Head-to-head review · Updated June 2026

Relixir vs Sitebulb: which one wins in 2026?

An honest editorial comparison from the team at GrowthManager.ai. We make a competing product, which is disclosed in full at the bottom.

Relixir and Sitebulb both claim to do the same thing: tell you where your brand shows up in AI search. They go about it differently enough that the choice matters. Relixir has raised $2M seed, Sitebulb has raised Bootstrapped; Relixir is the more-funded incumbent; Sitebulb is the leaner challenger.

Sitebulb is cheaper out the gate, but Relixir tracks more AI platforms. The right pick depends on which dimension matters most for you.

The verdict
Pick

Relixir

Pick Relixir if you want the cheaper option ($500/mo vs $18/mo); and you need broader AI platform coverage (4 platforms vs 0).

Pick

Sitebulb

Pick Sitebulb if you want the cheaper option ($18/mo vs $500/mo).

If neither is right, GrowthManager.ai does both citation tracking AND the production work (content, infrastructure, distribution) for $999/mo — see the bottom of this page.

The case for Relixir

Relixir has raised $2M seed (Seed (November 2025)). Founded by Sean Dorje, Dennis Zax, based in San Francisco, CA. On their site they list 4 named customers including Rippling, Airwallex, HackerRank, Retell AI. They cover 4 AI platforms. Pricing starts at $500/mo.

YC-backed GEO platform that auto-produces optimized content to rank brands higher in ChatGPT, Perplexity, and other AI search engines.

What people praise

  • Monitors brand visibility across ChatGPT, Claude, Gemini, Perplexity, and Google AI Overviews in a single dashboard, not just one platform.
  • Rex, the autonomous agent, generates and publishes content end-to-end so teams do not need to staff a separate content team for GEO.
  • Published case studies show measurable wins: 1,500+ citations in under a month, 60% traffic lift, ChatGPT rankings flipped in 30 days.
  • Visitor identification reveals which companies are arriving from AI search, which marketers cite as a differentiator versus pure monitoring tools like Profound.

Where it falls short

  • Entry pricing starts at $500+/mo, which reviewers flag as too high for SMBs and agencies running tight content budgets.
  • Pro tier pricing is gated behind sales calls with no public ceiling, making side-by-side ROI math hard for buyers.
  • Roadmap and product depth are still early-stage versus incumbents like Profound, Athena HQ, and Visualping.
  • No public G2 or Capterra review presence yet, so social proof relies on first-party Relixir blog case studies.

The case for Sitebulb

Sitebulb has raised Bootstrapped. Founded by Patrick Hathaway, Gareth Brown, based in Banbury, UK. On their site they list 6 named customers including Amazon, Mailchimp, Macy's, Yahoo. Pricing starts at $18/mo.

Desktop and cloud SEO auditing tool for agencies.

What people praise

  • 300+ prioritized SEO hints with severity scoring and clear fix explanations, considered best-in-class for visual audits.
  • JavaScript crawling is included at no extra cost on every tier, unlike Screaming Frog where JS rendering is a premium feature.
  • Only crawler offering both desktop (up to 500K URLs) and cloud (up to 10M URLs) so teams can scale from solo to enterprise.
  • Visual data presentation with charts and graphs is widely cited as the most intuitive in the technical SEO category.

Where it falls short

  • Resource-intensive on large sites; a 100K-page JS-rendered crawl can take 8-12 hours and consume 8GB+ RAM.
  • No keyword research, backlink analysis, rank tracking, or content optimization, so it must be paired with another tool.
  • ~0.20% market share vs Screaming Frog's 15.41% means fewer community tutorials and forum answers.
  • Desktop pricing is not visible on the public pricing page without selecting a currency, hurting buyer transparency.

