KX21 vs Thread Otter

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

KX21 compared with Thread Otter
Detail	KX21	Thread Otter
What it does	The Platform People	Not given
Stage	Not given	Not given
Founded	Not given	Not given
Based in	US	Not given
Pricing model	Not given	Free trial
Pricing	Kapture: $0.001 per recording, $0.005 per completed form, $15/month for unlimited e-signatures, 2,000 free tokens to start. Komms: $0.08 per minute including phone call, $15/month per phone number, 625 free minutes to start. KontrolX: 50% off current bill, base rate from $2,500/month, no per-lead fe	$99 per month for one teammate and one project with full autopilot across all four channels. Add teammates at $99/month each. Add projects at $39/month each. Annual billing offers 2 months free.
Key features	Lead recording and session replay at $0.001 per recording E-signatures with $15/month unlimited access Form building and lead capture with Kapture SIP routing on customer-owned carrier 100+ MCP tools for Claude and AI clients	Monitors Reddit, X, LinkedIn, and Bluesky for buyer intent signals Direct message automation for warm leads Native post creation per platform without cross-posting Per-account pacing and daily caps to prevent bans Reply-to-customer attribution and receipt tracking Google Search Console integration for long-term reach measurement Approve-first mode for review before sending Do-not-say rules and sameness guard to prevent generic replies Chrome extension for sending from your own logged-in accounts
What makes it different	Transparent pricing with no vendor markup: phone, storage and data companies bill customers directly 50% savings on lead routing and call tracking compared to current vendors Customer data ownership with no export fees or seat charges Built for AI with 100+ MCP tools for Claude All features available in every plan with usage-based pricing only	Full attribution from thread reply to customer signup, not just vanity metrics Genuine pacing and account safety designed to prevent bans Replies powered by your authentic voice, not a preset or generic AI Costs $99/month versus $10k+ for a growth hire
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	5 +1 (up) since last check	29 no change since last check
Trust Flow (Majestic)	6	2
Citation Flow (Majestic)	26	28
Referring domains (Majestic)	15	50

3 details filled in for both companies.

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