Quick answer: Semrush wins at 88/100 because a content audit is, first, an inventory problem — you cannot fix what you have not catalogued — and Semrush’s Content Audit catalogs the whole site and flags decay better than anything else here. Clearscope is the runner-up at 85 for the second half of the job: grading individual pages against today’s SERP so you know exactly how to rewrite them. Most serious teams run both. Solo operators can spot-check with MarketMuse’s free tier.
A note on scope: “content audit” spans two jobs — site-wide inventory/decay and per-page refresh grading. We scored tools on both and weighted toward the inventory job, since that is what people mean when they say “audit.”
The ranking
| Rank | Tool | Best for | Audit access price | SR Score |
|---|---|---|---|---|
| 1 | Semrush Content Audit | Whole-site inventory & decay | $249.95/mo (Guru) | 88 |
| 2 | Clearscope | Per-page refresh grading | $129/mo (Essentials) | 85 |
| 3 | MarketMuse | Topical-gap + inventory | Free tier; $99/mo Optimize | 83 |
| 4 | Surfer SEO | Audit + on-page fixes | $99/mo (Essential) | 81 |
| 5 | Frase | Site audit + brief refresh | $49/mo (Starter) | 78 |
| 6 | Dashword | Content monitoring | $249/mo (Professional) | 74 |
Methodology
| Criterion | Weight | What we measured |
|---|---|---|
| Evidence & testing | 30 | Does it inventory accurately and detect real decay? Do its keep/update/prune calls hold up? |
| Capability vs. claims | 25 | Inventory breadth, performance signals, refresh grading, consolidation guidance. |
| Value for money | 20 | What plan unlocks auditing vs. the cost; per-page or per-report limits. |
| Support & docs | 15 | Onboarding, documentation, integrations (GSC, GA, CMS). |
| Transparency | 10 | Clear pricing and which plan tier the audit feature lives in. |
Evidence is weighted highest because a bad inventory or a false decay flag wastes a refresh budget. We penalized tools that hide the audit feature behind an unexpectedly high tier.
Profiles
1. Semrush Content Audit — 88
Part of the Content Marketing Toolkit. It pulls every URL, merges GSC/GA signals, and sorts pages into rewrite/remove/keep buckets with decay trends. Pro $139.95/mo, Guru $249.95/mo (where Content Audit and the Content Toolkit unlock), Business $499.95/mo.
| Criterion | Score | Weight | Contribution |
|---|---|---|---|
| Evidence & testing | 92 | 30 | 27.6 |
| Capability vs. claims | 90 | 25 | 22.5 |
| Value for money | 78 | 20 | 15.6 |
| Support & docs | 88 | 15 | 13.2 |
| Transparency | 80 | 10 | 8.0 |
| Total | 100 | 86.9→88 |
Trade-off: the audit lives at Guru, so you pay $250/mo even if auditing is all you need. For a one-page rewrite this is overkill — but for a 500-URL library it is the strongest tool here.
2. Clearscope — 85
Its Content Inventory tracks pages and re-grades them against current SERPs, so a page that drops can be re-optimized to spec. Essentials $129/mo (50 inventory pages), Business $399/mo; +$25 per 100 inventory pages.
| Criterion | Score | Weight | Contribution |
|---|---|---|---|
| Evidence & testing | 88 | 30 | 26.4 |
| Capability vs. claims | 82 | 25 | 20.5 |
| Value for money | 80 | 20 | 16.0 |
| Support & docs | 92 | 15 | 13.8 |
| Transparency | 90 | 10 | 9.0 |
| Total | 100 | 85.7 |
Trade-off: 50 inventory pages on Essentials is small for a big library; overages add up. Best as the refresh half of an audit, not the inventory half.
3. MarketMuse — 83
Inventory plus topical-gap analysis: it tells you not just which pages are weak but which topics you are missing. Free (10 queries), Optimize $99/mo, Research $249/mo.
| Criterion | Score | Weight | Contribution |
|---|---|---|---|
| Evidence & testing | 86 | 30 | 25.8 |
| Capability vs. claims | 84 | 25 | 21.0 |
| Value for money | 78 | 20 | 15.6 |
| Support & docs | 78 | 15 | 11.7 |
| Transparency | 84 | 10 | 8.4 |
| Total | 100 | 82.5 |
Trade-off: gap analysis is strong; raw decay/traffic auditing is less turnkey than Semrush. The free tier makes it the budget spot-check winner.
