/threads-humanizer

name: threads-humanizer
description: "Remove the AI tells human readers react to in a Threads post or thread: 2026 vocabulary by density, reveal bridges, staccato stacks, stacked triads, performed sincerity; caps em dashes at one per post, never forces rhythm. Includes --mode audit (500-char fit, hook, one-hashtag cap, link placement, warm tone) and --mode profile. Not for beating AI detectors (no edit reliably does). Not for writing from scratch (use threads-post-writer). Keywords: humanize, de-AI Threads post, audit before posting."

Threads Humanizer V3

Rewrites any Threads post or thread to remove the AI tells that human readers notice, and audits a finished draft against the 2026 Threads ranking checklist. Based on Wikipedia's "Signs of AI writing" taxonomy, the 2025-2026 stylometry literature, our own length-controlled Threads corpus (n=311), and Threads-specific patterns (the warm conversational register, the no-fold first line, the one-hashtag cap, repost-bait structure). **V3 (2026-09):** recalibrated on 2026 evidence. Vocabulary is scored by density, em dashes are capped instead of banned, forced rhythm is now a tell instead of a fix, and there is an over-correction guard.

**What this skill does not do:** it does not make text "pass" GPTZero, Pangram, Turnitin or Originality. Those are trained classifiers keyed on the instruction-tuning style signature; prompt-style "sound like a real person" rewrites are caught 92-95% of the time, and light mechanical rewriting raises detectability. On post-length text (under 300 words) detector scores are noise. The real value is elsewhere: expert human readers cite vocabulary (53%) and sentence structure (36%) as what gives AI text away, and Threads readers answer it with silence in a feed that ranks on replies. This skill removes what those readers react to.

What changed in V3

Evidence tier in brackets: [strong] = replicated across 2+ independent 2025-2026 studies or our own length-controlled corpus; [vendor] = single platform or vendor dataset; [weak] = one study or expert-panel report.

• **Vocabulary moved from a delete-list to density scoring.** The 2023-24 words

(delve, tapestry, realm, journey) are decaying as humans avoid them [strong]. The durable 2026 markers are common words (significant, crucial, notably, comprehensive, insights, robust, leverage, foster, landscape, nuanced, streamline, elevate) plus grammar: nominalisations and "-ing" clause openers at 5.3x the human rate [strong]. In our Threads corpus AI vocabulary is nearly absent from top posts (1.3%) [strong], which is the point: it reads as a brand account in a feed built on people talking. One marker in a post is not a verdict. Three is.

• **Em dash is no longer a tell; the density is.** GPT-5.4 emits 1.43 per

1,000 words, below the 3.23 human baseline [strong]. On Threads specifically em dashes are rare in top posts (7%) and those posts earn 0.33x the median engagement [strong: corpus], so the cap here is tight: **at most one per post**, and none in a post that reads fine without one. Replace the excess with a comma, a colon, `..`, or a rewrite. Never a period (a split dash stacks fragments).

• **Forced burstiness is the #1 2026 tell, not the fix.** Mechanical

long/short alternation is a learnable humanizer fingerprint [weak], and on Threads **uniform rhythm wins at every length**: sentence-length variance correlates negatively with engagement across the whole corpus (Spearman -0.31), with uniform rhythm ahead in the short, mid and long terciles [strong: corpus, length-controlled]. So Pass 2 never forces variance, on a single post or a thread. It only removes manufactured variance. "Short. Punchy. Done.", "No X. No Y. Just Z.", one-word posts for drama and "The result?" reveals are the current top tells.

• **Rule of three is still a tell, at density.** Tricolon runs at 2x

expert-human rate across 2026 frontier models [strong], and on Threads it is rare in top posts (8%) and engagement-negative (0.28x) [strong: corpus]. Stacked or perfectly parallel triads and any second triad in a post get scrubbed. One natural triple with concrete items stays.

• **Fingerprint injection was half wrong.** Named entities and concreteness are

supported [strong]; an odd-precision number with a referent in line 1 is the strongest opener. Bare numbers are not a discriminator, and inserted hedges and confessions backfire: performed hesitancy is 2x more common in LLM text, and sincerity announcements ("let me be honest", "unpopular opinion:" on a popular take) are a named 2026 tell [strong]. Pass 3 asks for a flat, dated, uncomfortable fact instead, stated in the warm register Threads rewards.

• **Over-correction guard.** Humanizer output has its own fingerprint [weak].

Pass 4 checks whether Passes 1-3 introduced the very patterns they were meant to remove. Edits are proportional to real problems. When in doubt, leave it.

When to use

• Before publishing any AI-drafted post or thread (rewrite mode)
• Pre-publish review of a finished draft (audit mode, see `sub-skills/post-audit.md`)
• When a draft feels off and you cannot pinpoint why

Input

Any text: a single post, a thread (with or without `---` breaks), a reply, or a quote-post draft. Optional: target voice samples (the user's past posts).

Output

• Rewritten text with AI tells removed
• A diff showing what changed and why
• Per-post char count (flagging anything over 500)
• Per-post tell density (markers per post; 3+ triggered a rewrite)
• Reader-read confidence: "reads human", "mixed", "reads AI" (a reader-tell

estimate, not a detector score)

Modes

# Default: scrub AI tells (forensic + strict) and fix Threads-format issues
threads-humanizer <text>

# Forensic only - minimum touch, just kill model leakage
threads-humanizer --mode forensic <text>

# Audit - detection-only pass-fail review, no rewrite
# Runs the 2026 Threads checklis