Klaviyo vs Customer.io
Marketing Automation pricing comparison · 2026
Klaviyo pricing ranges from $0–$150/month, while Customer.io ranges from $100–$1000/month. Klaviyo is typically 96% more affordable, though your actual cost depends on tier and team size.
Klaviyo
Klaviyo is the leading email and SMS marketing platform built specifically for e-commerce
verified 11w ago
$1.2K
$6.5K
Recorded annual contract medians
Klaviyo
median is
$5.3K
less than
Customer.io
· different customer contracts; not a quote
Cheapest
$1.2K
Spread
82%
Estimated license cost
at 25 seats
List price × seats. Click a tier below to lock it.
Email + SMS
$420/yr
year 1 license · flat plan price
Premium
$12K/yr
year 1 license · flat plan price
What buyers actually pay
median, annual
Vendr deal-flow data. The real benchmark, not list price.
↓ Lowest median
Median annual
$1.2K/yr
Vendr · n=88
Median annual
$6.5K/yr
Vendr · n=14
REF · 01
Sources & confidence
Every dollar amount and contract clause below traces back to a sourced fact. We don't manufacture composite scores.
Where this data comes from
Vendr · TrustRadius · Reddit · BBB · official docs
Sources
18 sourced facts
12 hidden-cost · 3 contract · Vendr median · 2 review platforms
Last verified
2mo ago
Confidence
High confidence
Sources
19 sourced facts
13 hidden-cost · 4 contract · Vendr median · 1 review platform
Last verified
3mo ago
Confidence
Medium confidence
REF · 02
Plans at a glance
Every tier per product. Lock one to drive the cost row above and reveal a tier-specific outbound CTA.
Tier ladder
Click a tier to lock the cost row to it. Locking surfaces a tier-specific Visit CTA.
REF · 04
Contract terms
The fine print, surfaced. Green = buyer-friendly. Each clause backed by a quoted source.
Klaviyo
Customer.io
Auto-renewal
Yes
Yes
Cancellation
✓
Can be cancelled anytime based on monthly billing
—
Commitment
✓
Month-to-month with no long-term contract required
1 year (annual contracts required)
Price escalation
No published schedule but users report mid-contract price increases and automatic tier upgrades. February 2025 saw a major billing model change from usage-based to subscriber-based pricing, resulting in 50-400% cost increases for some customers.
Users report prices nearly doubling every ~5 years with no grandfathering; at renewal, rates may triple unless a 2-year contract is signed
Can downgrade
✓
Yes
No
REF · 05
What users say
Aggregated, with sample sizes. We use whichever review platform has data.
User reviews
TrustRadius · Trustpilot · G2
Decide
Get a quote from each vendor
Each link opens the vendor's pricing page in a new tab.
License cost is computed from publicly listed plans (real math, list price × seats).
Median annual cost is from Vendr's deal flow when available — see source badges.
Hidden costs and contract terms each cite their own sources. We do not invent composite scores.
VS
Klaviyo and Customer.io both operate in the marketing automation category. This page compares their list pricing.
Plan-by-Plan Pricing
| Plan | Klaviyo | Customer.io |
|---|---|---|
| Free | Free /month | $100 /month |
| $20 /month | $1K /month | |
| Email + SMS | $35 /month | Custom |
| Enterprise | Custom | — |
Cost at Scale
Total cost of ownership — licenses, implementation, and hidden costs included.
Klaviyo
5 scenarios$60/month ($720/year)
Small Shopify Store (2,500 Contacts)
Email plan at 2,500 contact tier with 25,000 monthly sends included
$435/month ($5,220/year)
Mid-Size E-commerce Brand (25,000 Contacts)
Email + SMS plan at 25,000 contact tier with 250,000 email sends and 28,125 SMS credits monthly
$20
Small E-commerce Store (1,000 contacts, 5,000 emails/month)
$35/month ($240-$420 annually) on Email or Email + SMS plan
Customer.io
4 scenarios$145/month
Growing SaaS (10,000 Profiles)
Essentials base $100/month + $45 for 5,000 additional profiles at $0.009 each
$1,000
E-commerce App (50,000 Profiles)
+/month - Premium tier with custom volume for 50,000 profiles across multiple object types, plus SMS costs
$425/month
Small Business (~5,000 Contacts)
Market Intelligence
Klaviyo
- Median annual cost
- $1,188
- Based on
- 88 deals
Customer.io
- Median annual cost
- $6,500
- Based on
- 14 deals
Contract Terms
| Term | Klaviyo | Customer.io |
|---|---|---|
| Auto-renewal | Yes | Yes |
| Cancellation | Can be cancelled anytime based on monthly billing | — |
| Minimum commitment | Month-to-month with no long-term contract required | 1 year (annual contracts required) |
| Price escalation | No published schedule but users report mid-contract price increases and automatic tier upgrades. February 2025 saw a major billing model change from usage-based to subscriber-based pricing, resulting in 50-400% cost increases for some customers. | Users report prices nearly doubling every ~5 years with no grandfathering; at renewal, rates may triple unless a 2-year contract is signed |
| Can downgrade | Yes | No |