Contadu vs Semji (2026): which should you pick?
As of Oct 24, 2026, we pick Contadu: it is third in our ranking of SEO content tools, and they share a 2.4 GPA.
Checked Oct 23, 2026 · graded Oct 23, 2026 by ToolGPA
They get the same grade on all five counts.
Price, platforms and features side by side. The table says where each price was read and when.
Contadu
Content planning and NLP-based SEO editor for teams and agencies
Which one is for you
Pick Contadu if
- Fits if you run an agency planning and scoring content for several client sites
- Works for writers working in languages other than English
Look elsewhere if
- Not for you if you want a free plan, as there's only a 7-day trial
- Tight if you run more than 5 sites, since Freelance stops at 5 projects
- Skip it if you need extended API access or your own CMS in the editor, which wait on Enterprise at $293 a month
- Watch out: the same company sells NeuronWriter, which covers much of the same ground
Pick Semji if
- Fits if you're a large marketing team running content in several markets
- Works for brands that want briefs, drafts and publishing in one workflow
Look elsewhere if
- Skip it if you want a price up front, as Semji quotes only after a demo
- Watch out: there's a free sign-up, but nothing says what it includes or for how long
- Too light for teams that need technical SEO or link building, which Semji sells as separate managed services
How we grade them
| 2.4GPAContaduFair | 2.4GPASemjiFair | |
|---|---|---|
| Value for money | CFreelance is $37 a month billed yearly ($47 monthly), between this category's cheaper quarter ($20) and its middle ($45), with unlimited team members. Business, with 10 projects, is $77. | CNo price is published. Semji quotes by workspaces, markets and AI usage after a demo, so the price is only given on a sales call. Seats are part of the quote rather than charged per head. |
| Free plan and trial | CNo free plan, but a 7-day trial once you make an account, and the listing doesn't say it needs a card. Refunds cover the first plan bought, within 30 days. | CNo free plan on record. The pricing page links a free sign-up, but doesn't say what it includes or for how long. |
| Features | BA strategy planner with topical maps and clusters, an editor with NLP terms and entities, AI writing, plagiarism checks, internal links, tasks and reports. The whole job, though own-CMS editor integration and extended API access need Enterprise. | BAI visibility on six answer engines, Google opportunity data, agents that prepare briefs and drafts, a Content Score editor, brand voice training and publishing to six CMSs with traffic and revenue per page. The content job, without technical SEO or link building. |
| Ease of use | CNo rating on record. Strategies, writer analyses, AI words and projects each have their own monthly cap to keep track of. | CNo rating on record. Brand voice, a knowledge base and CMS publishing all take setting up first. |
| Platforms and integrations | BWeb plus a Chrome extension for Google Docs, WordPress and Shopify editors, with Search Console, Zapier, OpenAI and Anthropic. Extended API access needs Enterprise. No desktop or phone app. | BWeb, publishing to WordPress, Drupal, Magento, Shopify, Contentful and Strapi, with Search Console, Analytics 4 and Claude. No desktop or phone app. |
| Best for | content plans and NLP scoring for agencies | large teams running SEO and GEO content |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: Contadu and Semji. How we grade
Where they differ
- Contadu also covers keyword research and internal linking.
- Semji also covers AI agents and AI search visibility.
At a glance
| Contadu | Semji | |
|---|---|---|
| Pricing | Free trial | Paid |
| Starts at | $37 per month, billed annually ($47 billed monthly) | Not published |
| Free plan | None | None |
| Free trial | 7-day free trial after creating an account | None listed |
| Web | ||
| Browser extension | ||
| Made by | Conti sp. z o.o. | SEMJI SAS |
| Price read from | contadu.com | Not confirmed |
| Checked | Oct 23, 2026 | Oct 23, 2026 |
Worth knowing
Contadu
- There is no free plan, only a 7-day trial; a refund can be requested within 30 days for the first plan bought.
- Each plan caps content strategies, content writer analyses, AI words and projects; Freelance stops at 5 projects.
- Editor integration with your own CMS and extended API access come only with Enterprise.
- The company also sells NeuronWriter, which covers much of the same ground.
Semji
- No prices are published; Semji quotes by workspaces, markets and AI usage after a demo, with seats included rather than charged per head.