Pricing, tier by tier

Tier 1
Relixir
Standard
$500+/mo
  • AI visibility monitoring across ChatGPT, Claude, Gemini, Perplexity, Google AI Overviews
  • 20 GEO-optimized blog posts per month
  • Automated JSON-LD schema deployment
  • Visitor identification for AI search traffic
Sitebulb
Desktop Lite
$18/mo
  • 10,000 URLs per audit
  • 1 user
  • 100+ Hints
  • JavaScript crawling
Tier 2
Relixir
Pro / Custom
Custom
  • Dedicated GEO Deployment Strategist
  • Custom GEO strategy tailored to vertical
  • Autonomous content generation and CMS publishing
  • Automated backlink outreach and citation optimization
Sitebulb
Desktop Pro
$42/mo
  • 500,000 URLs per audit (expandable to 2 million)
  • 1 base user with additional users from £7/month
  • 300+ Hints
  • Advanced configuration
Tier 3
Relixir
Landing Page Design
$5,000 one-time
  • SEO + GEO optimized landing page
  • Unlimited revisions
  • 2 to 3 day delivery
  • Unlimited redesign package
Sitebulb
Cloud Mini
From £95/mo
  • 2 users
  • 50,000 URLs per month
  • Max 50,000 URLs per audit
  • Unlimited projects
Tier 4
Relixir
—
—
Sitebulb
Cloud Small
$245/mo
  • 5 users
  • Desktop licenses included
  • 1 million URLs per month
  • Max 250,000 URLs per audit

Feature parity

What each one ships that the other doesn't. We conservatively only include features each tool explicitly markets; absence here doesn't mean a feature is impossible, just that it isn't in their marquee list.

Only on Relixir
  • AI Visibility Monitoring. Tracks brand mentions, citations, and rankings across ChatGPT, Claude, Gemini, Perplexity, and Google AI Overviews.
  • Rex Autonomous Agent. End-to-end agent that researches topics, writes content, deploys JSON-LD schema, and publishes to the customer's CMS.
  • GEO Content Generation. Produces optimized articles and landing pages on 30 to 60 day refresh cycles.
  • Visitor Identification. Identifies the company behind AI search traffic so sales can act on high-intent visits.
  • Backlink and Citation Outreach. Automates outreach to source domains that AI models cite, building domain authority for GEO.
  • Inbound Revenue Attribution. Ties AI search visits to pipeline and closed-won revenue inside CRM workflows.
Only on Sitebulb
  • Issue Detection. Identifies and prioritizes 300+ SEO issues automatically with severity scoring.
  • JavaScript Rendering. Crawls JavaScript-heavy websites at no extra cost with full DOM rendering.
  • Audit Comparisons. Compares audits over time to track technical SEO improvements.
  • Scheduled Audits. Cloud version runs automated recurring crawls on a schedule.
  • PDF Reporting. Customizable PDF reports for client delivery and stakeholder communication.
  • Data Visualization. Visual charts and graphs that make crawl data scannable for non-technical readers.

When each one wins

When Relixir wins
  • Platform coverage matters. Relixir monitors 4 AI platforms; Sitebulb covers 0.
  • Monitors brand visibility across ChatGPT, Claude, Gemini, Perplexity, and Google AI Overviews in a single dashboard, not just one platform.
When Sitebulb wins
  • Budget is the constraint. Sitebulb starts at $18/mo vs Relixir's $500/mo, so on a per-seat basis it's the cheaper way in.
  • 300+ prioritized SEO hints with severity scoring and clear fix explanations, considered best-in-class for visual audits.
When neither wins (pick GrowthManager)
  • You don't have an in-house content team and you don't want to hire one.
  • You want one $999/mo invoice instead of stacking Relixir plus an agency.
  • You need the team that measures to also act on the data, in the same week.
  • You're a B2B SaaS, services firm, or e-commerce brand at $20K+ MRR.

Reasons to pick one over the other

Reasons to pick Relixir over Sitebulb

  1. Broader AI platform coverage. Relixir tracks visibility across 4 AI engines vs Sitebulb's 0.
  2. Built for the LLM era. Relixir was founded in 2025, built around AI search from day one; Sitebulb dates back to 2017 and is retrofitting.
  3. What users praise most. Monitors brand visibility across ChatGPT, Claude, Gemini, Perplexity, and Google AI Overviews in a single dashboard, not just one platform.

