Surfer SEO vs SemChat: two jobs, writing and diagnosing

How we work: SemChat is the only one of the two we tested on a real account (an audit run on 29 October 2026), and its buttons on this page are affiliate links. We have no affiliate link with Surfer. Surfer is described from its official pages and help center, read on 29 October and 30, 2026.

Surfer SEO vs SemChat: the verdict in three lines

• You write a lot of content: Surfer. Its editor scores each paragraph as you type, and its AI drafts articles.
• You first need to know what is wrong with your site: SemChat. One sentence starts a technical audit, a backlink check and a competitor review.
• You want to start without a credit card: SemChat’s Free plan, knowing that a single full audit used up its monthly quota in our test.

Two different jobs: writing pages or diagnosing your site

These two tools are often listed side by side, but they solve different problems. Surfer says so itself on the page it keeps for AI assistants: it is “Not a chatbot or a general-purpose AI assistant” (AI Instructions, read on 30 October 2026). The same page adds that it is not a backlink index or a technical-SEO crawler. Surfer picked its job and sticks to it.

Surfer: a content editor with a real-time score

Surfer’s Content Editor is the heart of the product. You enter a keyword. Surfer reads the pages in Google’s top 10 for your country and the pages AI tools cite most. It turns them into an outline, terms and topics to cover. Then it grades your draft live with a Content Score, which mixes SEO signals and your chances of being cited by AI. Write a paragraph, watch the score move.

SemChat: a site diagnosis you get by asking

SemChat starts from your site, not from a blank page. On 29 October 2026, we typed one sentence asking for an SEO audit of plugkit-avis.com and a clear action plan by priority. In about 3 minutes, SemChat read the pages, ran a full crawl, checked positions, the backlink profile and ten competitors. Then it returned three actions: create a contact page that returned a 404 error, make the titles of each language version different, and expand a thin comparison page.

Or use both: diagnose with SemChat, write with Surfer

The two tools can follow each other. SemChat tells you which pages to fix, which keywords to aim for and where competitors beat you. Then you write or rewrite those pages in Surfer’s Content Editor, with a score to guide you. For a small site, SemChat alone may be enough. For a team that publishes every week, the pair makes sense.

Surfer and SemChat side by side, as of 29 October 2026

Each cell comes from Surfer’s official pages or from SemChat’s pricing page and our test. When a page says nothing, we write “not mentioned”, never “not offered”.

A word on SemChat’s data, since you are probably not in France. SemChat relies on Haloscan data for France; Haloscan and SemChat share a publisher. Outside France, it uses a mix of keyword data providers it doesn’t name (e-mail from Haloscan, 29 October 2026). So the numbers behind your American keywords don’t come from Haloscan.

Technical audit and backlinks: outside Surfer’s scope

Surfer’s AI Instructions page is clear: “Not a backlink index, technical-SEO crawler, or Core Web Vitals tool.” Its Content Audit reads your Search Console to track the positions and traffic of your pages, which is useful, but it doesn’t crawl your site for errors. Surfer’s 2019 Regulations still list “Backlink” among its core features; the newer page says otherwise.

SemChat’s audit covered exactly that ground: crawl, backlink profile, competitors and the gap with five of them.

Keyword research and domain analysis in Surfer and SemChat

Surfer’s Keyword Research comes with the Standard plan: clusters, search intent and 12 months of volumes “from Surfer’s trusted data partners”. Discovery doesn’t include it. Its free Keyword Surfer extension shows volumes inside Google results. SemChat includes keyword research and domain analysis in every plan, Free included. One caution from our tests: SemChat’s search volumes often differ from other sources, so check a number before you build a page on it.

Chatting with each tool: Surfy for your text, SemChat for your whole site

Surfy lives inside Surfer’s Content Editor. You select a passage and ask it, in natural language, to rephrase, shorten or add an example. “Surfy Agent”, which would build strategies and reports on request, is announced as “(soon)” with no date. To drive all of Surfer by chat today, you go through Claude or ChatGPT and Surfer’s MCP server.

Brand visibility in AI search: Surfer’s AI Tracker, SemChat’s plans

This is a clear Surfer win. Its AI Tracker checks your brand every day in ChatGPT, Gemini, Perplexity, Google AI Mode and AI Overviews, with cited sources, sentiment and the gap with competitors. It collects answers from the apps themselves, not from APIs. The Standard plan only tracks ChatGPT, weekly. SemChat promises nothing on this today: AI visibility tracking is announced as planned.

Surfer vs SemChat pricing

Read from France, Surfer’s English pricing page shows euros, before VAT: Discovery at €59 a month (€49 billed yearly), AI Search Analytics at €95, Standard at €119, Pro at €219, Peace of Mind at €359, and Enterprise on quote. Data missing: the dollar prices a US visitor sees (planned source: the pricing page read from the United States). Every plan is detailed on our Surfer SEO price page.

The subscription trap: a trial that does not cancel itself, and erased data

Each “Start for Free” button opens a 7-day trial of the Pro plan. You enter your card at checkout. Surfer’s help center warns: “The trial does not cancel automatically.” After 7 days, the plan you picked starts and your card is charged.

When a subscription ends, another help article says: “All your previously created Content Editors, Audits, tracked Sites, and all other work are completely erased.” Surfer’s Regulations, on the other hand, keep access to the last three months of results. The two official pages disagree, so export what you want to keep before you stop.

SemChat’s Free plan and the promo code

SemChat’s pricing page reads: “Every feature, in every plan. Just pick your monthly usage.” The Free plan costs €0: “Try semchat with no credit card”. Starter is €20 a month, Pro 5x €100, Pro 20x €200. The €20 became €24 with French VAT on our first invoice, so these prices are before tax too. The catch: our single full audit used 100% of the Free plan’s monthly quota. All plans are on our SemChat pricing page.

Sign up through our link and subscribe within 2 weeks: 10% off for life (e-mail from Haloscan, 29 October 2026). The conditions are on our SemChat promo code page.

How to test Surfer and SemChat before you pay

Surfer: at checkout, pick the plan you would accept to pay if you forget to cancel. Put the 7th day in your calendar. Cancelling during the trial expires the account and you lose access to what you created, so export first.

SemChat: open a Free account and run your audit on your most important site. That single audit may use up the month’s quota: in our test, the counter showed 100% until its reset on 28 November.

Sources: the Surfer and SemChat pages we read

Surfer is described from its fact sheet of 29 October 2026, built from its own official pages, and from English pages re-read on 30 October 2026. SemChat is described from its pricing page and our real test on plugkit-avis.com. Prices change: check them before you subscribe.

For other tools, read our Surfer SEO alternative guide, and our SemChat review for the full test. Still torn on Surfer SEO vs SemChat? Ask yourself one question: do you need to write better, or to know first what to fix?