LogLens vs OnCrawl
OnCrawl ingests logs on a daily batch. In 2026, "your SEO log tool reports yesterday" isn't good enough — attacks happen, deploys break things, and Googlebot isn't going to wait 24 hours for you to find out. LogLens is real-time, and for typical log-analysis needs is 20–80× cheaper.
Daily-batch is not real-time
OnCrawl markets heavily on its crawler and cross-analysis views. But the log-analysis story — what most SEOs actually evaluate it for — runs on a 24-hour cycle. That's a design choice that made sense in 2015 and doesn't anymore.
Yesterday's logs, tomorrow's report
Logs are pulled from S3/FTP on a daily schedule, processed overnight, reported on the morning after. Entry tier (~€49/mo Explorer) exists but most serious deployments run $20,000+/year. No real-time alerts on log events. No bot IP verification against official ranges. No attack-path classifier. AI-crawler detection exists but lacks alias-aware verification (GPTBot, ChatGPT-User and OAI-SearchBot are treated as three separate bots rather than one identity).
Real-time log analysis with SEO signals
Logs stream into LogLens as they happen. Anomalies detected within 5 minutes. Tri-state bot IP verification with AI-crawler alias handling. Attack-path classification catches wp-login / xmlrpc / admin probes out of the box. Sitemap, Search Console and robots.txt integrated and change-tracked. At a fraction of OnCrawl's price.
Feature comparison
| Feature | OnCrawl | LogLens |
|---|---|---|
| Log ingestion | Daily batch (S3/FTP drops) | Real-time stream |
| Time from event to alert | 24+ hours | < 5 minutes |
| Cloudflare / Vercel / CloudFront native integration | S3 / FTP drops only | All first-class |
| AI crawler taxonomy | OpenAI / Gemini / Perplexity | Yes + alias handling |
| Bot IP verification (official ranges) | Not advertised | Yes — tri-state |
| Attack-path classifier | No | Yes |
| JS-rendering SEO crawler | Yes | No (roadmap) |
| Sitemap / GSC integration | Yes | Yes |
| robots.txt change tracking | Partial | Yes |
| Alerting | Yes (Core tier) | Advanced — EMA baselines, enrichment, freeze-during-active |
| BI-style custom dashboards | Yes | Basic |
| Entry price | ~€49/mo Explorer | €X/mo |
| Typical annual cost | $20,000+/yr enterprise | €300 – €3,000/yr |
What a 24-hour delay actually costs you
"Batch is fine" sounds reasonable in the abstract. Here's what it looks like in practice — a Friday afternoon deploy scenario every SEO has lived through.
With OnCrawl's daily-batch logs...
- Fri 16:30 — you deploy a URL restructure with a redirect bug
- Fri 16:30–Mon 09:00 — Googlebot crawls 8,000 broken URLs. Silent.
- Mon 09:00 — weekend's logs finally in the OnCrawl report
- Mon 11:00 — someone reads the report, spots the issue
- Mon 12:00 — fix deployed, 67 hours after the problem started
- By now, Google has started deindexing the affected URLs
With LogLens's real-time stream...
- Fri 16:30 — same deploy, same bug
- Fri 16:32 — first Googlebot 404s land in LogLens, real-time
- Fri 16:36 — error-spike alert fires, specific URLs named
- Fri 16:45 — fix deployed, 15 minutes after the problem started
- No weekend deindexing. No Monday-morning firefighting.
- Total blast window cut from 67 hours to 15 minutes
Real-time beats daily-batch, and costs 20–80× less
LogLens replaces OnCrawl's log-analyzer module with something faster, more accurate, and dramatically cheaper. Real-time alerts with named IPs, bot IP verification OnCrawl doesn't offer, attack-path detection they don't have.