If your Semrush subscription forces you to split campaigns across accounts or run manual audits because you hit hard limits, the cost of the wrong plan shows up as wasted time. The choice between Starter and Pro+ is not just price — it’s about how many active projects you run, how granular your daily keyword and AI-prompt tracking must be, and whether you need historical and benchmarking tools to diagnose changes and win pitches.

Key numeric differences that determine capacity

At list price, Starter is aimed at smaller operations: $199/month billed monthly (about $165.17/month with annual billing). Pro+ sits at $299/month (about $248.17/month with annual billing). Those prices reflect materially different capacity limits:

  • SEO projects: Starter = 5 projects; Pro+ = 15 projects.
  • Daily Position Tracking and AI prompts: Starter = 500 keywords and 50 prompts; Pro+ = 1,500 keywords and 100 prompts.
  • Historical SEO data: Pro+ includes monthly data back to 2012; Starter does not include historical data.
  • Analytical reports and features: Compare Domains, multi-targeting in Position Tracking, and the Keyword Cannibalization report are available in Pro+ but not in Starter.

Both plans include Brand Performance — Semrush’s AI visibility tool — for one brand (it tracks 200 prompts and reports AI sentiment and share of voice on a weekly basis). Additional brands cost $99 per month on either plan, so multi-brand agencies should factor that into pricing comparisons.

Which features actually change day-to-day work?

Raw numbers matter, but the practical impact comes down to how those limits change your workflow.

  • Project limits: If you manage more than five active SEO programs (clients, separate brand properties or distinct market projects), Starter forces consolidation or account workarounds. Pro+ triples project capacity to 15, letting teams keep projects separate and reports clean.
  • Daily keyword and prompt quotas: Starter’s 500-keyword and 50-prompt limits can be enough for a focused single-site program. Pro+’s 1,500/100 allowance gives room to track broader product categories, long-tail terms, or multiple client portfolios without constantly rotating tracked terms.
  • Historical data: Monthly history back to 2012 changes what you can explain and defend in reports. Pro+ lets you correlate past traffic shifts with ranking changes or competitor moves — useful for onboarding, pitches and root-cause analysis.
  • Compare Domains: Side-by-side benchmarking (up to five domains) accelerates competitive analysis and helps build clearer pitches. Without it, teams must assemble the same comparisons manually.
  • Multi-targeting: Track multiple locations, devices, languages or AI platforms inside a single project. That avoids creating duplicate projects just to separate targets, simplifying reporting for multi-location brands.
  • Keyword Cannibalization report: Pro+ surfaces competing pages so you can prioritize consolidation or targeting fixes; without it, audits are slower and more manual.

How to choose: a practical checklist

Run this quick diagnostic against your actual workload:

  • Count active SEO projects you must monitor now and in the next 6–12 months. More than five? Favor Pro+.
  • Estimate daily keywords and AI prompts you need to track. If you need broad coverage across categories or multiple clients, Pro+ provides headroom.
  • Do you need historical data to explain past performance or support pitches? If yes, Pro+ is the practical choice.
  • Will you benchmark prospects or competitors frequently? Compare Domains in Pro+ saves time and strengthens proposals.
  • Do you need to track multiple locations, devices or languages within the same project? Multi-targeting in Pro+ reduces project sprawl.
  • If you manage multiple brands, remember Brand Performance applies to one brand per plan; extra brands are $99/month each on both plans.

For freelancers, solo SEOs or small in-house teams focused on a single site with a compact keyword list, Starter usually covers the essentials. For agencies, expanding consultancies or teams scaling across markets or client accounts, Pro+ supplies the capacity and analytics that reduce manual tasks and improve diagnostics.

Next step: run a short audit — list active projects, map priority keywords and prompts to each project, and flag how often you need historical context or side-by-side comparisons. That exercise will reveal whether you’ll hit Starter’s caps or can operate comfortably within them. If several answers point to capacity limits, trial Pro+ to check whether the higher headroom and reports save enough time to justify the cost.