools. Smodin AI Detector is the better fit for multilingual document screening.

  • GPTZero fits best

    Educators using process verification and LMS tools

  • Smodin AI Detector fits best

    Multilingual document screening

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Side by side

Feature GPTZero 9.2/10 Visit ↗ Smodin AI Detector 8.4/10 Visit ↗
At a glance
Editor score 9.2 8.4
Ranking #2 in AI Content Detectors #8 in AI Content Detectors
Best for Educators using process verification and LMS tools Multilingual document screening
Pricing model Free plan + paid Paid
Starting price Free plan · 14-day trial $10/mo
Free plan ✓ (best) Not checked yet
Free trial 14 days —
Deployment Cloud, Browser extension Cloud, Browser extension
Platforms Web, Chrome extension Web, Chrome extension
Integrations 5 integrations 2 integrations
Features GPTZero 4/4 · Smodin AI Detector 2/4
Paraphrase detection ✓ (best) Not checked yet
API access ✓ ✓
Browser extension ✓ ✓
Batch scanning ✓ (best) Not checked yet
Specs
Detection languages 5 languages Not checked yet
Word limit Not checked yet Not checked yet
Our review
Pros
  • Document and sentence-level detection with paraphrase scanning
  • Writing-process replay, verification reports, and batch scanning
  • Google Classroom, Canvas, Moodle, Zapier, API, and Chrome extension
  • Detects ChatGPT, GPT, Claude, Gemini, and Llama content
  • Supports 100+ detection languages and four document formats
  • Offers probability scores, sentence analysis, browser access, and an API
Cons
  • Paid plan pricing is not presented as a fixed public amount
  • The product is not open source
  • Its focus is detection and verification rather than content creation
  • The listed Starter and Premium prices require annual billing
  • Advanced detection and humanization are reserved for Premium
  • The broad feature set extends beyond a detector-focused workflow
Our verdict

GPTZero is an AI content detection service for educators, students, writers, publishers, recruiters, and businesses. Users can paste text or upload documents for document-level results with sentence-level highlighting. It detects…

Read the review →

Smodin AI Detector analyzes essays, documents, articles, marketing content, and other written material for signals associated with AI-generated text. It is designed for students, educators, researchers, publishers, editors, content teams,…

Read the review →
  1. GPTZeroAI Content Detectors 9.2Free plan · 14-day trial
  2. Smodin AI DetectorAI Content Detectors 8.4Paid

Strengths and trade-offs

  • GPTZero — where it wins

    • Document and sentence-level detection with paraphrase scanning
    • Writing-process replay, verification reports, and batch scanning
    • Google Classroom, Canvas, Moodle, Zapier, API, and Chrome extension

    Where it doesn't

    • Paid plan pricing is not presented as a fixed public amount
    • The product is not open source
    • Its focus is detection and verification rather than content creation

  • Smodin AI Detector — where it wins

    • Detects ChatGPT, GPT, Claude, Gemini, and Llama content
    • Supports 100+ detection languages and four document formats
    • Offers probability scores, sentence analysis, browser access, and an API

    Where it doesn't

    • The listed Starter and Premium prices require annual billing
    • Advanced detection and humanization are reserved for Premium
    • The broad feature set extends beyond a detector-focused workflow
  • GPTZero9.2/10 · Free plan · 14-day trial

    A broad detection and verification toolkit for education workflows.

    Visit GPTZeroFull verdict →
  • Smodin AI Detector8.4/10 · Paid

    A multilingual detector with document analysis, browser access, integrations, and an API.

    Visit SmodinFull verdict →

More comparisons

All AI content detectors comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update