Semrush

What is Semrush?

Semrush is a digital marketing platform built around a core database of 28 billion keywords, 43 trillion backlinks, and traffic data for 808 million domains across 142 geographic markets. It started as an SEO and competitive research tool and has expanded to cover paid advertising analysis, content optimization, social media scheduling, and local business management.

The platform’s most recent addition is the AI Visibility toolkit, which tracks how brands and topics appear in answers generated by large language models including ChatGPT, Gemini, and Perplexity. It monitors over 261 million prompts and surfaces whether a brand is being cited, how frequently, and how its AI-answer presence compares to competitors. This is sold as part of the Semrush One bundle or as a $99/month per-domain add-on. The underlying SEO toolset — keyword gap analysis, technical site audits, backlink prospecting, and on-page scoring — remains the primary reason most users subscribe.

Semrush does not have a lightweight or self-serve free tier. The 7-day trial gives full access to a chosen plan, but all features are gated behind a paid subscription once the trial ends. The data depth and breadth of tooling makes it most viable for teams or individuals running SEO at scale — solo bloggers or very small sites are likely to find the Pro plan’s cost difficult to justify against the limited project and keyword tracking allowances.

Who is it for?

Semrush is best suited for marketing professionals and agencies who need a single platform to research, execute, and report on multiple channels. The tool is overkill for a personal site or a single-product business with minimal SEO ambitions, but becomes practical at the point where a team is managing multiple client accounts, running paid and organic search in parallel, or trying to measure brand presence across both traditional search and AI-generated results.

Typical users include:

• In-house SEO teams at mid-size and enterprise companies who need keyword tracking, technical audits, and competitor benchmarking at scale — the Business plan’s 5,000 tracked keywords and API access support custom reporting pipelines.
• Digital marketing agencies managing 10+ client projects — the Guru plan (15 projects) or Business plan (40 projects) maps to a typical client roster, and white-label reporting is available as an add-on.
• Content strategists and editors who use the Content Marketing Toolkit (Guru+) to build topic clusters, score drafts against ranking competitors, and prioritize content by traffic opportunity.
• Brand and PR managers who want to measure how often their company is cited in LLM outputs and adjust content strategy to increase AI-answer visibility — the use case the AI Visibility toolkit and Semrush One bundle are built around.