Seolyzer vs Sitebulb in 2026: Real-time log fusion for crawl budget vs a prioritized-hints crawler from $18/month
Seolyzer fuses crawl data, live server logs, and Search Console into one enterprise view, but you need a demo to find out what it costs. Sitebulb publishes its pricing, ships JavaScript rendering on every tier, and turns 300+ audit hints into something a junior can act on.
Seolyzer
Sitebulb- Seolyzer's cross-analysis mode fuses crawl data, real-time server logs, and Google Search Console into a single view, a combination Sitebulb does not offer.
- Sitebulb includes JavaScript rendering on every tier, including the $18/month Lite plan; Seolyzer's public site does not list JS rendering as a capability.
- Sitebulb publishes transparent pricing from $18 (Lite) to $125+ (Cloud); Seolyzer requires a demo and discloses no pricing on any of its three tiers.
- Seolyzer's API is validated at real enterprise scale, ManoMano uses it to pull millions of internal links for data science work. Sitebulb has no API; its closest equivalent is a Model Context Protocol server still in a waitlist phase.
- Both tools are explicit about not tracking AI search visibility: Seolyzer's own FAQ states it has no AI Overviews or LLM visibility tracking, and Sitebulb's in-development MCP server lets AI tools query crawl data rather than tracking AI citations.
- Sitebulb Cloud scales to 10 million URLs per audit with team collaboration built in; Seolyzer publishes no crawl limits, since scale is negotiated per plan during the demo.
- Seolyzer carries named enterprise credibility, Club Med and ManoMano as clients, plus an endorsement from Aleyda Solis, that Sitebulb's public materials do not cite by name.
Seolyzer and Sitebulb are both technical SEO crawlers, but they are built for different levels of technical fluency and different budgets. Seolyzer's core differentiator is cross-analysis: fusing site crawl data, real-time server log streaming, and Google Search Console into one view, which is genuinely useful for diagnosing crawl budget problems but assumes the person using it already understands log file behaviour. Sitebulb takes the opposite approach, wrapping 300+ prioritized "Hints" in plain-language explanations and clear visual reporting so teams newer to technical SEO can act on findings without a log analysis background. Seolyzer requires a demo and discloses no pricing on any of its three tiers; Sitebulb starts at $18 a month with a 14-day free trial and no sales call required.
The tools at a glance
Seolyzer
Technical SEO data platform combining site crawling, real-time log analysis, and Google Search Console in one interface
Seolyzer's reason for existing is the gap between what a crawler tells you your site looks like and what Googlebot actually does when it visits. Its cross-analysis mode merges crawl data, real-time server log streaming, and Google Search Console signals into one view, so you can see pages that are crawled but never indexed, pages with GSC impressions that Googlebot rarely visits, and structural problems invisible in any single data source on its own.
The log analysis is genuinely real-time, not a batch import you run weekly. Connect server logs and watch Googlebot activity stream as it happens, which matters most during migrations, crawl budget recovery work, or investigating why technically sound pages are not getting indexed. This is a tool built for people who already understand log file formats and bot behaviour; it is not trying to teach that skill along the way.
Client testimonials from Club Med and ManoMano, along with an endorsement from Aleyda Solis, back up its enterprise credibility, and ManoMano's use of the API to pull millions of internal links for data science work confirms it holds up at real scale. What it does not offer is public pricing, a free trial, or any AI search visibility tracking, its own FAQ says outright that AI Overviews and LLM visibility are out of scope.
| Feature | Starter Contact for pricing | Professional Contact for pricing | Enterprise Contact for pricing |
|---|---|---|---|
| SEO crawler | Yes | Yes | Yes |
| Real-time log analysis | Yes | Yes | Yes |
| Cross-analysis (crawl + logs + GSC) | No | Yes | Yes |
| API access | No | Yes | Yes |
| Scheduled / recurring crawls | No | Yes | Yes |
| GDPR-compliant EU hosting | Yes | Yes | Yes |
Sitebulb
Website crawler for technical SEO audits with prioritized hints and visual reporting
Sitebulb's pitch is that a crawler should tell you what to do with the data, not just hand it over. Every crawl runs through 300+ prioritized Hints, ranked by severity, each with built-in educational context explaining why an issue matters. That makes it useful for onboarding junior team members in a way a raw crawl export is not, since the tool teaches as it audits rather than assuming the person reading the report already knows the reasoning.
It ships in two modes: Desktop for local control up to 500,000 URLs on the Pro tier, and Cloud for team collaboration, automated recurring crawls, and audits up to 10 million URLs, with the two integrating natively so a cloud crawl can be triggered from the desktop app. JavaScript rendering is included on every tier, including the $18 a month Lite plan, which is notable since several competitors gate rendered crawls behind a higher tier.
