Is Gemini 3.7 Flash Content Detectable? Testing Google’s Latest AI Model

On August 13, 2026, just a day after the launch of Grok 4.6, Google also released a new AI model, Gemini 3.7 Flash.

In Google’s launch announcement, Google notes that the Gemini 3.7 Flash model “delivers substantial improvements across software engineering, knowledge work, and web development workflows.”

Gemini 3.7 Flash is one of many recent releases from leading AI companies, such as, 

•  OpenAI: GPT 5.6 Sol, Luna, and Terra
• Anthropic: Claude Fable 5
• DeepSeek: DeepSeek V4 Pro

So, we tested whether the Originality.ai AI Checker could still identify the text generated by Gemini 3.7 Flash as Likely AI.

These are our findings.

The Quick Answer — Is Gemini 3.7 Flash Text Detectable?

Yes, Originality.ai has 99%+ accuracy with AI Allowance (15% settings) for detecting Gemini 3.7 Flash. 

The Gemini 3.7 Flash Detectability Study

With top AI companies continuously releasing new models, it’s crucial for AI detectors to test accuracy on the latest LLMS.

That’s why we at Originality.ai ran an accuracy test as soon as Gemini 3.7 Flash was released.

See an overview of our Gemini 3.7 Flash test below.

The Gemini 3.7 Flash Detectability Test 

Although our AI detection models were not trained on Gemini 3.7 Flash data, this study assesses their capability to identify text generated by Gemini 3.7 Flash.

‍The Dataset:

‍5,000 high-quality human-written samples spanning:

• Domains/Topics: health, news, finance, technology, arts & entertainment
• Content Types: blogs, reviews, expository articles, conversational text
• Prompt Structures: to maximize stylistic and topical diversity

Then, Gemini 3.7 Flash was used to generate completions for each human-written sample prompt.

This produced a balanced dataset to evaluate the accuracy of Originality.ai’s AI detection capabilities.

The Gemini 3.7 Flash Detectability Results

After testing Originality.ai AI Allowance on this dataset, we found that Gemini 3.7 Flash is still highly detectable by the industry-leading Originality.ai AI detector.

These are the accuracy ratings for Gemini 3.7 Flash with Originality.ai AI Allowance:

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Final Thoughts

Although Gemini 3.7 Flash didn’t yet exist when the Originality.ai AI Allowance model was trained, AI Allowance at 15% shows strong generalization performance and achieved an accuracy of 99%+.

So, yes — Gemini 3.7 Flash AI content is still highly detectable by Originality.ai!

Looking to maintain transparency around whether writing is Likely AI or Original, even as new LLMs are released? Try Originality.ai’s AI detector today!

Learn more about AI detection accuracy:

• AI Detection Accuracy Study
• 3rd Party AI Detection Accuracy Studies: Meta-Analysis

AI studies for recently released models:

• DeepSeek
• Grok 4.6
• GPT-5.6
• Claude Fable 5
• Claude Opus 4.7
• Gemini 3
• Grok 4.1 Fast
• GPT-5.3 Instant and GPT-5.4
• GPT-5.5
• Llama 4 Maverick and Llama 4 Scout