B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
73
73 -- benchmark composite score for Vanilla Claude Code (no skill) (2026-07-07)
Vanilla Claude Code (with no SEO skill installed) achieved a median composite benchmark score of 73.0 in the seo-skill-bench evaluation.
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
73
Unit
Score
Data Vintage
2026-07-07
Entity
Sample Size
10
Geography
Global
Evidence Quality
B
Strong, reliable evidence
Sourced from a well-regarded research firm or industry leader with transparent methodology and a reasonably large sample.
Single source - not yet corroborated
Score breakdown
Extraction
95
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
SEOAgent
Primary
Tier A
https://seoagent.com/blog/best-free-claude-seo-skill ↗
Source Article
Best Claude SEO Skill? An Open Benchmark (2026)
Which Free Claude SEO Skill Is Best? We Built an Open Benchmark — and Our Own Skill Came Last
Star counts don't measure whether an SEO skill gives correct advice. So we built an open benchmark with planted-defect answer keys — and published everything, including the runs where our own skill finished…
Original Research
SEOAgent
· Original study ↗
Methodology
Median of 3 runs in seo-skill-bench full fleet
Methodology documented
Segmentation
IndustryMedia
RegionGlobal
RoleSEO Specialist
Channelsearch
Cite this stat
Plain Text
Vanilla Claude Code (no skill): 73 benchmark composite score. Source: SEOAgent (2026-07-07). Via Lighthouse Intelligence -- https://lighthousedata.io/data/vanilla-claude-benchmark-73
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<blockquote cite="https://lighthousedata.io/data/vanilla-claude-benchmark-73" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>73</strong> -- benchmark composite score for Vanilla Claude Code (no skill)<br><small>Source: SEOAgent (2026-07-07) · <a href="https://lighthousedata.io/data/vanilla-claude-benchmark-73" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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