Corsair vs ZelNum

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Corsair compared with ZelNum
Detail	Corsair	ZelNum
What it does	Open source integration layer for AI agents with secure, multi-tenant support	Phone number, carrier, and messaging app verification platform for contact list cleaning and fraud review
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	EE
Pricing model	Freemium	Paid
Pricing	Hobby: $0/mo with up to 50 connections, 100k webhook events, unlimited managed permissions/auth pages, up to 3 team members, and Discord community support. Pro: $200/mo with unlimited connections, unlimited webhook events, unlimited managed permissions/auth pages, unlimited team members, and Slack s	Pay-as-you-go prepaid credits. WhatsApp: $0.5 per 10,000 lookups (bulk) or $0.008 per lookup (realtime). Telegram: $1.5 per 10,000 lookups (bulk) or $0.012 per lookup (realtime). HLR Lookup: $4 per 10,000 lookups. Carrier Lookup: $4 per 10,000 lookups. No subscription, minimum order 500–2,000 depend
Key features	OAuth and multi-tenant credential management Permissions system with approval workflows Webhooks and polling for data synchronization Multiple integration connectors Self-hosted and cloud-hosted options Managed authentication pages Agent-safe credential handling API caching per tenant Custom integration scaffolding Community-contributed integrations	Bulk CSV/TXT file upload and processing VoIP and disposable number detection Real-time single lookups and batch API jobs
What makes it different	Fully open source to avoid vendor lock-in Credentials never stored in Corsair's database Free self-hosted option with no per-seat pricing Handles token refresh and API deprecations automatically Works with or without AI agents	45 verification tools in one workflow covering phone, carrier, messaging apps, and social platforms Global coverage across international phone datasets and carrier networks Pay-as-you-go credits with no subscription, minimum commitment, or recurring fees Scalable from free single lookups to bulk API workflows and high-volume batch jobs
Community votes	0	0
DR (Domain Rating by Ahrefs)	34 +1 (up) since last check	18 +1 (up) since last check
Trust Flow (Majestic)	8	15
Citation Flow (Majestic)	34	29
Referring domains (Majestic)	203	19

5 details filled in for both companies.

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