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SEO · head to head

Frase vs Lighthouse

Frase logo

Frase

SEO

AI content optimization and research tool for briefs, drafts, and SEO audits

From
$49/month
Rated
-
Full reviewWebsite
Lighthouse logo

Lighthouse

SEO

Audit web page performance and quality

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Lighthouse has a free tier, so it costs nothing to try first.
  • Each has a real cost: Frase the entry-level Starter plan is capped at a single seat and site, which limits it to solo users rather than small teams.; Lighthouse performance scores vary significantly due to A/B testing, device differences, browser extensions, and antivirus software affecting results
  • They diverge on capability: Frase covers Content briefs and outlines, Lighthouse covers Performance scoring.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Frase and Lighthouse actually diverge.

Attributes where Frase and Lighthouse differ
AttributeFraseLighthouse
Starting price$49/monthFree
Pricing modelsubscriptionfree
Free tierNoYes
PlatformswebChrome, Edge
FoundedUnknown1998

Identical on both: user rating (Not yet rated), category (SEO).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Frase

  • Content briefs and outlines
  • AI article drafting
  • Content Guard monitoring
  • Content audits
  • CMS publishing
  • Internal linking suggestions

Only in Lighthouse

  • Performance scoring
  • Accessibility audit
  • SEO check
  • PWA validation
  • Chrome support
  • Edge support

What people use each for

The jobs each tool is most often brought in to do.

Frase

  • Building SEO content briefs from competitor researchnot Lighthouse
  • Drafting articles with AI assisted by SERP datanot Lighthouse
  • Monitoring published content for ranking drops via Content Guardnot Lighthouse
  • Auditing existing site content at scalenot Lighthouse

Lighthouse

  • Performance auditing to identify page loading speed improvementsnot Frase
  • Accessibility compliance checking for users with disabilitiesnot Frase
  • SEO optimization verification for search engine compatibilitynot Frase
  • Security and best practices scanning for code healthnot Frase
  • Progressive web app validation and CI/CD pipeline integrationnot Frase

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Frase

  • The entry-level Starter plan is capped at a single seat and site, which limits it to solo users rather than small teams.
  • Overage charges apply per extra article or audit page once monthly plan limits are exceeded on Professional and Scale.
  • Free trial features are limited to Professional-tier functionality for 7 days rather than reflecting the full product.

Lighthouse

  • Performance scores vary significantly due to A/B testing, device differences, browser extensions, and antivirus software affecting results
  • Limited to metrics that contribute to scores; Opportunities and Diagnostics don't directly impact scoring
  • Diminishing returns above 0.96 score, making perfect 100 scores extremely challenging
  • Scores based on HTTP Archive data which may not reflect all performance scenarios

Pricing, plan by plan

Frase

$49/month
  • Starter$49/month
    • 1 seat, 1 site
    • 10 articles/month
    • 50 audit pages/month
  • Professional$129/month
    • 3 seats, 5 sites
    • 40 articles/month
    • 250 audit pages/month
  • Scale$299/month
    • 5 seats, 10 domains
    • 100 articles/month
    • 1,000 audit pages/month
  • Enterprise$undefined/month
    • White-label portals
    • SSO/SAML
    • Dedicated account manager

Lighthouse

Free
  • FreeFree
    • Performance audit
    • Accessibility check
    • SEO analysis

Which should you pick?

Choose Frase if

  • You need content briefs and outlines.
  • You work on web.
  • You also want ai article drafting.
Frase review

Choose Lighthouse if

  • You need performance scoring.
  • You want to start without paying.
  • You work on Chrome, Edge.
  • You also want accessibility audit.
Lighthouse review

Questions people ask

Is Frase or Lighthouse better?
Neither clearly leads. Frase starts at $49/month and Lighthouse at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Frase or Lighthouse?
Lighthouse has a free tier; the other does not. Paid plans start at $49/month for Frase and Free for Lighthouse.
Does Frase or Lighthouse run on more platforms?
Frase runs on web. Lighthouse runs on Chrome, Edge.
Can I use Lighthouse for free?
Yes. Lighthouse has a free tier, so you can try it without paying. Frase starts at $49/month.
What is Frase best used for?
Frase is most often used for building seo content briefs from competitor research, drafting articles with ai assisted by serp data, monitoring published content for ranking drops via content guard, auditing existing site content at scale. Of those, building seo content briefs from competitor research and drafting articles with ai assisted by serp data are not what Lighthouse is typically brought in for.
What can Frase do that Lighthouse cannot?
Frase covers Content briefs and outlines, AI article drafting, Content Guard monitoring, Content audits. Lighthouse covers Performance scoring, Accessibility audit, SEO check, PWA validation.

Answered from the vendors’ own pages

Frase: What does Frase cost?

Plans run Starter at $49/month, Professional at $129/month, and Scale at $299/month billed monthly, with cheaper annual rates and a custom Enterprise tier.

Source
Lighthouse: Is Lighthouse free?

Yes. Lighthouse is completely free and open-source. It is developed by Google and integrated into Chrome DevTools, PageSpeed Insights, and available as a command-line tool. There are no licensing fees or premium tiers.

Source
Frase: Is there a free trial?

Frase offers a 7-day trial with Professional-level features and no credit card required.

Source
Lighthouse: Can I run Lighthouse offline?

Yes. Lighthouse can run offline in multiple ways: through Chrome DevTools (built into Chrome), as a command-line tool (Node.js), or as a Node.js module integrated into your build process. You do not need an internet connection after installing the tool.

Source
Frase: What happens if I exceed my plan's usage limits?

Professional and Scale plans support optional pay-as-you-go overages, disabled by default, charged per extra article or audit page beyond the monthly cap.

Source
Lighthouse: What pages can Lighthouse audit?

Lighthouse can audit any web page, including pages that require authentication. This is an advantage over some alternative tools that cannot test behind login screens. You can run audits on public pages or authenticated pages via command-line with custom headers.

Source
Frase: What does Frase integrate with?

Frase publishes content to WordPress, Webflow, Sanity, and Wix, or can host pages directly via its own FraseCMS.

Source
Lighthouse: Can Lighthouse prevent performance regression during development?

Yes. Lighthouse CI is available to prevent performance degradation during development cycles. You can integrate Lighthouse CI into your continuous integration pipeline to automatically audit pages on every commit and fail builds if performance metrics fall below thresholds you define.

Source
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