What is the best SEO tool in the world?
Asked "What is the best SEO tool in the world?", ChatGPT, Copilot, Gemini, Google AI Mode and Perplexity named 25 distinct tools across 15 answers on September 7, 2026, and 15 of them in two or more answers, and all 5 engines agreed on Semrush, the only tool every engine named.
Measured acrossChatGPTCopilotGeminiGoogle AI ModePerplexity
15 of 25 names confirmed · named in 2 or more of 15 answers · asked September 7, 2026 · 5 engines
Semrush is probably the best single SEO tool in the world today, but Ahrefs is arguably better for backlink analysis and competitor research. The choice of the best SEO tool depends on specific needs such as keyword research, technical audits, content optimization, or local SEO.
- 1Semrushnamed in 14 of 15 answers
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- 2Ahrefsnamed in 14 of 15 answers
- 3Google Search Consolenamed in 13 of 15 answers
- 4Surfer SEOnamed in 8 of 15 answers
- 5Screaming Frog SEO Spidernamed in 6 of 15 answers
- 6SE Rankingnamed in 5 of 15 answers
- 7Clearscopenamed in 4 of 15 answers
- 8Moz Pronamed in 3 of 15 answers
- 9BrightLocalnamed in 3 of 15 answers
- 10Frasenamed in 3 of 15 answers
- 11Mangoolsnamed in 3 of 15 answers
- 12Screaming Frognamed in 2 of 15 answers
- 13Yoast SEO Premiumnamed in 2 of 15 answers
- 14NeuronWriternamed in 2 of 15 answers
- 15Whitesparknamed in 2 of 15 answers
- 16Surfernamed in 1 of 15 answersone answer
- 17SearchPilotnamed in 1 of 15 answersone answer
- 18SEOPronamed in 1 of 15 answersone answer
- 19Blazly SEOnamed in 1 of 15 answersone answer
- 20Conductornamed in 1 of 15 answersone answer
- 21Nightwatchnamed in 1 of 15 answersone answer
- 22Ubersuggestnamed in 1 of 15 answersone answer
- 23AccuRankernamed in 1 of 15 answersone answer
- 24Looker Studionamed in 1 of 15 answersone answer
- 25Screpynamed in 1 of 15 answersone answer
LOCKED
The full measurement
- The position each of the 5 engines gave all 25 names.
- How many of the 15 answers named each of them.
- 81 sampled observations behind this ranking, and where the engines disagree.
- Fan-out — the query each engine actually searched.
- Every citation, and the sources nobody cited.