Klazify Pricing, Reviews, Pros and Cons: The Complete Breakdown
You need to classify domains at scale - IAB categories, tech stacks, logos, traffic data - and Klazify keeps showing up. But the pricing page raises questions, the review footprint is thin, and you're not sure if the per-call economics actually work at your volume. Here's the full breakdown for 2026.
What Is Klazify?
Klazify is a RESTful API with 10 endpoints - Categorization, Logo, Company, Tech Stack, Traffic, and more - that turns any domain, URL, IP, or email into a structured company profile. You get IAB v3 classification across 620+ categories, brand logos, company intelligence, 150+ technology detections, traffic analytics, and social media links.
One thing worth flagging: with the Clearbit Logo API shutting down, teams that relied on free logo hotlinking are now evaluating authenticated alternatives. Klazify bundles logos with classification, which makes it a natural migration candidate for anyone who was already considering a domain intelligence tool.
30-Second Verdict
Klazify is a strong domain-level intelligence API - not a contact database. It's best for ad targeting, brand safety, content moderation, and enrichment workflows where IAB categorization is the core need. Per-call cost ranges from $0.08 on Starter down to $0.004 on Premium. Trustpilot reviewers give it 4.4/5, with support quality as the dominant praise.
If you need verified B2B emails and direct dials rather than domain classification, Klazify is the wrong tool entirely. That's a different problem - more in the world of B2B lead list tools.
All 7 Monthly Tiers (Plus Enterprise)
The economics shift dramatically as you scale. Overage is a flat ~$0.128 per extra call on every tier - brutal if you're on Starter and accidentally blow past 500 calls.
| Plan | Price/mo | Calls | $/Call | Rate Limit |
|---|---|---|---|---|
| Starter | $39.99 | 500 | $0.080 | 60/min |
| Pro | $89 | 2,000 | $0.045 | 120/min |
| Advanced | $399 | 10,000 | $0.040 | 120/min |
| Plus | $790 | 25,000 | $0.032 | 240/min |
| Business | $1,390 | 50,000 | $0.028 | 240/min |
| Scale | $2,370 | 500,000 | $0.00474 | 240/min |
| Premium | $3,950 | 1M | $0.004 | 240/min |
| Enterprise | From $30K/yr | >1M | Custom | Custom |
Annual billing saves ~17% (2 months free).
Here's the thing: that overage rate punishes poor planning. If you're enriching 12,000 domains/month on the Advanced plan, you pay $399 for the first 10,000 calls at $0.04 each. But the extra 2,000 overage calls cost $256 ($0.128 x 2,000), dragging your effective cost up to $0.054/domain. Always buy the tier above what you think you need.
One clarification that trips people up: older listings on SourceForge and Slashdot still reference IAB v2 with 385 categories. That's outdated. Klazify runs IAB v3 with 620+ categories and confidence scores now.
Domain classification tells you what a company does. But it won't book you a meeting. Prospeo gives you 300M+ verified professional profiles with 98% email accuracy and 125M+ direct dials - refreshed every 7 days, not every 6 weeks.
Stop enriching domains. Start reaching decision-makers.
What Users Actually Say
Trustpilot shows 4.4/5 from 10 reviews. The overwhelming theme is support responsiveness - multiple reviewers mention quick replies and the dev team fixing issues fast. One Plus plan subscriber wrote they're "satisfied with the accuracy of the API and the support." Another highlighted that the team personally helped with CSV batch enrichment and delivered a classified file.
G2 has a single review at 4.5/5 praising ease of use and smooth integration, with "no criticisms" in the dislikes section. We couldn't find high-signal Reddit or community discussion about Klazify, so most real-world feedback comes via review sites and direct support interactions. That's not unusual for a developer-focused API, but it does mean you're relying on a small sample.
Pros and Cons
Pros:
- 10 endpoints bundled in one API - categorization, logos, company data, tech stack, traffic, competitors, social links
- IAB v3 classification with confidence scores and up to three categories per domain
- Batch CSV enrichment with no coding required
- Responsive, hands-on support - the most consistent praise across reviews
Cons:
- Expensive at low volume - $0.08/call on Starter adds up fast
- Thin review footprint makes independent validation difficult
- Logo coverage lags dedicated brand-asset tools - Brandfetch claims 89% coverage vs Klazify's 49%, though that's from Brandfetch's own comparison page, so take it accordingly
- No contact-level data at all - no emails, phone numbers, or direct dials
- Steep price jumps between mid-range tiers
How It Compares on Cost
These tools solve different problems, so the comparison is directional. But per-call economics matter when you're budgeting - especially if you're doing broader marketing data enrichment.
| Tool | Type | $/Call or Record | Notes |
|---|---|---|---|
| Klazify | Domain + enrichment | $0.004-$0.080 | Bundles IAB, logos, tech |
| Context.dev | Brand assets | $0.00038-$0.0016 | Logos/fonts/colors only |
| Hunter.io | Email finding | $0.01-$0.05 | Email finding, domain-focused |
| Prospeo | B2B contacts | ~$0.01/email | 98% email accuracy, verified mobiles |
| ZoomInfo | Enterprise B2B | $0.50-$2.00 | Enterprise pricing, annual contracts |
Context.dev is dramatically cheaper per call, but it only extracts brand assets - no IAB categorization, no company intelligence, no tech stack. If you need the full domain profile, Klazify's bundled approach justifies the premium. If you only need high-quality logos, Context.dev or Brandfetch are better fits.
Let's be honest about the pricing curve: Klazify is genuinely underpriced at the Scale and Premium tiers. Getting bundled IAB + company + tech data for $0.004-$0.005 per call is hard to beat. But below 10,000 calls/month, you're overpaying for what you get. The sweet spot is Advanced and above.
Who Should (and Shouldn't) Use It
Use Klazify if you need IAB categorization for ad targeting, brand safety, or content moderation - or you want domain-level enrichment from a single API. It's also a solid Clearbit Logo API replacement if you want classification bundled in.
Skip Klazify if you need B2B contact data, high-fidelity brand assets like SVG logos with multiple variants, or your volume sits awkwardly between tiers where overage costs eat your budget. We've seen teams burn through their allocation in the first week and then pay overage rates for the rest of the month - not fun. If that’s your situation, you’ll likely get more leverage from outbound lead generation tools and a tighter B2B sales stack.
Paying $0.08/call for domain data but still missing contact info? Prospeo delivers verified emails at ~$0.01 each with 98% accuracy - plus 30+ filters like buyer intent, tech stack, and headcount growth to build targeted lists.
Get the contacts Klazify was never built to find.
FAQ
Does Klazify offer a free trial?
Yes - a 7-day free trial with up to 50 API requests, no credit card required. That's enough to sanity-check categorization on your own domains, but nowhere near enough for a production evaluation. Commit to at least the Starter tier ($39.99/mo for 500 calls) for a real test.
Is Klazify using IAB v2 or v3?
IAB v3 with 620+ categories. Older directory listings on SourceForge and Slashdot still show IAB v2 with 385 categories - ignore them. The current product classifies against the full v3 taxonomy with confidence scores.