Semrush vs Optimizely Experimentation

Semrush9.3Visit Optimizely Experimentation8.8Visit

Higher score Semrush #1 in Website Optimization Tools 9.3/10 Free plan · 7-day trial Free planFree trial✓ 1 of 3 features Visit Semrush

vs

Optimizely Experimentation #5 in Website Optimization Tools 8.8/10 Free plan Free plan✓ 0 of 3 features Visit Optimizely

• Semrush fits best

  Teams needing all-in-one SEO research and site optimization

• Optimizely Experimentation fits best

  Teams optimizing pages through experimentation

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Side by side

Feature	Semrush 9.3/10 Visit ↗	Optimizely Experimentation 8.8/10 Visit ↗
At a glance
Editor score	9.3	8.8
Ranking	#1 in Website Optimization Tools	#5 in Website Optimization Tools
Best for	Teams needing all-in-one SEO research and site optimization	Teams optimizing pages through experimentation
Pricing model	Free plan + paid	Free plan + paid
Starting price	—	—
Free plan	✓	✓
Free trial	7 days	—
Deployment	Cloud	Cloud
Platforms	Web	Web, iOS, Android
Support	Tickets, Docs, Community	Tickets, Community, Docs
Compliance	PCI DSS	SOC 2, ISO 27001, GDPR, HIPAA, PCI DSS
Integrations	20+ integrations	3 integrations
Built for	Solo, Small business, Mid-market, Enterprise	Small business, Mid-market, Enterprise
Features Semrush 1/3 · Optimizely Experimentation 0/3
Site audit	✓ (best)	Not checked yet
A/B testing	Not checked yet	Not checked yet
Page speed monitoring	Not checked yet	Not checked yet
Specs
Optimization focus	Not checked yet	Not checked yet
Tracked sites	Not checked yet	Not checked yet
Our review
Pros	Combines keyword, competitor, rank-tracking, audit, and backlink research Tracks rankings across locations, devices, and search engines Connects with Google Analytics, Search Console, Ads, and other platforms	Combines visual web tests with server-side experimentation. Supports feature flags, controlled rollouts, and audience targeting. SDKs cover web, iOS, Android, and APIs.
Cons	Free access is limited to one demo project and 10 reports per day Historical SEO data and content optimization are on Pro+ API data integration is listed with Advanced	Paid plans are individually packaged, with no public prices. The free Rollouts plan focuses on flags, rollouts, and A/B testing. SEO research and audit coverage is limited.
Our verdict	Semrush brings keyword research, competitor analysis, rank tracking, technical site auditing, backlink analysis, content optimization, and reporting into a cloud-based marketing platform. Its broader offering includes AI search visibility… Read the review →	Optimizely Experimentation brings web and feature experimentation together for marketing, product, and engineering teams. It is suited to organizations that want to test page variations as well as product behavior across websites, mobile… Read the review →

Strengths and trade-offs

• Semrush — where it wins

  • Combines keyword, competitor, rank-tracking, audit, and backlink research
  • Tracks rankings across locations, devices, and search engines
  • Connects with Google Analytics, Search Console, Ads, and other platforms

  Where it doesn't

  • Free access is limited to one demo project and 10 reports per day
  • Historical SEO data and content optimization are on Pro+
  • API data integration is listed with Advanced

• Optimizely Experimentation — where it wins

  • Combines visual web tests with server-side experimentation.
  • Supports feature flags, controlled rollouts, and audience targeting.
  • SDKs cover web, iOS, Android, and APIs.

  Where it doesn't

  • Paid plans are individually packaged, with no public prices.
  • The free Rollouts plan focuses on flags, rollouts, and A/B testing.
  • SEO research and audit coverage is limited.

• Semrush9.3/10 · Free plan · 7-day trial

  Broad SEO research, tracking, auditing, and content tools, with a limited free plan.

  Visit SemrushFull verdict →
• Optimizely Experimentation8.8/10 · Free plan

  A broad experimentation toolkit for teams testing web and product experiences.

  Visit OptimizelyFull verdict →