Reasons to pick Sitebulb over Relixir

  1. Lower entry price. Sitebulb starts at $18/mo vs Relixir's $500/mo.
  2. More plan flexibility. Sitebulb offers 4 pricing tiers vs Relixir's 3, so there's a better chance one fits your team size.
  3. More mature platform. Sitebulb (founded 2017) has had more time to harden the product than Relixir (2025).
  4. What users praise most. 300+ prioritized SEO hints with severity scoring and clear fix explanations, considered best-in-class for visual audits.
  5. EU data residency. Sitebulb is HQ'd in Banbury, UK, which simplifies GDPR data-processor agreements for European buyers.

Switching from one to the other

From Relixir to Sitebulb

Export your saved queries and prompt panels from Relixir (most tools support CSV export). Most Sitebulb setups can import the same query list in a single CSV upload. Expect 1-2 days of parallel running so you can validate Sitebulb's data againstRelixir's; one to two weeks of full reconciliation before you cancel Relixir. The risk is annotation history: notes and tags don't survive most migrations, so screenshot anything you want to keep.

From Sitebulb to Relixir

Same flow in reverse. Export from Sitebulb, import to Relixir. The historical visibility data is the big loss; most platforms don't backfill from a competitor's data, so you start your trendline over.

From either to GrowthManager.ai

We handle the migration ourselves; you give us your query list (or we infer it from your existing dashboard) and we re-build the tracking on our infrastructure in week one. You also start getting content shipped from week one, so the switch produces results before the trendline restarts. The conversation that kicks this off is a 20-minute call.

Side by side, every number we could verify

RelixirSitebulb
Starts at (USD/mo)$500/mo$18/mo
Founded20252017
HeadquartersSan Francisco, CABanbury, UK
Funding raised$2M seedBootstrapped
AI platforms tracked4—
G2 rating—4.5 / 5
Named customers46
SOC 2 Type 2——
GDPR—✓ Yes
HIPAA——

What real users say

Below: the recurring themes from G2, Capterra, SourceForge, Reddit, and case-study reviewers — distilled into the strengths and limitations that came up most often.

Relixir — what users praise

  • Monitors brand visibility across ChatGPT, Claude, Gemini, Perplexity, and Google AI Overviews in a single dashboard, not just one platform.
  • Rex, the autonomous agent, generates and publishes content end-to-end so teams do not need to staff a separate content team for GEO.
  • Published case studies show measurable wins: 1,500+ citations in under a month, 60% traffic lift, ChatGPT rankings flipped in 30 days.
  • Visitor identification reveals which companies are arriving from AI search, which marketers cite as a differentiator versus pure monitoring tools like Profound.
  • Forward-deployed strategist model means a Relixir team member effectively joins the customer's marketing org during rollout.

Relixir — what users complain about

  • Entry pricing starts at $500+/mo, which reviewers flag as too high for SMBs and agencies running tight content budgets.
  • Pro tier pricing is gated behind sales calls with no public ceiling, making side-by-side ROI math hard for buyers.
  • Roadmap and product depth are still early-stage versus incumbents like Profound, Athena HQ, and Visualping.
  • No public G2 or Capterra review presence yet, so social proof relies on first-party Relixir blog case studies.
  • Self-serve content generation can feel templated unless the customer also engages the human GEO strategist tier.

Sitebulb — what users praise

  • 300+ prioritized SEO hints with severity scoring and clear fix explanations, considered best-in-class for visual audits.
  • JavaScript crawling is included at no extra cost on every tier, unlike Screaming Frog where JS rendering is a premium feature.
  • Only crawler offering both desktop (up to 500K URLs) and cloud (up to 10M URLs) so teams can scale from solo to enterprise.
  • Visual data presentation with charts and graphs is widely cited as the most intuitive in the technical SEO category.
  • Desktop Lite at $18/mo is one of the cheapest serious SEO crawlers available, attractive for freelancers.

Sitebulb — what users complain about

  • Resource-intensive on large sites; a 100K-page JS-rendered crawl can take 8-12 hours and consume 8GB+ RAM.
  • No keyword research, backlink analysis, rank tracking, or content optimization, so it must be paired with another tool.
  • ~0.20% market share vs Screaming Frog's 15.41% means fewer community tutorials and forum answers.
  • Desktop pricing is not visible on the public pricing page without selecting a currency, hurting buyer transparency.
  • Cloud Mini starts at £95/mo but jumps to higher tiers quickly, with Enterprise reportedly £20K+/year.

