What's the cheapest voice AI for Indian call centers in 2026?
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ThinnestAI's flat, all-inclusive rate — ₹2/min on standard voices and ₹2.5/min on premium voices, telephony and the full voice stack included either way, no separate provider bills — starts at the lowest published rate in 2026. Vapi/Retell are USD-priced and end up 3-4× higher for Indian-volume workloads.
Which voice AI has the best Hindi pronunciation?
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For native Hindi pronunciation including code-switching and honorifics, Sarvam Bulbul v3 is the strongest voice we route to. ElevenLabs Multilingual and Cartesia Sonic-3 are competent but sound Western-accented to native Hindi speakers.
Can I replace my entire BPO with voice AI?
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No, and you shouldn't. Voice AI handles tier-1 calls (60-70% of volume — repetitive Q&A, confirmations, reminders) at 1/6th the cost. Humans handle tier-2/3 (complaints, escalations, complex issues) where empathy matters. Total cost drops 50-70%; customer NPS holds within 3 points if routing is right.
What's DLT registration and does my voice AI vendor handle it?
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DLT (Distributed Ledger Technology) is TRAI's mandatory registry for outbound commercial calls in India. Your campaign templates must be pre-registered. Telemarketer registration itself stays your responsibility on ThinnestAI, but the operational rules around it do not: DND / NCPR scrubbing, 9am–9pm IST time-boxing and 140-series support are applied automatically. Gnani and Ozonetel take the registration on as a service; Vapi/Retell don't.
RBI Fair Practices Code — which platforms ship the defaults?
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ThinnestAI ships the operational pieces as platform defaults — TRAI-aligned 9am–9pm IST calling windows, DND / NCPR scrubbing, an AI-disclosure toggle and one-click human escalation. Gnani handles the wider Fair Practices programme via implementation services. Other platforms require manual configuration, which means it can be turned off or drift.
Can I migrate from Ozonetel/Knowlarity to ThinnestAI?
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Yes, but not by carrying your trunk across. The only number import ThinnestAI supports is Plivo, which costs ₹0 — you keep paying Plivo directly. An Ozonetel or Knowlarity SIP trunk cannot be imported; for those you buy an Indian number from us at ₹349/mo and point the traffic at it. Either way you migrate the AI layer, not your CRM or ticketing.
On-premise deployment for compliance-heavy workloads?
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ThinnestAI does not offer on-premise deployment. What it does offer is Indian data residency — everything runs in GCP Mumbai (asia-south1) with DPDPA controls: consent capture, configurable retention with auto-purge, right to erasure, and RBI-compliant localisation of payment data via Razorpay. Gnani offers true on-prem via custom contracts. Vapi/Retell are SaaS-only.
Pricing comparison — voice AI vs human BPO?
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BPO: ₹150-250/hour fully loaded per agent. Voice AI: flat ₹2/min on standard voices × ~2 min avg = ₹4/call all-in. At equivalent call volume, voice AI is 60-80% cheaper. Plus 24/7 capacity, zero attrition, full multilingual coverage.
Integration with Freshdesk / Zoho / Salesforce?
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ThinnestAI: signed outbound webhooks — lead captured, escalation, resolution, call finished, campaign finished — which any of the three can consume. Vapi: same via custom webhook. Retell: same. Gnani: requires implementation services. Yellow: native integration but locked to Yellow's chat platform.
SLA + uptime — what to expect?
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Production SaaS voice AI platforms typically commit 99.9% uptime (~8.8 hours downtime/year). Always read the SLA fine print — most platforms exclude provider outages (OpenAI/Anthropic/Twilio downtime) from their SLA. ThinnestAI does not publish an uptime SLA on this page — ask for it in writing before you sign anything, from us or anyone else.
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