Semrush confirms significant operational impact as Google eliminates n=100 SERP parameter

Google discontinued its n=100 SERP parameter on September 14, 2025, fundamentally transforming how Semrush and other SEO platforms access search result data. Semrush confirmed the significant operational impact, acknowledging that this modification forces tools to execute 10 separate requests instead of a single request to retrieve 100 search results, multiplying operational costs by a factor of 10 for businesses dependent on comprehensive search result analysis.

Semrush publicly confirmed the industry-wide disruption in their official statement: "This is an industry-wide issue that impacts all rank tracking tools, but the good news is that we've already rolled out workarounds to minimize disruption and keep core functionality intact."

The company emphasized transparency regarding the challenge, stating: "We know your business relies on this data. Our goal is to be fully transparent as the situation evolves and to ensure that Semrush remains your most reliable source of search insights."

Late last week, Google quietly removed the ability to see 100 search results per page. For years, adding the "&num=100" parameter to a search URL would return the top 100 results on a single page. That option is now gone.

Semrush implements immediate operational adjustments

Semrush, along with rank tracking tools throughout the industry, traditionally relied on this parameter to efficiently capture organic results at scale. Without it, getting the full top 100 results now requires 10 times as many requests, making the process significantly more resource-intensive.

These adjustments represent interim solutions while Semrush develops longer-term approaches to the cost increase challenge. The company indicated that over the coming weeks, they will refine their approach and share updates as longer-term solutions are rolled out.

For Semrush users, the company clarified that the most actionable ranking data remains available. The top 10 results, where a majority of search traffic flows, maintain full reliability within Semrush systems. Top 20 results, positions just outside page one where growth opportunities often emerge, continue providing valuable strategic insights.

Beyond the top 20 rankings, which help diagnose issues like keyword cannibalization and spot early growth signs, still retain value but may experience visibility fluctuations while the industry adjusts to the parameter elimination.

In other words, the most actionable ranking data remains available, and while deeper ranges may be less stable in the short term, they should be seen as supplementary insights rather than critical decision-making signals.

Technical architecture overhaul impacts Semrush infrastructure

The n=100 parameter previously allowed Semrush and other research platforms to retrieve 100 search results through a single API call. This capability proved essential for comprehensive keyword research, competitor analysis, and large-scale search engine optimization strategies that Semrush delivers to its customer base.

With the parameter's removal, Semrush must now execute 10 separate requests to obtain identical data sets. This modification fundamentally alters cost structures for the platform and other SEO software providers.

Previously, retrieving comprehensive search result data required minimal API calls for Semrush's operations. The new architecture multiplies request volumes by a factor of 10, directly translating to proportional cost increases for companies processing millions of search queries monthly like Semrush.

According to Keyword Insights, one of the first SEO platforms to publicly acknowledge the impact: "Google has killed the n=100 SERP parameter. Instead of 1 request for 100 SERP results, it now takes 10 requests (10x the cost)." The announcement appeared at 7:45 AM on September 14, 2025, indicating the change took effect immediately.

SEO consultant Gagan Ghotra commented on the implications, noting that "Google trying to protect their search results from getting scraped." The statement suggests Google's motivation extends beyond technical optimization to include protecting its search infrastructure from automated data collection.

Marketing professionals face compounded operational pressures

The timing coincides with ongoing tensions between Google and SEO platforms over search result access. Data scraping concerns have intensified as AI-powered content generation becomes widespread, leading to questions about sustainable information access for legitimate business purposes that Semrush and similar platforms serve.

Marketing professionals have experienced significant operational cost increases across Google's advertising platforms throughout 2025. Google Ads costs rose 12.88% across all industries in the first quarter, with 87% of business sectors experiencing cost per click increases exceeding 40% in some cases.

The SERP parameter elimination compounds existing cost pressures on digital marketing tools like Semrush. The platform must now balance service quality with dramatically increased operational expenses while maintaining competitive pricing structures for its user base.

