Plivo vs Knock Pricing (2026)

How do these two stack up on price? Here's what each one costs, what you get, and where the value sits.

Plivo

$0/mo

Custom

$0/mo

$250/mo

Custom

Which one is cheaper?: One or both use custom pricing, so it depends on your specific needs.
Can I use either one for free?: Both offer free plans, so you can try each without paying. Start with whichever fits your workflow better and upgrade when you hit the limits.
How do they charge?: Both use a usage-based model, so the comparison is straightforward — it comes down to features and limits at each price point.
Which one is a better deal?: Depends on what you need. Plivo: Plivo is playing the low-cost infrastructure card — $0.001/min outbound undercuts Twilio meaningfully and targets cost-sensitive builders who don't need a full CPaaS ecosystem. They're not going after enterprise-first buyers; they're fishing for developers who've done the math on Twilio's bill. Knock: At $250/mo for Starter, Knock is positioning itself as a serious infrastructure layer — not a budget tool, but not absurdly expensive for what it replaces (building in-house notification systems). They're going after product teams at growth-stage companies who've outgrown DIY but aren't ready to negotiate six-figure contracts.

Keep tabs on both.

We'll monitor pricing changes for Plivo and Knock and let you know when something moves.