Caller Digital vs Vapi

Vapi's platform fee (~$0.05/min) is only the orchestration layer. On top you pay your STT provider, your LLM tokens, your TTS provider and telephony — a realistic composed stack lands at $0.10–$0.20/min. For a 3-minute Indian call that's ₹25–50 in variable cost regardless of whether the customer confirmed, paid or even engaged — plus the engineering salary cost of building and maintaining the stack. Caller Digital charges ₹8–25 per dispositioned outcome in INR, with unconnected attempts free and zero engineering overhead.

Vapi supports whatever languages your composed STT/TTS providers support — Hindi is available through Deepgram, Google or OpenAI models. The catch is accuracy on real Indian telephony: 8 kHz mobile audio, background noise, Hinglish code-switching mid-sentence. Western-trained models degrade 1.6–2.4× on this audio. Caller Digital's speech stack is trained on Indian mobile-network calls across Hindi and 13 regional languages, holding 92–96% Hindi accuracy in production — and you don't have to run the model-evaluation project to find out which combination works.

No. Vapi is regulatory-neutral infrastructure — TCPA, GDPR or TRAI compliance is entirely the customer's responsibility. For Indian outbound calling that means building DND registry scrubbing, DLT principal-entity and template registration, 140-series caller ID provisioning, and DPDP consent trails yourself. Caller Digital ships all of this as platform features: automatic DND scrubbing before every campaign, DLT template management in the UI, and consent linkage on every call record.

If voice AI is your product — you're building a voice agent company or embedding calls deep in your own SaaS — Vapi's flexibility is genuinely valuable and worth the build. If calling is an operations function — you need COD orders verified, EMIs collected, leads qualified — then engineering time spent composing STT/LLM/TTS pipelines, evaluating Indian-language accuracy and building TRAI compliance is time not spent on your actual product. Most Indian ops teams reach production faster and cheaper on a managed platform.

Vapi connects via Twilio, Vonage or bring-your-own SIP trunk. Getting Indian numbers, navigating TRAI's 140-series telemarketing numbering, and integrating Exotel or Plivo requires SIP expertise and carrier relationships. Caller Digital is pre-integrated with Plivo, Exotel, Knowlarity, Ozonetel, Tata Tele and Twilio, and handles Indian number provisioning — including the DLT-registered caller identity — as part of standard onboarding.

Vapi provides developer-grade logs, traces and call artifacts — good raw material, but dashboards, QA workflows and business reporting are yours to build. Caller Digital ships operator-grade analytics out of the box: connect rates, containment, outcome dispositions by campaign, language-level accuracy tracking, promise-to-pay capture for collections, and full call recordings with transcripts stored in India for audit.

Yes. Migrations from Vapi usually mean retiring self-built infrastructure: Caller Digital's team maps your existing assistant prompts and flows into managed use cases, connects the same CRM endpoints, registers DLT templates, and runs a parallel pilot for 2–3 weeks. Teams typically compare cost per resolved contact and engineering hours saved — the pilot data makes the decision straightforward.