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NimbleSEO vs Semrush AI Visibility Toolkit

Semrush is better at suite familiarity and third-party discovery data: a 289M-prompt database and the classic Semrush toolset around it, with genuinely good data-source documentation. NimbleSEO differs on statistical honesty (intervals + inconclusive instead of a 0–100 score alone), per-engine capture disclosure, and a lower-entry one-bill SEO+GEO plan.

All comparisonsHow to read vendor claims

Competitor facts verified 2026-07-10 against Semrush AI Visibility Toolkit’s own public pages (linked per row) — tell us if something changed: security@nimble-seo.com. Units are defined per vendor and never silently equated.

DimensionNimbleSEOSemrush AI Visibility ToolkitStronger
Discovery data at market scalePrompt discovery from your own first-party sources plus expansion; no 289M-prompt third-party database.
evidence: src/lib/marketing/methodology-copy.ts + /methodology/ai-visibility
"Over 289 million prompts and responses" across ChatGPT/Gemini/AIO/AI Mode, updated daily, 40+ regional databases — documented in their KB.
source1 · checked 2026-07-10
Them
Uncertainty disclosureWilson intervals + effective sample size + calibration backtest + inconclusive labels on every visibility estimate.
evidence: src/lib/marketing/methodology-copy.ts + /methodology/ai-visibility
AI Visibility is a 0–100 benchmark score; the metrics KB documents what each metric measures but discloses no sample sizes or confidence intervals as of the checked date.
source2 · checked 2026-07-10
NimbleSEO
Capture-fidelity disclosureEvery engine’s capture mode published and registry-bound (/capture).
evidence: src/lib/geo/engines/index.ts (engineCaptureDisclosures) + /capture
Engine list (ChatGPT, Google AI, Gemini, Perplexity) with data-source docs, but no per-engine capture-method (API vs grounded vs UI) disclosure on the checked pages.
source3 · checked 2026-07-10
NimbleSEO
Pricing shapeFrom $19/mo including the SEO lane; every meter and overage price published on one page.
evidence: src/lib/pricing.ts + /pricing (published limits & overage)
AI Toolkit $99/month per domain billed annually with 25 daily custom prompts; extra users/reports/lead-gen are priced add-ons.
source4 · checked 2026-07-10
NimbleSEO
Data-source documentationMethodology + capture pages document sampling and capture modes; smaller doc surface than theirs today.
evidence: src/lib/marketing/methodology-copy.ts + /methodology/ai-visibility
Dedicated KB pages document each database, update cadence, and metric definitions — among the better-documented tools in the category.
source5 · checked 2026-07-10
Tie
Footnotes
  1. https://www.semrush.com/kb/1607-semrush-ai-visibility-data (checked 2026-07-10)
  2. https://www.semrush.com/kb/1594-ai-seo-metrics (checked 2026-07-10)
  3. https://www.semrush.com/pricing/ai/ (checked 2026-07-10)
  4. https://www.semrush.com/pricing/ai/ (checked 2026-07-10)
  5. https://www.semrush.com/kb/1607-semrush-ai-visibility-data (checked 2026-07-10)