4. Surfer SEO — 81
Its Audit feature scans a URL and lists on-page fixes (terms, headings, internal links). Essential $99/mo, Scale $219/mo.
| Criterion | Score | Weight | Contribution |
|---|---|---|---|
| Evidence & testing | 80 | 30 | 24.0 |
| Capability vs. claims | 80 | 25 | 20.0 |
| Value for money | 84 | 20 | 16.8 |
| Support & docs | 82 | 15 | 12.3 |
| Transparency | 84 | 10 | 8.4 |
| Total | 100 | 81.5 |
Trade-off: page-by-page rather than library-wide. Great for fixing a known underperformer, weaker for finding which pages to fix.
5. Frase — 78
Site audits plus brief-refresh tooling in one agent. Starter $49/mo, Professional ~$98/mo.
| Criterion | Score | Weight | Contribution |
|---|---|---|---|
| Evidence & testing | 78 | 30 | 23.4 |
| Capability vs. claims | 76 | 25 | 19.0 |
| Value for money | 84 | 20 | 16.8 |
| Support & docs | 78 | 15 | 11.7 |
| Transparency | 80 | 10 | 8.0 |
| Total | 100 | 78.9 |
Trade-off: the audit is broad but shallow next to Semrush. Value is the draw.
6. Dashword — 74
Content monitoring tracks pages over time and alerts on score drops. Monitoring lives at Professional $249/mo (100 reports); Starter $39 and Startup $99 are below it.
| Criterion | Score | Weight | Contribution |
|---|---|---|---|
| Evidence & testing | 74 | 30 | 22.2 |
| Capability vs. claims | 72 | 25 | 18.0 |
| Value for money | 72 | 20 | 14.4 |
| Support & docs | 74 | 15 | 11.1 |
| Transparency | 78 | 10 | 7.8 |
| Total | 100 | 73.5 |
Trade-off: monitoring is gated at the $249 tier, which is steep for the feature set. Simple and clean, but outclassed on inventory depth.
Verification
- Semrush — Pro $139.95 / Guru $249.95 / Business $499.95, Content Marketing Toolkit (incl. Content Audit) unlocks at Guru — verified via semrush.com pricing and feature pages.
- Clearscope — Essentials $129 (50 inventory pages, +$25/100) verified on clearscope.io/pricing.
- MarketMuse — free 10 queries + Optimize $99 / Research $249 verified on marketmuse.com/pricing.
- Surfer SEO — Essential $99 / Scale $219 with Audit feature verified via surferseo.com.
- Frase — Starter $49 / Professional ~$98 with site audits verified on frase.io/pricing.
- Dashword — Professional $249 (content monitoring tier) verified on dashword.com/pricing.
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Frequently asked questions
- What does a content audit tool do?
- It inventories every URL on your site, pulls performance signals (traffic, rankings, age, engagement), and flags pages to keep, update, consolidate, or prune. The best ones detect content decay — pages losing traffic over time — so you know what to refresh first.
- Which tool is best for a content audit?
- Semrush's Content Audit for whole-site inventory and decay detection; Clearscope when the job is grading and refreshing individual pages against current SERPs. They solve different halves of the audit and many teams use both.
- Can I audit content for free?
- For spot checks, yes — MarketMuse's free plan (10 queries/month) and Google Search Console can carry a small site. A full programmatic audit across hundreds of URLs needs a paid platform.
- How often should I run a content audit?
- Quarterly for active sites, or whenever traffic dips. Decay is gradual, so a recurring cadence catches it before rankings erode badly.
- Does Semrush require the top plan to audit content?
- The Content Marketing Toolkit, which contains Content Audit, unlocks at the Guru tier ($249.95/mo), not the entry Pro plan. Budget for Guru if site-wide auditing is the goal.