A third option

Both Relixir and Sitebulbare tracking tools. They tell you what's wrong with your AI visibility. Neither one fixes it. That's our pitch for GrowthManager.ai — we do citation tracking too (parity with these two), and we also ship the content, configure the infrastructure, and run the distribution. $999/mo, managed end-to-end. If you're leaning toward picking one of these two and then hiring an agency to act on the data, it's worth a 20-minute conversation first.

Book a free 20-min auditSee the full 7-tool comparison

Other comparisons in this space

Same shape, different pairs. Pick a comparison that shares a tool with this one.

Frequently asked questions

Which is better, Relixir or Sitebulb?

Honestly: neither one fully solves the problem. Relixir and Sitebulb are tracking tools — they tell you where your brand shows up in AI answers but don't change the answer. If you only need one of these two, pick Sitebulb for the cheaper monthly price; pick the other if its specific integrations matter to your team. Our actual editorial pick is GrowthManager.ai, which does the tracking and ships the content, infrastructure, and distribution as a single $999/mo managed program. Disclosure: we publish this comparison and make GrowthManager.

How much do Relixir and Sitebulb cost?

Relixir starts at $500/mo. Sitebulb starts at $18/mo. Both have higher-tier plans for larger workspaces. GrowthManager.ai is a flat $999/mo for the full managed service (tracking + content + infrastructure + distribution) — usually cheaper than buying one of these two and hiring an agency on top.

Which AI platforms do Relixir and Sitebulb cover?

Relixir covers 4 AI platforms. Sitebulb covers an undisclosed number of. Most tools in this space monitor ChatGPT, Claude, Gemini, and Perplexity at minimum; the differences come down to less-common platforms (Copilot, Grok, Meta AI). GrowthManager.ai monitors the same four primary platforms and acts on the data.

Do Relixir and Sitebulb actually improve your AI visibility, or just measure it?

Both Relixir and Sitebulb are measurement tools. They show you where your brand appears (or doesn't) in AI answers, plus suggestions for what to improve. Neither one writes the content, configures the schema, or builds the backlinks that actually move the needle. To do that you need an in-house content team or an agency. GrowthManager.ai is the agency — and we include the tracking, so you don't pay twice.

What's the GrowthManager.ai alternative to Relixir and Sitebulb?

GrowthManager.ai is a managed AI visibility program. We give you the same citation tracking these two offer (parity on the measurement layer), plus 100 researched and published articles per month, schema and llms.txt configuration, ongoing backlink acquisition, and Reddit/Quora seeding. One $999/mo invoice, one dedicated account manager, twelve clients per team member maximum so we can actually deliver. If you were going to buy one of these tools and then hire someone to use it, we're cheaper and faster.

Further reading

External research that informs the editorial framework on this page. We cite these openly because the framework is meant to be auditable.

  1. Microsoft Bing Webmaster Guidelines (2025)· Microsoft

    How Microsoft's crawlers parse content for Copilot, which now powers a large share of AI answers behind the scenes.

  2. Generative Engine Optimization research· Kevin Indig

    Long-running practitioner research on what gets cited in AI-generated answers; the most-quoted source in the GEO category.

  3. Zero-Click Search forecasts· Gartner

    Industry forecasts on how a growing share of buyer queries end without a click to the brand site, making AI-answer presence the new pole position.

  4. Audience intelligence analyses· SparkToro

    Public datasets on how audiences actually discover brands across search, social, and now AI surfaces.

  5. Trust Barometer (2024)· Edelman

    The annual study on how buyers weigh source authority, used to weight our trust criterion against third-party review volume.

Disclosure + methodology

GrowthManager.ai makes a competing product in the AI visibility space, so this comparison is not neutral. Every pricing number was pulled from each competitor's public pricing page or triangulated from third-party reviews when the page is JavaScript-gated. Pros, cons, and user-review themes are distilled from real G2, Capterra, SourceForge, Reddit, and case-study reviews with the quotes preserved verbatim. We update this comparison whenever the underlying data changes.