What it does not have is an API or log file analysis. The closest thing on the roadmap is an announced Model Context Protocol server that would let AI tools query audit data directly, but that is still in a waitlist phase, not a shipped feature, and it is about querying your crawl data with AI tools rather than tracking whether AI models cite your brand.
| Feature | Lite $18/month | Pro $42/month | Cloud From $125/month |
|---|---|---|---|
| URLs per audit | 10,000 | 500,000 | Up to 10 million |
| SEO Hints | 100+ | 300+ | 300+ |
| JavaScript crawling | Yes | Yes | Yes |
| Scheduled audits | No | Yes | Yes |
| Data Studio / Looker Studio integration | No | No | Yes |
| Free trial | 14 days | 14 days | 14 days |
Head-to-head feature comparison
| Feature | Seolyzer | Sitebulb |
|---|---|---|
| Real-time server log analysis | Yes | No |
| Crawl + log + GSC cross-analysis | Yes | No |
| JavaScript rendering | Not stated | Yes (all tiers) |
| Prioritized issue recommendations | No (raw diagnostic data, no hints system) | Yes (300+ Hints) |
| Scheduled / recurring crawls | Yes (Professional and above) | Yes (Pro and Cloud) |
| API access | Yes (Professional and above) | No (MCP server in waitlist) |
| BI / Looker Studio connector | Not stated | Yes (Cloud only) |
| AI search visibility tracking | No (confirmed in own FAQ) | No |
| Max crawl scale | Not published; ManoMano operates at millions of URLs via the API | Up to 10 million URLs (Cloud) |
| GDPR-compliant EU hosting | Yes | Not stated |
| Free trial | No (demo only) | Yes (14 days) |
| Starting price | Contact for pricing | $18/mo |
Considering AI Peekaboo alongside Seolyzer and Sitebulb?
Seolyzer says plainly in its own FAQ that it does not track AI Overviews or LLM visibility, and Sitebulb's upcoming MCP server only lets AI tools query your crawl data, it does not tell you whether ChatGPT or Gemini are actually citing your brand. Both are genuinely strong at the job they are built for, crawl and log diagnostics, but neither answers the AI visibility question. AI Peekaboo tracks brand mentions across ChatGPT, Gemini, Perplexity, Google AI Overviews, and Google AI Mode, with a read and write API on every plan from $50 a month and white-label delivery, no sales call required. It is not a replacement for either crawler; it is the layer that sits on top once the technical foundation from Seolyzer or Sitebulb is in place.
Read the AI Peekaboo review →Which should you choose?
SeolyzerSitebulbSeolyzerSitebulbSitebulbSeolyzerThe split here is really about technical maturity and buying process, not raw feature count. Seolyzer rewards teams that already know how to read server logs and are solving crawl budget problems at enterprise scale, but it asks you to go through a demo before you learn the price. Sitebulb is built to teach as it audits, with Hints that explain themselves, transparent pricing, and a trial you can start today. Neither tool tracks AI search visibility, both are explicit about that limitation in their own way.
Bottom line
Book the Seolyzer demo if crawl budget diagnosis from real Googlebot behaviour is an active, named problem, especially at enterprise scale where the log-and-crawl fusion earns its keep. Start the Sitebulb 14-day trial if transparent pricing and an actionable hints system matter more than log file depth, particularly for solo consultants or teams still building technical SEO fluency. Whichever one you pick, neither will tell you if AI Overviews or ChatGPT are citing your brand, that requires pairing it with a dedicated AI visibility tool like AI Peekaboo.
Frequently asked questions
Does Seolyzer track AI Overviews or ChatGPT citations?
No. Seolyzer's own FAQ states it focuses entirely on traditional search crawl health, site crawling, server log analysis, and Google Search Console integration, with no AI search monitoring or LLM visibility tracking of any kind.
Is Sitebulb's MCP server the same thing as AI search visibility tracking?
No, and this is a common mix-up. Sitebulb's announced Model Context Protocol server lets AI tools query your existing crawl audit data, it does not track whether ChatGPT, Gemini, or Perplexity are citing your brand in their answers. It is also still in a waitlist phase rather than a shipped feature.
Can Sitebulb replace a log file analysis tool like Seolyzer?
No. Sitebulb does not offer server log analysis at all, its strength is crawl-based auditing with prioritized Hints and visual reporting. Teams that need to see actual Googlebot crawl behaviour from server logs need Seolyzer or a dedicated log analyzer alongside Sitebulb.
How does Seolyzer's pricing compare to Sitebulb's?
Sitebulb publishes clear tiers starting at $18 a month for Lite, $42 for Pro, and from $125 for Cloud, each with a 14-day free trial. Seolyzer discloses no public pricing on any of its three tiers, Starter, Professional, or Enterprise, and requires a demo before you learn the cost.
Can Seolyzer's API handle millions of internal links?
Yes. ManoMano, one of Seolyzer's named enterprise clients, uses its API specifically to extract millions of internal links for their data science team, which is a concrete signal the API holds up at real scale rather than just in marketing copy.
Which tool is better for a freelancer just starting out in technical SEO?
Sitebulb is the easier starting point, since the Lite plan at $18 a month includes JavaScript rendering and 100+ prioritized Hints with built-in explanations of why each issue matters, which shortens the learning curve. Seolyzer assumes existing familiarity with log analysis and does not offer a self-serve entry point at all.