Topical Map AI vs SERP Gap Analyzer (2026): which should you pick?

Pick Topical Map AI if

• Fits if you're starting a niche site and want a content plan built from one topic
• Works for someone who already pays OpenAI and wants maps without spending credits

Look elsewhere if

• Not for you if you want to try it first, since there's no free plan or trial
• Skip it if you already have a keyword list to cluster, as it can't import one
• Pricey if you need the API, team seats or white-label exports, which start at $179 a month
• Watch out: keywords are AI-made, and many long-tail ones have no reported volume, so the list needs review
• Too light for rank tracking or site audits, which it doesn't do at all

Pick SERP Gap Analyzer if

• Fits if your site is small and you want keywords where the current top 10 has weak pages
• Works for Semrush users choosing which slipping pages to update first

Look elsewhere if

• Pricey if you want lots of keywords, as $99 a month gets 10 reports of 6; Premium is $149 for 30
• Skip it if you don't use Semrush, since it's sold through its App Center
• Not for you if you need results fast, as each report can take up to 15 minutes
• Watch out: TopicRanker's own cards show tighter limits than Semrush's, such as 1 domain and 3 reports on Basic
• Watch out: a scanned domain can't be deleted, only archived, and there's no API on record

Topical Map AI

• There is no free plan or trial; a full refund is offered within 30 days if fewer than 10 credits were used.
• Keywords are generated by AI and checked against DataForSEO, so many have no volume and the list needs review.
• The REST API, team seats and white-label exports start at Enterprise, $179 a month.
• It does not track rankings, audit sites or import an existing keyword list.

SERP Gap Analyzer

• Sold through the Semrush App Center, so it needs a Semrush account; the maker's own site sends trial sign-ups there.
• Basic allows 10 analysis reports a month with 6 suggested keywords each; Premium raises that to 30 reports and 12 keywords for $50 more.
• Each report can take up to 15 minutes, and a scanned domain cannot be deleted, only archived.
• TopicRanker's own pricing cards show tighter limits than the Semrush listing, such as 1 domain and 3 reports a month on Basic.

Topical Map AI

Topical maps from one topic

Enter a niche and AI generates hundreds of keywords grouped into topic clusters, with subtopics you can edit before the map is built.

Search data where it exists

Each keyword is looked up in DataForSEO for volume and difficulty; the vendor says most long-tail keywords have no reported volume.

Content briefs

Generate a content brief for any cluster inside the map, at 0.25 credits each.

Exports and white-label PDFs

Export maps as CSV, Google Docs, Excel or PDF depending on plan; Enterprise and Agency can brand PDF reports for clients.

Bring your own OpenAI key

Connect an OpenAI API key to create maps at no credit cost, paying OpenAI directly instead.

20+ languages

Maps can be generated in more than 20 languages, including Spanish, French, German, Japanese and Arabic, for 25+ countries.

SERP Gap Analyzer

Weak-spot keyword reports

Enter a domain and seed topic, with a language and country, and get suggested keywords rated easy, medium or hard, with search volume and the weaknesses of pages ranking now.

Competitor page checks

Flags ranking pages with keyword words missing from the title, no update in 6+ months, load times over 3 seconds, under 1,000 words or poor readability.

Optimize Content with Search Console

Connect Google Search Console to find your pages in the top 20 over 90 days that are sinking, or get many impressions but few clicks, and see what to fix.

AI Search Grader

Tests generated prompts on ChatGPT, Claude, Gemini, DeepSeek, Mistral and Llama, ranks your brand against rivals and gives a 0 to 100 AI Search Score.

AI writing tools

GPT-4 tools write post title ideas, content briefs, meta descriptions and full first drafts with Article Genie, based on the analysis.

Seed topic suggestions

Crawls your site and uses language analysis to suggest seed topics it covers often; there is no limit on suggestions, but one query runs at a time.

Topical Map AI

• Basic$56

  per month for 25 credits, billed monthly

  About 25 maps a month (20 on annual billing), all 4 map types, CSV and Google Docs export. 1 credit is one standard map.

• Pro$104

  per month for 46 credits, billed monthly

  46 maps a month, 5 maps generated at once, and CSV, Excel and PDF export.

• Enterprise$179

  per month for 80 credits, billed monthly

  80 maps a month, 10 at once, all export formats, 3 team seats and the REST API at 100 requests a day.

• Agency$374

  per month for 139 credits, billed monthly

  139 maps a month, 20 at once, white-label exports, 5 team seats and the REST API at 200 requests a day.

• 1 Map$39

  one-time, for one map credit that never expires

  Buy maps without a plan or on top of one: 5 maps cost $149 and 20 maps $449.

SERP Gap Analyzer

• Basic$99

  per month

  3 domains, 6 suggested keywords per report, 10 analysis reports a month and 20 exports to XLS or PDF.

• Premium$149

  per month (Basic plus a $50 monthly upgrade)

  Unlimited domains, 12 suggested keywords per report, 30 analysis reports a month and unlimited exports.

Topical Map AI

• Annual discount

  Save 17% with annual billing

  Topical Map AI's pricing lists annual billing at 17% less than monthly; the Basic plan includes 20 maps a month on annual instead of 25.

SERP Gap Analyzer

No public discounts listed.