📌 Overview

If you have compared keyword volume data between Search Atlas and another tool like SEMrush or Ahrefs, you may have noticed that Search Atlas often reports significantly higher numbers — sometimes 3x to 5x higher for the same keyword. This is not an error. It reflects a fundamental difference in how each platform collects, blends, and presents search volume data.

📊 How Search Atlas Calculates Keyword Volume

Search Atlas uses a three-part blended data model to produce keyword volume estimates. This approach is designed to reflect current and near-future demand more accurately than traditional methods.

1. Google Search Console API signals — Real-time impression and click data pulled from Google's own infrastructure, giving Search Atlas direct access to what users are actually searching.
2. Proprietary clickstream data — Aggregated, anonymised behavioural data from millions of user sessions, used to validate and enrich raw API signals.
3. AI-powered demand forecasting — A machine-learning layer that detects seasonal trends, emerging topics, and momentum shifts, projecting forward-looking volume rather than reporting only historical averages.

The result is a volume figure that represents current and anticipated search demand, not just a snapshot of the past.

🔄 How Other Tools Like SEMrush Calculate Volume

Most competing platforms — including SEMrush — rely primarily on 12-month rolling historical averages derived from third-party clickstream panels. While this produces a stable, conservative figure, it has notable limitations:

• Trending or emerging keywords are significantly under-reported because recent spikes are smoothed out.
• Seasonal peaks are averaged out rather than reflected at their actual heights.
• Data is typically updated monthly or quarterly, creating a lag behind real-world search behaviour.

This methodological difference — not a data quality issue on either side — is the primary reason Search Atlas volumes appear higher, especially for trending, seasonal, or niche-specific keywords.

📐 Expected Discrepancy Ranges

The size of the gap between Search Atlas and other tools varies by keyword type. Use the ranges below as a general reference:

• Evergreen, high-volume keywords (e.g. "project management software"): typically 10–50% higher in Search Atlas.
• Seasonal or trend-driven keywords (e.g. "best gifts for Christmas 2025"): typically 2x–4x higher, as the AI forecasting layer captures anticipated peak demand.
• Emerging or rapidly growing keywords: potentially 4x–6x higher, because historical average tools have not yet accumulated enough data to reflect current momentum.
• Stable, long-tail keywords: differences are usually smaller, often within 10–30%.

Neither figure is "wrong." They answer different questions: SEMrush tells you what volume looked like over the past year on average; Search Atlas tells you what volume looks like right now and in the near term.

🗂️ Where to Find Keyword Volume Data in Search Atlas

You can access keyword volume across several tools in the platform:

• Keyword Magic — Left sidebar → Keywords → Keyword Magic. Use this to discover and filter keywords by volume, difficulty, and intent.
• Rank Tracker — Left sidebar → Keywords → Rank Tracker (Keyword Rank Tracker). Monitor tracked keyword positions alongside live volume data.
• Keyword Gap — Left sidebar → Site Metrics → Keyword Gap. Compare keyword opportunities between your domain and competitors.

💳 Pricing Plans, OTTO Add-Ons, and WordPress Integration

Search Atlas offers tiered subscription plans that include access to keyword data tools at different usage limits. All plans include core access to Keyword Magic, Rank Tracker, and Keyword Gap.

OTTO SEO: OTTO is Search Atlas's SEO automation engine, included in all Search Atlas plans, with the number of OTTO projects depending on the plan and additional OTTO sites available as a top-up. You can activate OTTO from the left sidebar under OTTO SEO → SEO Automation (URL: /seo-automation-v3). OTTO automates on-page optimisations, technical fixes, and content recommendations across one or more connected sites. Each OTTO activation is tied to a specific website, so managing multiple websites requires an OTTO activation per site — review your plan's included activations before connecting additional properties.

WordPress Plugin: The Search Atlas WordPress plugin connects your WordPress sites directly to the platform, enabling you to push content optimisations, monitor rankings, and sync site data without leaving your dashboard. To manage multiple WordPress sites, install the plugin on each site and connect each one individually through the Site Metrics section of your account. There is no limit on the number of WordPress sites you can connect, but OTTO automation for each site requires its own activation.

For a detailed breakdown of what each plan includes — such as keyword tracking limits, OTTO activations, and user seats — visit the Billing section inside the platform or review the pricing page on the Search Atlas website.

✅ Key Takeaways

• Search Atlas volumes are higher because they blend Google API data, clickstream signals, and AI forecasting — not because the data is inflated.
• SEMrush uses conservative 12-month historical averages, which is a different methodology, not a more accurate one.
• Expect discrepancies of 10% up to 5x depending on keyword type, with the largest gaps on trending and emerging keywords.
• Use Search Atlas volumes to prioritise content based on current and near-future opportunity, rather than past performance alone.

If you need further assistance, open the chat widget in the bottom-right corner of the platform and type human teammate to be connected with a member of our team.