As we all know it ZeroGPT is one of the most used AI content detectors out there. However, can it reliably detect Claude Opus 4? The short answer is NO if you are asking about 100% sure detection. The longer answer is the devil lies in the details. Keep reading to know more about it.
Why ZeroGPT might fail to detect Claude Opus 4?
The simple answer is: Claude Opus 4 is brand new. ZeroGPT hasn’t updated their training data to include the patterns and nuances of Opus 4’s outputs. You can see it on ZeroGPT’s website as well. They do claim robust detection for major LLMs, but they don’t specifically advertise detection for newly released models like Claude Opus 4.
Claude Opus 4 is not made to bypass ZeroGPT. It just so happens that ZeroGPT doesn’t have enough data on it yet. This means if it is not trained to handle Claude Opus 4’s signature style, it won’t be able to reliably detect it.
I tested 10 samples on ZeroGPT written by Claude Opus 4 and to my surprise some of it worked. You can view the results in this google sheet. Unlike my previous posts, where I simply say “No” it won’t work, I would say that this works at the moment. One simple reason for it is that since Opus 4 is new, ZeroGPT might not have updated their training data. Once they update their training samples with outputs from Opus 4, they might be better able to detect text from it.
What is Claude Opus 4?
Claude Opus 4, often referred to as “the world’s best coding model,” is designed with advanced reasoning and coding capabilities. It can run in two modes: near-instant responses and what is called “extended thinking with tool use.” The extended thinking mode allows it to reason for a longer time, possibly referencing local files (if the developer grants that) and storing memory files for continuity. In simpler terms, it’s the next generation of AI that can handle complex tasks over extended sessions without losing context.
Here are some of the frequently cited metrics for Opus 4:
- SWE-bench score: 72.5%
- Terminal-bench score: 43.2%
- 7-hour open-source refactor at Rakuten without dropping performance
It’s like a direct competitor to older models from other companies, but with more refined coding and problem-solving skills.
ZeroGPT’s Key Features
ZeroGPT on the other hand is known for AI content detection. It can highlight every sentence suspected of being AI-generated, it shows a gauge indicating the AI percentage, and you can get an automatic PDF report. They also offer tools for paraphrasing, summarizing, grammar checking, and more.
One crucial point: ZeroGPT uses deep learning with advanced text detection models that are trained on huge datasets. They do so in different languages, which means their AI detection is not restricted to English. However, brand-new models like Opus 4 tend to slip under the radar initially until ZeroGPT updates its data.
Comparison Table
| Aspect | Claude Opus 4 | ZeroGPT |
|---|---|---|
| Release Focus | Next-gen coding & reasoning | AI detection for text & plagiarism |
| Latest Capability | Extended thinking with local memory | DeepAnalyse™ to detect synthetic text |
| Primary Strength | Sustained coding performance | Highlighting AI text at sentence-level |
| Weakness | Not specifically built to bypass AI detectors | Slower to detect brand-new LLM outputs |
Frequently Asked Questions
Q1. Does ZeroGPT detect Claude Opus 4?
At this moment, it might partially detect it but it’s not as accurate. ZeroGPT might highlight some sentences as AI but generally it underestimates Claude Opus 4’s text.
Q2. Is using Claude Opus 4 content risky?
If you’re worried about detection, you should know that ZeroGPT or any other AI detector could eventually flag it once they incorporate new samples. If you want to stay on the safe side, always do your own manual edits.
Q3. Does Claude Opus 4 get easily detected by other AI detectors?
Most AI detectors rely on older training sets. So, they easily detect ChatGPT or GPT-4 but might slip up with Opus 4 for a while.
Q4. What about ZeroGPT’s other features?
ZeroGPT is not just an AI detector. It offers a plagiarism checker, paraphraser, summarizer, grammar checker, translator, and more. Keep in mind all of these might hamper your stealth if you’re trying to remain undetected.
The Bottom Line
ZeroGPT is a powerful AI detection solution that is widely used by millions of users. However, it is not yet fully prepared to detect Claude Opus 4’s brand-new writing patterns. If you rely on ZeroGPT for detection, you might miss out on Opus 4 text. On the other hand, if you are a user of Claude Opus 4 who’s concerned about detection, you probably have a small window of opportunity right now before ZeroGPT’s upcoming updates.
My own opinion (and advice) is that if you want to go undetected by ZeroGPT, then this is the best time to try Claude Opus 4. One thing is that you might get rate-limited by Anthropic since the model is big and they have pretty hard rate-limits on it now.