Many SEOs are also noticing issues in Google Search Console performance reports. Brodie Clark and others have reported unusual shifts, including sharp declines in desktop impressions and spikes in average position.

Semrush navigates broader industry restrictions

The SEO tools sector, including Semrush, has confronted mounting challenges throughout 2025 as Google implements various restrictions on data access. Google's API modernization efforts have streamlined developer workflows but simultaneously increased operational complexity for third-party platforms like Semrush.

Microsoft has reduced search API availability, announcing on June 9, 2025, that Bing Search APIs would be retired on August 11, 2025. Replacement services cost 40-483% more and require Azure integration, creating additional financial pressure on SEO tool providers like Semrush seeking alternative data sources.

Search result volatility has reached unprecedented levels in 2025. Google's June core update caused dramatic ranking changes across 16 days, while April volatility reached high levels with particularly intense fluctuations between April 21-23.

These algorithmic changes increase demand for comprehensive search monitoring tools like Semrush precisely when access costs have increased substantially. Marketing professionals require detailed analytics to distinguish between campaign performance issues and algorithmic impacts on organic visibility that Semrush typically provides.

Technical constraints limit Semrush workaround strategies

SEO platforms like Semrush exploring alternatives to the eliminated n=100 parameter face several technical constraints. Rate limiting prevents rapid sequential requests that might replicate bulk data collection capabilities. Google's infrastructure monitors request patterns to identify automated scraping attempts.

Distributed request strategies across multiple IP addresses or geographic regions may provide partial solutions for Semrush but introduce additional complexity and infrastructure costs. Such approaches require sophisticated load balancing and may still trigger Google's anti-scraping mechanisms.

API-based alternatives through Google's official channels exist but typically provide limited result sets compared to direct SERP scraping that Semrush previously utilized. The Google Search Console API offers performance data but lacks comprehensive competitor visibility that many Semrush features require.

Custom search solutions through Google's programmable search engine provide structured access but impose different limitations and cost structures. These alternatives may not support the specific data points that Semrush's analysis capabilities require for competitive intelligence delivery.

Cost impact assessment affects Semrush competitive positioning

The 10x cost increase affects different SEO tool categories disproportionately. Enterprise platforms like Semrush serving large clients may absorb increased operational expenses more effectively than smaller providers targeting individual users or small businesses.

Subscription pricing models across the SEO industry, including Semrush's offerings, may require restructuring to accommodate higher data acquisition costs. Tools that previously offered unlimited keyword tracking or comprehensive competitor analysis may implement usage-based pricing or result limitations.

Google's advertising cost increases have already pressured marketing budgets throughout 2025. The SERP parameter elimination adds another layer of expense for businesses dependent on search optimization tools like Semrush for competitive intelligence.

Marketing teams may reduce their SEO tool subscriptions or consolidate services to manage budget pressures. This consolidation could benefit established platforms like Semrush with comprehensive feature sets while challenging specialized point solutions.

Semrush leverages enterprise strength amid market pressures

The cost increase may accelerate market consolidation within the SEO tools sector, potentially benefiting established players like Semrush. Larger platforms with diverse revenue streams can better absorb operational cost increases compared to specialized providers focused solely on search result analysis.

Semrush's Q2 2025 results showed $108.9 million revenue with enterprise customers paying $50,000+ annually surging 83% year-over-year. This enterprise strength positions the company advantageously during industry cost pressures.

Alternative data sources become more attractive as Google's direct access costs increase. Social media monitoring, content discovery platforms, and industry-specific research tools may gain market share as businesses diversify their competitive intelligence approaches beyond traditional tools like Semrush.

AI search developments continue reshaping how users consume search information. Data from Semrush indicates AI Overviews appear on 13.14 percent of search results. With traditional search result monitoring facing additional relevance challenges beyond cost considerations, platforms like Semrush must adapt their service offerings.

SEO professionals must balance comprehensive data collection with cost constraints while adapting to AI-powered search features that reduce traditional organic click-through rates. Semrush's position as a comprehensive platform may prove advantageous in this evolving landscape.

