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Head-to-head · Phone Verification Software

2Factor.in OTP API vs Plivo Verify

Updated Sep 2026
Both researched from official sources
4 checks side by side

Higher score 2Factor.in OTP API #4 in Phone Verification Software 7.2/10 Free plan · paid from ₹4,999/mo Free plan✓ 3 of 4 features Visit 2Factor.in

Plivo Verify #10 in Phone Verification Software 6.5/10 Paid ✓ 0 of 4 features Visit Plivo

2Factor.in OTP API leads on 4 checks, Plivo Verify on 0, and 0 are even. Who comes out ahead on the 4 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

Highest score2Factor.in OTP API · 7.2/10
Free planonly 2Factor.in OTP API
Most features2Factor.in OTP API · 3 of 4

2Factor.in OTP API scores higher on our rubric for phone verification software: 7.2 against 6.5 out of 10; our editors rank them #4 and #10.

2Factor.in OTP API offers free plan; Plivo Verify doesn't. 2Factor.in OTP API offers sms verification; Plivo Verify doesn't publish it. 2Factor.in OTP API offers voice verification; Plivo Verify doesn't publish it. 2Factor.in OTP API offers api access; Plivo Verify doesn't publish it.

2Factor.in OTP API is the better fit for teams wanting SMS and voice OTP with a free plan. Plivo Verify is the better fit for mid-market teams needing SMS, voice, and WhatsApp OTPs.

2Factor.in OTP API fits best
Teams wanting SMS and voice OTP with a free plan
Plivo Verify fits best
Mid-market teams needing SMS, voice, and WhatsApp OTPs

Advertiser disclosure: iTechGuides is reader-supported. We may earn a commission when you click some links. It never changes our verdict. How we rank.

Side by side

Show only differences

Feature	2Factor.in OTP API 7.2/10 Visit ↗	Plivo Verify 6.5/10 Visit ↗
At a glance
Editor score	7.2	6.5
Ranking	#4 in Phone Verification Software	#10 in Phone Verification Software
Best for	Teams wanting SMS and voice OTP with a free plan	Mid-market teams needing SMS, voice, and WhatsApp OTPs
Pricing model	Free plan + paid	Paid
Starting price	Not published	Not published
Free plan	✓ (best)	—
Free trial	—	—
Deployment	Cloud	Cloud
Platforms	Web	Web
Support	Email, Live chat, Phone, Tickets, Docs · 24/7	Phone, Tickets, Docs · 24/7
Compliance	ISO 27001, SOC 2	SOC 2, GDPR, HIPAA, PCI DSS, 2FA
Built for	Solo, Small business, Mid-market, Enterprise	Mid-market, Enterprise
Features 2Factor.in OTP API 3/4 · Plivo Verify 0/4
SMS verification	✓ (best)	Not published
Voice verification	✓ (best)	Not published
API access	✓ (best)	Not published
OTP expiry control	Not published	Not published
Specs
Country coverage	190 countries	Not published
Verification methods	Sms and voice	Not published
Our review
Pros	SMS OTP, voice authentication, and automatic fallback routing REST API, SDKs, sandbox testing, webhooks, and delivery receipts Free Starter plan; Growth adds ₹5,000 in messaging credits	Sends OTPs through SMS, voice calls, and WhatsApp Supports session validation, retrieval, and listing Includes delivery callbacks, traffic logs, and SMS-pumping Fraud Shield
Cons	Starter is limited to sandbox access and free test credits Growth begins at ₹4,999/month, apart from usage-based messaging rates Enterprise features such as dedicated routes and SSO are on the Enterprise plan	Usage charges vary by destination country and channel WhatsApp availability may depend on destination and account eligibility Direct brands need a minimum monthly commitment for Verify availability
Our verdict	2Factor.in OTP API provides REST APIs and SDKs for phone verification and customer communications. It suits teams that need SMS OTP delivery and verification, with voice OTP available for fallback or voice authentication. The service runs… Read the review →	Plivo Verify is a cloud API service for sending and validating one-time passwords, aimed at businesses securing registration, login, and other high-risk actions. Developers can send codes over SMS, voice calls, or WhatsApp, subject to… Read the review →

2 2Factor.in OTP APIPhone Verification Software 7.2Free plan · paid from ₹4,999/mo
Plivo VerifyPhone Verification Software 6.5Paid

Strengths and trade-offs

2Factor.in OTP API — where it wins
- SMS OTP, voice authentication, and automatic fallback routing
- REST API, SDKs, sandbox testing, webhooks, and delivery receipts
- Free Starter plan; Growth adds ₹5,000 in messaging credits
Where it doesn't
- Starter is limited to sandbox access and free test credits
- Growth begins at ₹4,999/month, apart from usage-based messaging rates
- Enterprise features such as dedicated routes and SSO are on the Enterprise plan
Plivo Verify — where it wins
- Sends OTPs through SMS, voice calls, and WhatsApp
- Supports session validation, retrieval, and listing
- Includes delivery callbacks, traffic logs, and SMS-pumping Fraud Shield
Where it doesn't
- Usage charges vary by destination country and channel
- WhatsApp availability may depend on destination and account eligibility
- Direct brands need a minimum monthly commitment for Verify availability

2Factor.in OTP API7.2/10 · Free plan · paid from ₹4,999/mo
A phone verification API with SMS, voice fallback, and sandbox testing; paid plans start at ₹4,999/month.
Visit 2Factor.in Full verdict →
Plivo Verify6.5/10 · Paid
A cloud OTP API with three delivery channels, session controls, and SMS-pumping protection.
Visit Plivo Full verdict →

More comparisons

All phone verification software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026

Last updated 28 Sep 2026 · How we research and update