- The platform does not do technical SEO or link building; Semji sells those as managed services.
- The pricing page links a free sign-up, but it does not state what the free access includes or for how long.
- Semji says it is SOC 2 Type II audited and hosts customer data on AWS in the EU.
Key features
Contadu
- Content strategy planner
- Builds a content plan from competitor analysis, with topical maps, keyword clusters, keyword details and coverage gaps against rival sites.
- NLP terms and entities
- The Content Writer editor suggests terms drawn from the top Google results and the people, places and events they mention, with entities in 19 languages.
- AI writing and Content Designer
- Generates articles and outlines enriched with NLP terms, from built-in or custom templates; your own OpenAI or Anthropic key lifts the plan's word limit.
- Plagiarism and internal links
- The editor checks text for plagiarism, within a monthly allowance, and suggests internal links between related pages.
- Tasks and reporting
- Assign content tasks with due dates to colleagues or outside writers, and produce reports on content quality, competition and progress.
- Chrome extension and WordPress
- The extension brings recommendations into Google Docs, WordPress and Shopify editors, and the WordPress integration imports and exports posts.
Semji
- AI visibility tracking
- The Intelligence Hub reports mention rate, citation rate and average position on ChatGPT, Google AI Overviews, Gemini, Perplexity, Claude and DeepSeek.
- SEO opportunities
- Data Explorer sets your Google position, a competitor's and the focus keyword side by side, and sends a chosen topic to Planning.
- AI agents and briefs
- Agents such as GEO Expert and Content Master prepare briefs and drafts; every proposed change is reviewed before it is applied.
- Content Score editor
- A score that rises as the draft meets SEO, readability and brand rules, so a team can agree when a page is ready.
- Brand Voice and Knowledge Base
- Train the AI on a style guide and your own pages, and store product facts and rules for the agents to read before they write.
- CMS Publisher and measurement
- Sends drafts to WordPress, Drupal, Magento, Shopify, Contentful or Strapi, then reports traffic, conversions and revenue per page.
Plans
Contadu
Freelance$37
per month, billed annually ($47 billed monthly)
5 content strategies, 50 content writer analyses, up to 150,000 AI words, 5 projects, 100 plagiarism checks and 1,000 backlink checks.
Business$77
per month, billed annually ($97 billed monthly)
10 content strategies, 100 content writer analyses, up to 300,000 AI words, 10 projects, 200 plagiarism checks and 10,000 backlink checks.
Agency$149
per month, billed annually ($187 billed monthly)
25 content strategies, 250 content writer analyses, up to 500,000 AI words, 25 projects and 500 plagiarism checks.
Enterprise$293
per month, billed annually ($367 billed monthly)
50 content strategies, 500 content writer analyses, up to 750,000 AI words, 50 projects, editor integration with your own CMS, extended API access and onboarding.
Semji
Pricing could not be confirmed. See semji.com.
Ways to pay less
Contadu
- Annual discount
Save 20% with yearly billing
Contadu's pricing page lists yearly billing at 20% off: Freelance is $37 a month billed yearly instead of $47 billed monthly.
Semji
No public discounts listed.
Common questions
Which is cheaper, Contadu or Semji?
As of Oct 23, 2026, Contadu starts at $37 per month, billed annually ($47 billed monthly), and Semji has no price we could confirm.
Which has a free plan, Contadu or Semji?
As of Oct 23, 2026, neither Contadu nor Semji has a free plan. Contadu has a free trial.
Which platforms do Contadu and Semji run on?
As of Oct 23, 2026, only Contadu lists a browser extension. Both list a web app. A platform missing from a listing is one its maker's pages did not mention.
More comparisons
How this page was made
- The verdict at the top follows a fixed rule. When both tools are in the same category and either is in our top three for it, the verdict follows that ranking: the higher-placed tool is our pick. The top three weigh who each tool suits as well as its grades, so a pick can go against the GPA. Otherwise the page does not pick one and says which grades higher: the higher GPA first; on a tie, the one with a free plan, then the one that starts cheaper in dollars a month, counted the same way for both; if they are still level, what the choice depends on.
- The grades are our own, from each tool’s review or report card. The GPA is their average.
- Prices, plans and platforms come from each tool’s listing. The table above says where each price was read and when.
- The differences and the answers to the questions are worked out from those listings.