🧠 Introduction
SerpStat is a well-known SEO platform used by marketers, agencies, and businesses for keyword research, competitor analysis, and content optimization. Recently, it introduced a new AI Content Detector, which attempts to classify text as AI or human-written.
Because SerpStat is now appearing among the top 20 results for AI detector–related searches, many users are beginning to test it as a potential free alternative to tools like GPTZero, ZeroGPT, and Copyleaks.
But the key question is:
Can SerpStat actually detect AI text accurately?
To find out, we tested SerpStat across AI text, human writing, mixed text, and TwainGPT-humanized content.
📊 SerpStat AI Detection Results
We tested four types of text:
- Fully AI-generated
- Fully human-written
- Mixed AI + human
- TwainGPT-humanized
SerpStat Detector Results
| Text Type | Expected Result | SerpStat Result |
|---|---|---|
| AI-Generated | High AI | 0% AI |
| Human-Written | Low AI | 3% AI |
| Mixed Text | Medium AI | 99% AI |
| TwainGPT Humanized | Low AI | 0% AI |
🔎 Interpretation
- SerpStat incorrectly labeled AI-generated text as 0% AI
- Human text scored 3% AI, which is acceptable
- Mixed text received 99% AI, which is excessive
- TwainGPT-humanized text scored 0% AI, which is correct
The inconsistency shows the detector is not reliable and cannot be trusted for academic or professional use.
🔍 Comparison With Major AI Detectors
We compared the exact same text across the top AI detectors.
AI-Generated Text Detection
| Detector | Result |
|---|---|
| SerpStat | 0% AI |
| ZeroGPT | 100% AI |
| GPTZero | 100% AI |
| Copyleaks | 100% AI |
SerpStat was the only detector to misidentify AI text.
Human-Written Text Detection
| Detector | Result |
|---|---|
| SerpStat | 3% AI |
| ZeroGPT | 0% AI |
| GPTZero | 1% AI |
| Copyleaks | 0% AI |
All detectors performed well here, including SerpStat.
Mixed Text Detection
| Detector | Result |
|---|---|
| SerpStat | 99% AI |
| ZeroGPT | 51% AI |
| GPTZero | 76% AI |
| Copyleaks | 0% AI |
SerpStat dramatically overflags mixed content.
TwainGPT Humanized Detection
| Detector | Result |
|---|---|
| SerpStat | 0% AI |
| ZeroGPT | 0% AI |
| GPTZero | 0% AI |
| Copyleaks | 0% AI |
All detectors correctly recognized the humanized text.
🖥️ UI & User Experience
SerpStat’s core SEO platform has a polished interface, but the AI detector interface feels outdated:
- No sentence-level highlighting
- No explanation of why text is flagged
- Very basic layout
It feels more like an experimental add-on than a serious detection tool.
💰 Pricing
SerpStat’s AI detector is completely free.
There are no subscriptions, usage limits, or credit requirements. While this is a positive, the lack of reliable results makes the free price tag less meaningful.
📉 Overall Reliability
SerpStat’s AI detector shows several problems:
- Incorrectly marks AI text as human
- Overflags mixed text
- Provides inconsistent results
- Lacks transparency and detailed scoring
- Not suitable for academic or professional use
At best, it functions as a rough indicator, not a dependable AI detection tool.
📊 Scorecard
| Category | Score | Notes |
|---|---|---|
| Accuracy | ⭐☆☆☆☆ (1/5) | Misidentifies AI text and overflags mixed writing. |
| UI & UX | ⭐⭐☆☆☆ (2/5) | Outdated interface with minimal detail. |
| Value | ⭐⭐☆☆☆ (2/5) | Free, but unreliable. |
| Usefulness | ⭐☆☆☆☆ (1/5) | Not suitable for academic or professional detection. |
Overall Rating: ⭐☆☆☆☆ (1/5)
❌ Final Verdict
SerpStat’s AI detector is not reliable enough to use for AI detection.
Our testing showed that it fails to detect fully AI-generated text, significantly overflags mixed content, and produces inconsistent results across similar inputs. Because of this, it cannot be trusted for academic or professional use.
We do not recommend SerpStat’s AI detector.
📌 FAQ
Is SerpStat accurate for detecting AI?
No, our testing showed it mislabels AI-generated text and overflags mixed content.
Is SerpStat safe for academic AI detection?
No, due to inconsistent and inaccurate results, it should not be used for academic purposes.
Is SerpStat’s AI detector free?
Yes, SerpStat’s AI detector is free to use.
Why does SerpStat rank for “AI detector” searches?
Its strong domain authority helps it rank well, rather than the accuracy of the detector itself.
What is a better alternative?
Dedicated tools like GPTZero, Copyleaks, ZeroGPT, or TwainGPT provide more reliable results.