Skip to content
effecthub

GPTZero vs WasItAIGenerated

Two fact sheets from our own research, side by side — pricing, platforms, API access and status re-checked by us rather than quoted from the vendors.

The short answer

Entry price
GPTZero from $12.99/mo, WasItAIGenerated from $10 once — different billing units, so no direct winner
Free plan
Both have one
Public API
Both have one
Higher Trust score
GPTZero — 86 vs 80 for WasItAIGenerated
Best fit
GPTZero: Schools and universities that need a defensible second opinion, not a verdict · WasItAIGenerated: Teams screening submissions across mixed media, not just text

From our own records as of each tool's last check. Anything we have not confirmed is left out rather than guessed. How we verify

GPTZeroEstimates whether text was machine-written and flags the sentencesWasItAIGeneratedDetects AI-generated text, images, documents, voice, and video, with a confidence score and REST API.

Side by side

FactGPTZeroWasItAIGenerated
CategoryAI Detection & HumanizersAI Detection & Humanizers
Pricing modelFreemiumFreemium
Starts at$12.99/mo$10 once
Public APIYesYes
Trust score86 / 10080 / 100
PlatformsWeb, API, Chrome extensionWeb, API
CompanyGPTZeroPatrick Gerard
Launched2023—
Last verifiedOct 15, 2026Oct 15, 2026

What our research says

GPTZero

One of the detectors schools most often adopt, and the sentence-level highlighting is what makes a result usable in a conversation with a student rather than a bare percentage. No detector is evidence of authorship, though, and the cheap Essential tier is gone from the pricing page, so paid use now starts at Premium.

Pros

  • Sentence-level highlighting shows what drove the score instead of a bare percentage
  • Batch uploads and a developer API make it usable inside an existing review workflow
  • Free tier is generous enough to evaluate properly before paying

Cons

  • The Essential tier has been dropped, so the cheapest paid plan is Premium at $12.99 a month on annual billing or $23.99 month to month
  • The developer API is priced separately from the writing plans, starting at $45 a month
  • Word-metered quotas punish long documents disproportionately
  • Detection accuracy remains contested and the tool cannot prove authorship

WasItAIGenerated

WasItAIGenerated covers more content types than most detectors in this space, text, images, documents, voice, and video, all behind one credit system and a documented API. Credit costs differ a lot by content type, so the effective price per check depends heavily on what you are scanning.

Pros

  • Covers text, image, document, voice, and video detection in one product
  • Documented REST API with per-content-type credit pricing
  • Free tier of 1,000 credits is enough to test the tool before paying

Cons

  • Credit costs vary a lot by content type, so budgeting requires knowing your mix in advance
  • AI-detection scores of any kind carry real false-positive and false-negative risk, not specific to this vendor
  • The unlimited website plan does not include API access; that requires the $299/month tier

Which one fits

Choose GPTZero if you need

  • Schools and universities that need a defensible second opinion, not a verdict
  • Editors screening freelance submissions at volume
  • Teams wanting provenance reporting on documents they commissioned

Choose WasItAIGenerated if you need

  • Teams screening submissions across mixed media, not just text
  • Developers wanting API-based detection instead of a manual web upload

GPTZero vs WasItAIGenerated: the questions people ask

Is GPTZero cheaper than WasItAIGenerated?

They charge in different units, so there is no like-for-like answer: GPTZero starts at $12.99/mo, WasItAIGenerated at $10 once. Entry price is the lowest paid plan as we last verified it.

Does GPTZero or WasItAIGenerated have a free tier?

Both: GPTZero has a free tier, and WasItAIGenerated has a free tier.

Which has a public API, GPTZero or WasItAIGenerated?

Both ship a public API, so either can be built on; the fact table above shows the platforms each one runs on.

More comparisons

Browse all AI Detection & Humanizers →