Semrush confirms long-term strategy adaptation

The company's AI Toolkit became the fastest-growing product in company history, expanding from zero to $3 million in ARR within months of its late Q1 2025 launch. According to company statements, usage data shows customers who purchase AI Toolkit experience a 20% increase in their activity within Semrush's SEO Toolkit, demonstrating complementary product adoption.

"We believe we are approaching a time when every SEO expert will need to add AI Search capabilities," according to Semrush leadership during recent earnings discussions. The company introduced several AI-powered enhancements, including SearchGPT integration within Position Tracking tools and an AI Traffic dashboard enabling businesses to monitor brand visibility across platforms like ChatGPT, Copilot, Gemini, and Perplexity.

Impact on Semrush customer base and marketing community

This development matters significantly for the marketing community because it fundamentally changes the economics of competitive intelligence and search optimization that Semrush provides. According to PPC Land's coverage of search industry developments, the cost increase occurs during a period when marketing professionals already face budget pressures from Google Ads pricing increases and algorithmic volatility.

The parameter elimination forces marketing teams relying on Semrush and similar platforms to make difficult decisions about tool subscriptions and data quality. Comprehensive keyword tracking, which Semrush previously supported through extensive search result monitoring, now carries substantially higher operational costs that many smaller businesses cannot absorb.

For agencies and consultants using Semrush to serve multiple clients, the cost multiplication creates particular challenges. Services that previously included extensive search result monitoring through Semrush may require pricing adjustments or service limitations to maintain profitability while absorbing the 10x data collection cost increase.

The timing coincides with other significant changes affecting search marketing professionals. Recent algorithm updates have created increased demand for search monitoring precisely when access costs have multiplied, creating a challenging environment for data-driven optimization strategies that Semrush supports.

Semrush's acquisition of Search Engine Land in October 2024 positioned the company as both a tools provider and content authority in the SEO space. This strategic positioning may help Semrush navigate the current challenges by offering comprehensive education alongside traditional tool functionality.

Timeline

• April 17, 2025: Virginia federal court rules Google monopolized digital advertising markets
• April 21-23, 2025: Google search rankings show significant volatility affecting Semrush monitoring tools
• May 12, 2025: Microsoft announces Bing Search API retirement effective August 11, with replacement costing 40-483% more
• June 9, 2025: Microsoft retires Bing Search APIs, forcing migration to expensive Azure alternatives
• June 30, 2025: Google's June core update begins, causing dramatic ranking volatility
• July 10, 2025: Instagram content becomes searchable on Google
• August 6, 2025: Semrush posts 20% revenue growth as AI products accelerate adoption
• September 2, 2025: Judge Mehta delivers comprehensive antitrust ruling requiring Google to disclose ad auction changes
• September 14, 2025: Google eliminates n=100 SERP parameter, Semrush confirms significant operational impact
• October 16, 2024: Semrush acquires Search Engine Land and Third Door Media properties

Summary

Who: Google implemented the change while Semrush confirmed significant operational impact, affecting marketing professionals who rely on comprehensive search result analysis for competitive intelligence and optimization strategies through tools like Semrush.

What: Google eliminated the n=100 SERP parameter that previously allowed Semrush and competitors to make single API calls to retrieve 100 search results, now requiring 10 separate requests and multiplying operational costs by a factor of 10, which Semrush publicly acknowledged and addressed with immediate workarounds.

When: The change took effect on September 14, 2025, forcing Semrush to immediately implement operational adjustments and confirm the impact to maintain service functionality for its customer base.

Where: The modification affects global SEO tool operations including Semrush that depend on Google search result data, particularly impacting platforms that provide keyword research, competitor analysis, and comprehensive search monitoring services.

Why: The elimination appears designed to protect Google's search infrastructure from automated data scraping while forcing SEO platforms like Semrush to adopt more expensive data collection methods, potentially reducing competitive intelligence capabilities across the industry, which Semrush confirmed as requiring significant operational adaptations.