OperStackOperStack next to content optimisation tools: Surfer, Clearscope, MarketMuse and Frase
Surfer, Clearscope, MarketMuse and Frase help writers score and draft content against what already ranks. OperStack starts from the other end: it asks ChatGPT and Perplexity a buyer's questions every week, shows whether you are named and who is named instead, and writes the fix for your own pages. Each tool below has its own section with prices, the date we checked them, and when it is the better pick.
OperStack is our product. Each section keeps the prices with the supplier page and the date we checked it.
OperStack vs Surfer
OperStack suits an owner who wants the weekly ChatGPT and Perplexity answers, the rivals they named and one paragraph built from the site's own facts, for $35 a month. Surfer is a content platform; on 27 September 2026 its cheapest plan with AI tracking, AI Search Analytics, cost $95 a month. OperStack's free check reads 10 pages and shows the answer on screen, no email needed.
What Surfer is built for: Marketing managers, agencies, SEO specialists, content managers and writers, ecommerce and PR teamssource
Prices, checked 27 September 2026
- Price per month: On 27 September 2026: AI Search Analytics $95; Discovery $59 has no AI tracking; Standard $119source
- Price per year: AI Search Analytics $82 a month billed yearly, $984 a year by our multiplicationsource
- Free trial and whether a card is needed: 7 days of the Pro plan; billing details at checkout; converts to your chosen plan and does not cancel itselfsource
When Surfer is the better choice
- Your team writes articles every week and wants an editor that scores drafts against ranking pages.
- You plan topic clusters and need content ideas, coverage gaps and internal linking in one tool.
When OperStack fits better
- You want the ChatGPT and Perplexity answers for $35 a month: ten buyer questions weekly and the names given instead of you.
- You want page text that says only what your site already says, each sentence checked against your own pages.
- You want one email a week with what changed, the page to edit and the paragraph, and no editor to learn.
- You want to see the result now, on screen, without an account, a card or an email address.
Surfer: surferseo.com. Prices may change after the date above.
OperStack vs Clearscope
OperStack reads up to 10 pages of your site for free, lists the businesses ChatGPT recommends instead of you and drafts the opening paragraph a page is missing, using only facts from your own site. Watch repeats that every week in ChatGPT and Perplexity for $35 a month. Clearscope's cheapest plan with AI mention tracking, Essentials, cost $129 a month on 27 September 2026 and centres on grading and drafting content for search.
What Clearscope is built for: "From solo creators to global content teams"; Localize is aimed at multi-location and franchise businessessource
Prices, checked 27 September 2026
- Price per month: Essentials $129 a month, the cheapest plan, with AI mention tracking included; Business $399 a monthsource
- Price per year: No yearly price or annual discount shown for Essentials or Business; a yearly custom Enterprise plan can be invoicedsource
- Free trial and whether a card is needed: 14-day free trial; the signup form asks for name, email and password with no card field. Whether a card is asked for later is not stated.source
When Clearscope is the better choice
- Your writers need content grades and term suggestions inside Google Docs, WordPress or Word
- You need keyword research and topic planning to fill a content calendar
- You run a multi-location or franchise brand and want local content recommendations
When OperStack fits better
- You want to see, free and with no account, which businesses ChatGPT recommends when a buyer asks about your kind of business
- You want the missing opening paragraph for pages you already have, drafted only from facts on your own site
- You want one letter a week on the same ten questions in ChatGPT and Perplexity for $35 a month, where Clearscope's cheapest plan with AI tracking is $129
- You have no developer or content team, and you want each fix as text you can paste
Clearscope: clearscope.io. Prices may change after the date above.
OperStack vs MarketMuse
OperStack Watch asks ChatGPT and Perplexity 10 buyer questions every week, lists the businesses they recommend in your place, rereads 10 of your pages and supplies the opening paragraph to paste, for $35 a month. MarketMuse plans topics, builds briefs for writers and grades drafts against Google results. On 27 September 2026 its pages described no AI-answer tracking and showed no price for any paid plan. Keep MarketMuse for editorial planning.
What MarketMuse is built for: Brands, publishers and agencies; day-to-day users are SEOs, content strategists, editors and writerssource
Prices, checked 27 September 2026
- Price per month: On 27 September 2026: Free $0 with 10 queries a month. Optimize, Research and Strategy: no public price, each plan card says "Book a demo".source
- Price per year: No public yearly price and no annual discount shown for any paid plansource
- Free trial and whether a card is needed: A "Start my free trial" button opens a sign-up app with no readable text; trial length and card requirement could not be confirmedsource
When MarketMuse is the better choice
- You plan dozens of articles a quarter and want topic clusters with traffic estimates per page
- Your writers work from structured briefs in formats such as how-to, comparison or product review
- You want drafts graded against the top 20 Google results for a topic
When OperStack fits better
- You want to learn each week whether ChatGPT and Perplexity name your business for ten buyer questions, and which firms they name when they skip you
- You want finished wording for pages you already run: the page address plus an opening paragraph assembled from facts your own site states
- You want a price you can read before any call: $35 a month or $299 a year, first 7 days free
- You want to try it on your site today: ten pages scored and three live ChatGPT questions, no signup
MarketMuse: marketmuse.com. Prices may change after the date above.
OperStack vs Frase
OperStack fixes the pages you already publish, for $35 a month: it reads 10 of them, shows who ChatGPT and Perplexity recommend instead of you and writes each missing opening paragraph only from your own facts. The free check needs no signup. Frase Starter cost $49 a month on 2 October 2026; Frase audits your pages and drafts fixes too, ranked by impact, alongside drafting new articles.
What Frase is built for: Starter for solos, freelancers and single-site teams; Professional for in-house teams; Scale for agencies and multi-site brandssource
Prices, checked 2 October 2026
- Price per month: Starter $49 a month, the cheapest plan, with AI visibility included; Professional $129; Scale $299; Enterprise customsource
- Price per year: "Save 20%" billed yearly: Starter $39 a month ($468 a year, our arithmetic), Professional $103, Scale $239source
- Free trial and whether a card is needed: 7-day trial with no credit card, running Professional features capped at 5 articles, 50 audit pages, 25 AI prompts and 3 seatssource
When Frase is the better choice
- You need briefs and finished drafts for new articles every month, published straight to your CMS
- You want backlink prospecting with drafted outreach emails, or content written in 70+ languages
When OperStack fits better
- You want each fix tied to a buyer question where ChatGPT named a rival instead of you, with the paragraph drafted only from facts on your site
- You want the names ChatGPT recommends in your place from a free check that needs no signup, then ChatGPT and Perplexity every week
- You want one plain letter a week on ten fixed questions in ChatGPT and Perplexity for $35 a month, with fixes a non-developer can paste
Frase: frase.io. Prices may change after the date above.
See it on your own site first
The free check reads ten pages, scores them out of 100 and asks ChatGPT three questions a buyer would ask. No signup.