If you plan or commission content, you need evidence that helps you choose a useful subject and write a clear brief. OppAlerts publishes this page and sells one of the products on it, and appears under only one of the five sources of evidence below.
Every content research tool answers the same question, and each one answers it from different evidence. What you should write about looks very different depending on whether the tool is reading forum arguments, search demand, engagement data, or the AI answers your buyers are already receiving. Compare the sources, not the feature names.
Five sources of evidence, and what each is good for
What people ask each other in public. BuzzSumo's Question Analyzer searches customer questions across forum posts including Amazon, Reddit, Quora and Q&A sites. This is unfiltered language from buyers, including complaints and comparisons that never appear in search data. It suits products with active communities and returns little for subjects nobody discusses in public.
What performed. BuzzSumo's Content Analyzer searches content by topic, URL or domain and sorts by engagement, with Trending Feeds covering the past 24 hours. This tells you what has already succeeded, which is useful for format and angle and biased toward subjects that were already popular. Plans are $199, $299 and $499 a month billed yearly, with 1 and 5 users and 2 and 5 alerts, and unlimited searches shared across the account.
What people search for. Semrush and Frase build from search demand and the pages ranking for it. Frase starts at $39 a month billed yearly for 10 articles and 50 audit pages, and Semrush covers keyword research across its plans from $139. This is the most established evidence and the best understood, and it describes queries typed into a search box rather than questions asked of an assistant.
What AI answers already address. This is the newest source and the one most relevant to AI search visibility. Peec AI scores prompt volume from 1 to 5 and suggests prompts drawn from brand context and coverage gaps, classifying each as branded or non-branded and by intent. Profound's Prompt Volumes claims analysis of over 1.3 billion user conversations to show what people ask assistants. Both figures are vendor claims.
OppAlerts approaches the same source through Content FAQs, which collects questions from LLM FAQs, Search FAQs, Related Search Questions, Result Titles, News FAQs and Prospect FAQs. The value is in the mix: questions that assistants answer, questions that search results and related searches expose, and questions appearing in indexed news and prospect pages, in one report.
What your chosen sources published. A reader such as Feedly gives complete coverage of publications you selected. Its current plans could not be verified for this page, so check its own pricing.
Research that leads into writing, and research that does not
Several products continue past research into drafting. Frase researches and drafts, with Content Guard watching published pages for declining performance. Surfer Standard at $99 a month billed yearly creates or optimizes 360 documents. Clearscope Essentials at $129 a month includes 20 topic explorations and 20 drafts a month alongside 50 pages and 50 tracked prompts. Profound's Agents module generates briefs and full drafts and publishes approved ones to a CMS.
OppAlerts does not write anything. After research, use Content Optimizer to compare a draft with up to three selected categories, one from each taxonomy. It lists related phrases the draft does not contain and reads up to 8,192 bytes at a time.
So the choice between them is partly whether you want the tool to produce text or to check text your writers produced.
What surrounds the research in OppAlerts
Content FAQs uses a campaign that contains the business, its brands, its competitors and three buyer personas. The same definition provides context for a news, blog and podcast index searched by keyword or by meaning, a prospect index searched across opportunity types, and brand and competitor mention reports. It also supports tracking of ChatGPT, Gemini and Google AI Mode alongside Google and Bing positions.
The practical consequence is that a topic found in research can be checked against what AI answers currently say, and the resulting article can be measured against its intended category, without moving between products.
Which to shortlist
| Which evidence you want to write from | Shortlist |
|---|---|
| Questions people ask each other in public | BuzzSumo Question Analyzer |
| Content that already performed | BuzzSumo Content Analyzer |
| Search demand and ranking pages | Semrush or Frase |
| Questions AI answers already address | OppAlerts Content FAQs, Peec AI or Profound |
| Prompt demand scored and classified by intent | Peec AI |
| Everything from publications you chose | A reader such as Feedly |
| Research that produces a finished draft | Frase, Surfer, Clearscope or Profound |
| Checking a draft against its intended category | OppAlerts Content Optimizer |
| Research connected to placements and outreach | OppAlerts |
Most teams need two of these sources rather than one, and the cheapest useful pairing is usually search demand plus one source of real buyer language.
Use a real content assignment to compare the research sources. Choose the tool that helps you explain the reader's question and the article's intended contribution.
See Content FAQs, reviewing extracted questions for content planning, or AI search content optimization tools.