Why do ChatGPT and Claude use so many em dashes?

AI models learn from formal written English where em dashes mark parenthetical thoughts. Training data overrepresents them, so models output 5-10x more em dashes than natural human writing. Em dashes, 'delve into', 'leverage', and 'robust' are among the strongest tells that text is AI-generated.

Em dashes (—) become hyphens ( - ). En dashes (–) become hyphens. 20+ AI tell-tale words are replaced: 'delve' → 'explore', 'leverage' → 'use', 'underscore' → 'emphasize', 'robust' → 'solid', 'seamless' → 'smooth', 'plethora' → 'lots', 'myriad' → 'many', and more. Smart quotes become straight quotes. Negative-parallel patterns like 'it's not just X, it's Y' get simplified to 'it's Y'.

Is my text sent to any server?

No. All processing runs locally in your browser using regular expressions. Your text never leaves your device.

Will it fool AI detectors?

It removes the most common tells but is not a full AI detector bypass. Detectors look at many signals including sentence rhythm, perplexity, and burstiness. For a full cleanup, run the output through the AI Output Cleaner as well, then edit for voice.

Remove Em Dashes

The em dash is AI's favorite punctuation mark. Paste any ChatGPT, Claude, or Gemini output and remove em dashes (—), en dashes (–), and replace 20+ AI vocabulary words like 'delve into', 'leverage', 'landscape', 'seamless', 'robust', and 'tapestry' with plain alternatives. Also fixes 'it's not just X, it's Y' patterns. Runs entirely in your browser. No uploads.

Replace em dashes (—) with

Splits into two sentences. Most natural for AI-style em dashes.

Also replace en dashes (–) with hyphenReplace AI vocab (delve, leverage, robust...)Fix "not just X, it's Y" patterns

Paste AI-generated text0 / 100,000

Clean output

em dashes replaced

en dashes replaced

AI phrases swapped

Frequently Asked Questions

Why do ChatGPT and Claude use so many em dashes?: AI models learn from formal written English where em dashes mark parenthetical thoughts. Training data overrepresents them, so models output 5-10x more em dashes than natural human writing. Em dashes, 'delve into', 'leverage', and 'robust' are among the strongest tells that text is AI-generated.
What gets changed?: Em dashes (—) become hyphens ( - ). En dashes (–) become hyphens. 20+ AI tell-tale words are replaced: 'delve' → 'explore', 'leverage' → 'use', 'underscore' → 'emphasize', 'robust' → 'solid', 'seamless' → 'smooth', 'plethora' → 'lots', 'myriad' → 'many', and more. Smart quotes become straight quotes. Negative-parallel patterns like 'it's not just X, it's Y' get simplified to 'it's Y'.
Is my text sent to any server?: No. All processing runs locally in your browser using regular expressions. Your text never leaves your device.
Will it fool AI detectors?: It removes the most common tells but is not a full AI detector bypass. Detectors look at many signals including sentence rhythm, perplexity, and burstiness. For a full cleanup, run the output through the AI Output Cleaner as well, then edit for voice.

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About Remove Em Dashes

Strip em dashes, en dashes, and AI tell-tale vocabulary (delve, leverage, robust, seamless) from ChatGPT and Claude output in one click. This tool runs entirely in your browser, so your content is not sent to a server. MarkdownMe provides free, fast, and reliable Markdown tools for developers, writers, and anyone who works with Markdown.