Originality.ai vs Semrush (2026)
We compared both. Here is the honest comparison.
Originality.ai
81/100
From $0.01/credit
Top PickVS
Semrush
79/100
$140/mo
Top PickScore Breakdown
Category
Originality.ai
Semrush
Output Quality
86
▲ Wins80
▼ LosesSpeed
78
▲ Wins72
▼ LosesEase of Use
80
▲ Wins64
▼ Losesfeatures
76
▼ Loses94
▲ WinsOverall
81
79
Pricing
Starting Price
From $0.01/credit
$140/mo
Real Price
$14.95/mo
$140/mo
Price Note
Pay-per-scan or $14.95/mo for 200 scans
Pro plan (1 user)
Originality.ai
Best For
✓ SEO agencies managing AI content at scale
✓ Publishers with contributor networks
✓ Content managers verifying AI usage policies
Not For
✗ Casual bloggers who write their own content
✗ Writers who don't need AI detection in their workflow
Semrush
Best For
✓ SEO agencies
✓ Enterprise content teams
✓ Serious niche site builders
Not For
✗ Beginners
✗ Low-budget operations
✗ Simple keyword research
Pros & Cons
Originality.ai
+ Highest detection accuracy we've reviewed — caught GPT-4o, Claude, and Gemini outputs
+ Combines AI detection + plagiarism check in one scan
+ Readability scoring alongside detection results
+ Team features: scan multiple URLs, export reports, API access
+ Full-site scan mode — checks entire domains, not just pasted text
− Credit model gets expensive for high-volume content operations (100K+ words/mo)
− Occasional false positives on highly formulaic human writing
− No real-time browser extension (must paste text or submit URL)
Semrush
+ Most comprehensive keyword database: 25B+ keywords
+ Competitor traffic analysis is best-in-class
+ Position tracking with daily updates
+ Site audit catches 130+ technical SEO issues
+ ContentShake AI writes SEO articles inside the tool
− Expensive — $140/mo is steep for solo operators
− Data overload — overwhelming for beginners
− Some features duplicated across tools