Dollu Voice API
Dollu Voice API: A broad programmable calling stack, but OTP verification is not its stated focus. Ranked #22 of 24 in Phone Verification Software by our editors (6.2/10); pricing: Pricing on request; best for teams needing voice infrastructure beyond OTP.
At a glance
- Editor score6.2 / 10
- PricingPricing on request
- Best forTeams needing voice infrastructure beyond OTP
- Free planNo
- Founded2016 · Noida, India
- Facts checked23 Sep 2026
Where it wins
- Inbound and outbound calling with IVR, transfers, conferencing and bridging
- SIP connectivity for PBX, contact-centre and dialler systems
- Recording, transcription and bidirectional WebSocket media streaming
Where it doesn't
- Production pricing is usage-based and requires contacting sales
- OTP verification is not positioned as a core capability
- Deployment is API and cloud focused, with ticket-based support
Our verdict on Dollu Voice API
Dollu Voice API is a cloud service for developers building programmable calling into applications. Its REST API and SDKs handle outbound calls and inbound events through webhooks, while call-control actions cover IVR, prompts, transfers, bridging and conferencing. Teams can provision local, mobile and toll-free numbers, record calls with asynchronous transcription, and stream media over bidirectional WebSocket connections. The product is aimed at voice-agent builders, contact centres, platforms and SaaS products across small, mid-market and enterprise environments.
Production pricing is usage-based, with rates supplied through a contact-sales process rather than a published amount. A free sandbox supports development and testing, but it is separate from a production free plan. Integration breadth is a central strength: SIP interconnects can link existing PBX, contact-centre and dialler systems, and SDKs are available for Node.js, Python, Java, Go, PHP and .NET. Signed webhooks, idempotent requests and call-event logs provide implementation controls for event-driven applications.
Dollu’s standout capability is the combination of programmable call control, speech services and live media handling. Speech-to-text and text-to-speech support 40+ languages, while recording and asynchronous transcription suit workflows that need searchable call output. Support is available 24/7 through tickets. Choose Dollu when your project needs full voice infrastructure, SIP connectivity or streaming beyond basic code delivery. Teams seeking a focused phone-verification product should compare alternatives, because OTP verification is not positioned as a core capability here.
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Dollu Voice API pricing
Dollu Voice API fact sheet
| Free plan | No |
|---|---|
| Paid from | Not verified |
| SMS verification | Not verified |
| Voice verification | Not verified |
| Country coverage | Not verified |
| Verification methods | Not verified |
| API access | Not verified |
| OTP expiry control | Not verified |
| Deployment | Cloud |
| Support | Tickets · 24/7 |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Pricing | Pricing on request (source) |
| Website | dollu.com |
| Facts checked | 23 Sep 2026 |
Alternatives to Dollu Voice API
- Twilio VerifyA developer-focused verification API with broad channels and usage-based pricing.9.3
- Infobip 2FAA multichannel OTP API for teams building verification into customer journeys.9.1
- Sinch Verification APIFlexible verification API with four methods and native mobile SDKs.9.0
See all Dollu Voice API alternatives →
Also Ranked In
Dollu Voice API is ranked in 2 of our directories.
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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