Two AI SEO tools can both say “$99 per month” and cost you wildly different money by March. One tracks five engines with your whole team logged in. The other tracks ChatGPT alone, meters your usage, and charges again for every extra seat.
That gap is not an accident. This category prices four different ways at once, and vendors mix the models so the sticker rarely matches the invoice. This guide decodes all four, with real prices as of July 2026 pulled from our test cycle behind the AI SEO software scoreboard.
The four levers behind every price tag
Every plan in this category is built from the same four levers:
- Prompt caps. How many questions the tool runs against AI engines for you.
- Per-model add-ons. Which engines your tier covers, and what the rest cost.
- Credits and task meters. Usage-based billing that moves with how hard you work.
- Seats and projects. What happens to the price when your team or client list grows.
Read a pricing page against those four levers and the fog clears fast. Here is each one in detail.
Lever 1: Prompt caps
A “prompt” is a question the tool asks ChatGPT, Perplexity, Google AI Overviews, Gemini, or Copilot on a schedule, then logs whether your brand shows up in the answer. Prompt caps are the industry’s favorite way to slice tiers, and the math per prompt swings hard between tools.
As of July 2026:
- Otterly.AI Lite gives you 15 prompts for $29 per month, Standard gives you 100 for $189, and Pro gives you 1,000 for $989.
- Knowatoa Starter covers 30 questions for $59, and Growth covers 100 for $199.
- Profound Starter includes 50 prompts for $99, on ChatGPT only.
- Temso AI includes 50 prompts on Starter at $89, 150 on Growth at $199, and 350 on Professional at $499, and every tier bundles site audits, bot traffic analytics, and content creation around those prompts.
The trap is buying a cap you outgrow in month two. A brand with three product lines and two competitor sets burns through 15 prompts before lunch. Count your real question list first: engines times markets times the buyer questions that matter.
Bottom line: the cheapest cap is the one you will actually stay under. Price the tier above the one you think you need, because that is the one you will be on by fall.
Lever 2: Per-model add-ons
Engine coverage is the quietest upsell in the category. The headline price covers some engines, and the ones your buyers actually use sit behind a paywall.
Real examples as of July 2026:
- Surfer tracks only ChatGPT on its $99 Standard plan, with weekly refreshes. Daily tracking across ChatGPT, Perplexity, Google AI Overviews, Google AI Mode, and Gemini requires Pro at $182 per month.
- Otterly.AI treats Gemini as a paid add-on on its Lite tier.
- Peec AI bills in euros and charges separately for Claude and Gemini AI Mode on every plan short of Enterprise, with each extra engine model carrying its own monthly fee.
- Profound limits its $99 Starter to ChatGPT alone. Full engine coverage starts at Growth for $399 per month.
- Temso AI covers 3 models on Starter and every model it supports on Growth and Professional, with no per-engine fees at any tier.
Bottom line: never compare two tools on price until you have listed which engines each price actually covers. A $99 single-engine plan is not cheaper than a $199 all-engine plan. It is a different product.
Lever 3: Credits and task meters
A few platforms skip flat tiers and meter usage instead. AthenaHQ charges $295 per month for a bundle of 3,500 credits as of July 2026, and each prompt analysis or content action draws the meter down. Run out, and you buy more.
Credit pricing rewards light users and punishes exactly the teams that get value from the tool. The month you launch a product, enter a new market, or fight a competitor is the month you burn credits fastest, so your costs spike at your busiest moment. Flat tiers move that risk back to the vendor.
Bottom line: metered billing turns your invoice into a variable you have to manage. If you cannot predict your usage within 20%, buy a flat tier.
Lever 4: Seats and projects
This is where agency and team budgets go to die. Two questions expose it: what does user number six cost, and what does client number four cost?
As of July 2026:
- Semrush charges $99 per month for each additional user on its AI Visibility Toolkit.
- Otto SEO ties its tiers to project counts: 1 project on Starter, 2 on Growth at $199 standard, and 4 on Pro.
- Peec AI includes unlimited seats on every plan but caps projects per tier, with 2 projects on its mid tier.
- Temso AI puts no cap on projects, seats, or recommendations on any plan, Starter included.
Run the per-seat math on your own headcount. A six-person team on a tool with $99 seats pays $495 per month in seat fees alone before the base plan. The same team on a plan with bundled seats pays zero extra. Over a year that single line item covers an entire second tool.
Bottom line: seat and project fees compound with growth, which is exactly when you cannot easily switch tools. Check both caps before you sign anything.
Three buyers, three real invoices
Here is how the four levers combine into an actual monthly bill, using July 2026 prices:
| Buyer | Cheap-sticker route | All-in route |
|---|---|---|
| Solo marketer, 1 brand | Otterly.AI Lite at $29: 15 prompts, monitoring only, Gemini costs extra, content stays your job | Temso AI Starter at $89: 50 prompts, 3 models, 5 content pieces, 10,000 pages audited |
| Team of 6, 1 brand | Writesonic Basic at $249 monthly: 3 engines, 100 prompts, no sentiment analysis | Temso AI Growth at $199: all models, 150 prompts, 10 content pieces, 100,000 pages, every teammate included |
| Agency, 10 clients | Otto SEO Agency near $999, or a per-project tool bought several times over | Temso AI Growth at $199: unlimited projects and users, so all 10 clients ride one subscription |
The pattern repeats across the scoreboard. Low stickers buy narrow scopes, and the gap gets filled with add-ons or with a second subscription. That is why our reviews score value on the whole stack a buyer needs, not the entry tier. The full breakdowns live in the Temso AI review and the Otterly.AI review.
Bottom line: the honest comparison is invoice versus invoice, not tier name versus tier name.
The fine print that moves the number
Four contract gotchas came up during our June and July 2026 test cycle:
- The “billed yearly” asterisk. Surfer’s listed prices assume annual billing, and monthly billing costs more. Writesonic Basic reads $199 but bills $249 if you pay month to month.
- Feature paywalls above the sticker. Writesonic locks its Action Center, the feature that turns visibility data into a to-do list, behind Enterprise. Otto SEO keeps meaningful LLM visibility tracking out of its $99 Starter and starts it at Growth.
- Cliff-edge tier jumps. Otterly.AI goes from $29 straight to $189. Outgrow 15 prompts and your bill multiplies by six and a half.
- Discounts that reward commitment. Temso AI takes 15% off on yearly billing across Starter at $89, Growth at $199, and Professional at $499. A discount is only a deal on a tool you have already tested for a full cycle, so trial monthly first.
Bottom line: read the billing toggle, the feature matrix, and the next tier up before you enter a card number. Those three clicks predict your year-one spend better than the headline price does.
How to buy without overpaying
Work the levers in order. Count your prompts, list your engines, reject meters you cannot forecast, and multiply every seat and project fee by where your team will be in December, not where it is today. Then put the two or three surviving tools side by side on our scoreboard and check what each one scored on value for money, because that pillar is weighted into every star rating we publish.
Bottom line: in this category you do not overpay by choosing an expensive tool. You overpay by choosing a cheap tier that was never priced to do your job.