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Vanie AI vs Retell AI: which AI voice platform fits?
Retell AI is a clean voice-agent platform optimised for English calls with Deepgram STT. Vanie AI is built for multilingual Indian operations: 8 Indian languages with native voices, per-tenant call recording on Cloudinary, Gemini post-call enrichment, and TRAI/DPDP compliance baked into the call gate.
Quick comparison
| Feature | Vanie AI | Retell AI |
|---|---|---|
| Indian languages | 8 native (Hindi, Tamil, Telugu, Marathi, Bengali, Gujarati, Kannada, Malayalam) | English primary; limited multilingual support |
| Speech-to-text | Gemini STT — India-tuned, code-switch aware | Deepgram (English-strong; weaker on Indian accents) |
| Indian carrier SIP | Jio, Vi, Airtel, Tata, Servetel direct | Twilio-only by default |
| Real-time agent runtime | Gemini Live bridge, sub-second turn | Custom turn-taking (LLM-agnostic) |
| Per-tenant call recording | Cloudinary, workspace-scoped retention | S3 or Retell-hosted, global defaults |
| Post-call enrichment | Gemini — structured fields, summary, sentiment | LLM-based summary only |
| TRAI / DPDP compliance gate | Built-in (time window, NCPR DND, preamble) | Not built in |
| INR billing via Razorpay | Native | USD only |
| Knowledge base + tools | Built-in | Built-in |
| Inbound + outbound | Both in one agent — 24/7 inbound + outbound campaigns | Both supported |
| Calendar booking | Native Google Calendar, Outlook / Microsoft 365, and Cal.com — books mid-call | Via custom functions / your own integration |
| Post-call analytics | Dashboard — per-call cost, duration, sentiment, full transcripts | Call logs + dashboard |
| BYO key / number | BYO Gemini key (flat monthly access fee) + BYO SIP / Twilio / Exotel | BYO LLM/STT/TTS keys + Twilio (required) |
| Webhooks + transcripts | Streaming + per-call event webhooks | Streaming + per-call event webhooks |
| Free tier | 500 credits on signup | $10 free credit |
Where Vanie AI is stronger
- 8 Indian languages with native voices — not just English with a Hindi accent. STT is code-switch aware (Hinglish, Tanglish) because Gemini STT is trained on those mixes; Retell with Deepgram drops accuracy hard on Indian English and Indian-language input.
- Per-tenant Cloudinary call recording with workspace-scoped retention windows and a right-to-erasure endpoint — built for DPDP. Retell defaults to global S3 with platform-wide retention.
- Post-call enrichment via Gemini returns structured fields, a summary, and sentiment on every call — not just a transcript — written into the built-in CRM (Customer 360). That feeds CRM updates without extra LLM passes.
- TRAI compliance gate (10am–9pm window, NCPR DND scrub, recording preamble, T&C acceptance) is enforced before the carrier even rings. Retell expects you to handle that yourself.
- Native Google Calendar, Outlook / Microsoft 365, and Cal.com booking — the agent checks live availability and books the slot during the call. On Retell you wire a calendar yourself through custom functions.
- Bring-your-own-Gemini-key billing: pay a flat monthly platform access fee instead of per-minute platform credits, which lowers the effective per-minute cost at volume. You can also bring your own SIP trunk, Twilio, or Exotel account.
Where Retell AI is stronger
- Retell AI is excellent for English-only US/UK calling — Deepgram English is fast and accurate, and Retell ships clean abstractions over Twilio.
- If you already standardise on Twilio in the US and never need Indian carrier SIP or Indian-language voices, Retell is a perfectly reasonable choice and may ship faster for that narrow use case.
Pricing comparison
| Metric | Vanie AI | Retell AI |
|---|---|---|
| Free tier | 500 credits, no card | $10 free credit |
| Entry plan | ₹999/mo Starter — 1,000 credits (+18% GST) | Pay-as-you-go |
| Per-minute voice agent | ~₹5.5/min base (5 call + 0.5 recording); ~₹7.5/min with optional post-call extraction | ~$0.07–0.31/min (plan + LLM + TTS) |
| Provider passthrough fees | None — Gemini bundled | LLM + TTS + Deepgram passed through |
| Enterprise | Custom INR, India invoicing | Custom USD |
See the full plan grid on the pricing page.
