GPTZero vs Pangram: AI Detector Accuracy Comparison
See how GPTZero compares to Pangram in 2025. Our benchmark shows GPTZero leading in accuracy, recall, and classroom reliability.
·
5 min read
Emily Napier
GPTZero performance on Claude Sonnet 4.5
GPTZero achieved 97% recall on Claude Sonnet 4.5 at 1% false positives, surpassing its initial 95% on GPT-5. Detection remains strong across new models, with recall now over 99%.
·
1 min read
GPTZero detects GPT-5 even better in our August update
In GPTZero's August 2025 update, we improved our GPT-5 detection rate to over 97%, adapting quickly to the latest AI models.
·
1 min read
GPTZero’s Massive AI Detector Update for Summer 2025
GPTZero’s new Model 3.7b improves drastically on the latest language models from the top providers, just in time for the new 2025/2026 school year.
·
3 min read
Behind the Scenes: Introducing “Lightly edited by AI”
With our latest model update, GPTZero introduces higher granularity in our AI detector by adding a new classification called “Lightly edited by AI” or “Polished by AI”. This tag identifies text originally written by a human and later improved by AI.
·
8 min read
Behind the Scenes: Multilingual Detection Update
Back in April, we released a major update (Model 3.1m) that outperformed competitors across the board. Since then, we’ve trained on more challenging human and AI data, and have achieved a less than 1% false positive rate on all supported languages (Model 3.2m).
·
2 min read
Behind the Scenes: Multilingual Detection
Here at GPTZero, we’ve just launched our most advanced multilingual model yet. This is what’s new.
·
3 min read
