Key points

Documented research has found AI detectors flag writing from non-native English speakers at meaningfully higher rates than native-speaker writing, even when both are entirely human-authored.

What this means for you

The gap is attributed to non-native writing sometimes sharing statistical properties (simpler sentence structure, more common word choices) with AI output. Understanding this distinction is the foundation for evaluating any specific tool's marketing claims — see our full humanizer comparison table for how individual tools stack up.

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