Who should choose which
Choose Vanie AIif …
- 8 Indian languages with native voices — not just English with a Hindi accent. STT is code-switch aware (Hinglish, Tanglish) because Gemini STT is trained on those mixes; Retell with Deepgram drops accuracy hard on Indian English and Indian-language input.
- Per-tenant Cloudinary call recording with workspace-scoped retention windows and a right-to-erasure endpoint — built for DPDP. Retell defaults to global S3 with platform-wide retention.
- Post-call enrichment via Gemini returns structured fields, a summary, and sentiment on every call — not just a transcript — written into the built-in CRM (Customer 360). That feeds CRM updates without extra LLM passes.
- TRAI compliance gate (10am–9pm window, NCPR DND scrub, recording preamble, T&C acceptance) is enforced before the carrier even rings. Retell expects you to handle that yourself.
- Native Google Calendar, Outlook / Microsoft 365, and Cal.com booking — the agent checks live availability and books the slot during the call. On Retell you wire a calendar yourself through custom functions.
- Bring-your-own-Gemini-key billing: pay a flat monthly platform access fee instead of per-minute platform credits, which lowers the effective per-minute cost at volume. You can also bring your own SIP trunk, Twilio, or Exotel account.
Choose Retell AIif …
- Retell AI is excellent for English-only US/UK calling — Deepgram English is fast and accurate, and Retell ships clean abstractions over Twilio.
- If you already standardise on Twilio in the US and never need Indian carrier SIP or Indian-language voices, Retell is a perfectly reasonable choice and may ship faster for that narrow use case.
FAQ
- Does Retell AI support Hindi or other Indian languages?
- Retell is built around English voice agents using Deepgram STT and English-first TTS providers. There is some limited multilingual support, but native Indian-language coverage — including Tamil, Telugu, Marathi, Bengali, and the rest — is not its strength. Vanie AI ships 8 Indian languages with native voices.
- Why is Gemini STT better than Deepgram for Indian use cases?
- Indian customer calls are routinely code-switched: Hinglish, Tanglish, Tamil mixed with English brand names. Gemini STT handles those mixes natively because the training data reflects them; Deepgram English drops accuracy on Indian accents and breaks on mid-sentence language switches. For domestic Indian operations, that gap is enormous.
- How does per-tenant call recording on Cloudinary work?
- Every recording is written to Cloudinary scoped to the workspace, with a retention window the workspace controls. Past that window, recordings are purged. A right-to-erasure endpoint deletes a specific caller on request with an audit log, satisfying DPDP requirements.
- What does "post-call enrichment via Gemini" actually return?
- A structured payload on every completed call: extracted structured fields, a one-paragraph summary, and overall sentiment, written into the built-in CRM (Customer 360). It also lands as an HMAC-signed webhook event — so CRM updates happen without you running another LLM pass.
- Can Retell AI place calls through Indian carriers?
- Retell can technically route via Twilio India, but it does not have managed SIP integrations with Jio, Vi, Airtel, Tata, or Servetel. Vanie AI has direct SIP into all five, plus Exotel as a first-class option, which lowers carrier latency and improves answer rates on Indian numbers.
- Is Vanie AI cheaper than Retell AI?
- For Indian per-minute economics, almost always. Vanie AI bundles STT/TTS/LLM into a flat rate: 5.5 credits/min base (5 call + 0.5 recording), or 7.5 with optional post-call extraction (~₹7.5/min ≈ $0.09). Retell unbundles each provider, so a like-for-like build adds Deepgram, your TTS provider, your LLM tier, and the Retell platform fee — typically $0.07–0.31/min before Twilio India termination.
- Which calendars can the AI voice agent book into?
- Natively into Google Calendar, Outlook / Microsoft 365, and Cal.com — the agent checks live availability and confirms the booking during the call, then writes it back. On Retell, calendar booking is something you build and host yourself through custom functions.
- Can I bring my own Gemini key, number, or carrier?
- Yes. On the BYO plan you connect your own Gemini API key and pay a flat monthly platform access fee instead of per-minute platform credits — which lowers the effective per-minute cost at volume. You can also bring your own SIP trunk, Twilio, or Exotel account and keep your existing numbers.
- Is there a free trial?
- Yes — 500 credits on signup, no card. Roughly 65 minutes of voice agent time.