Smallest AI alternatives.
Voice agent platforms, priced and compared.

1. 1

   Kallix

   Best for indian teams that want calls, rules and follow-ups handled in one rupee rate

   Price: ₹4.80 a minute plus GST, billed in 30-second pulses, covering voice, speech recognition, the language model and Indian call minutes. Two concurrent calls included, then ₹999 a month each. Numbers from ₹499 a month. ₹500 in free credits.

   Kallix is a voice AI platform for India's phone-first businesses. The agent studio drafts an agent from a plain-words brief, a knowledge base builds from your website URL, and test suites check each version before it goes live. Campaigns dial Indian numbers inside your IST calling windows, after a DND check.

   Good

   • One rupee rate with Indian call minutes included
   • Human-like voice that says it's an AI from the first line
   • Recording, transcript, outcome and sentiment on every call

   Watch for

   • No bring-your-own carrier or SIP trunk: numbers come through Vobiz
   • No on-premise option, and no SOC 2 or ISO 27001 certification
   • Languages named as Hindi, English, Hinglish and more, with no full list

2. 2

   ElevenLabs

   Best for teams that want a voice-first vendor with a broad language range

   Price: Plans from free (15 call minutes) to $990 a month (12,375 minutes); Pro is $99 a month with 1,238 minutes. Extra minutes $0.08. Language model usage billed at cost. Telephony included.

   Website

   ElevenLabs sells ElevenLabs Agents for voice, chat and email, built on its speech technology. You can build without code or with SDKs and APIs, bring your own language model, and run simulations before launch. Its agents page lists 90+ languages.

   Good

   • 90+ languages, with switching mid-conversation
   • Telephony included on every plan
   • Data residency in the US, EU or India

   Watch for

   • Plan tiers with included minutes, and language model usage billed on top
   • Burst calls above your concurrency limit cost double
   • Indian languages aren't named on its agents page

3. 3

   Sarvam AI

   Best for teams that want Indian-language models with agents priced in rupees

   Price: Pay as you go: ₹3.50 a minute, falling to ₹3.00 on Business, plus GST, with models included. Telephony at ₹0.20 per 30-second pulse and numbers at ₹59 per 30 days are extra. Enterprise from 2 lakh minutes a month.

   Website

   Sarvam also builds its own speech and language models, trained for Indian languages, and sells voice agents built in Genie, its no-code builder. Models are included in the minute rate, and you can rent a number or bring your own telephony provider.

   Good

   • 11 Indian languages plus English named, with code-mixed speech
   • Rupee pricing with models included
   • Bring your own provider, such as Exotel, Plivo or Twilio

   Watch for

   • Four concurrent calls on pay as you go
   • Telephony and numbers billed separately
   • WhatsApp campaigns only on Enterprise

4. 4

   Retell AI

   Best for teams that want an agent platform with mature testing tools

   Price: $0.07 to $0.31 a minute for voice agents on pay as you go, depending on model and voice. $10 in free credits. 20 concurrent calls free, then $8 a month each. Enterprise pricing on request.

   Website

   Retell is a voice agent platform with a drag-and-drop canvas, APIs and SDKs, and tools that simulate scenarios and turn real calls into regression tests. It works with any phone system over SIP trunking.

   Good

   • 20 concurrent calls included, with more at $8 a month each
   • Regression tests from real production calls
   • States HIPAA, SOC 2 Type II, GDPR and ISO 27001 compliance

   Watch for

   • Total cost depends on model, voice and add-ons
   • Indian languages not named on the pages we checked

5. 5

   Vapi

   Best for developers who want to mix providers, including speech models of their choice

   Price: $0.05 a minute hosting fee, with speech, model, voice and telephony providers billed at cost. Vapi's own estimate for 1,000 minutes is $82 to $129 a month. $5 in free credits. Extra lines $10 a month each.

   Website

   Vapi is API-native: you choose the speech, model, voice and telephony providers and Vapi hosts the agent. It suits developers who want to swap providers freely and manage costs at each layer.

   Good

   • Any mix of model and telephony providers
   • Provider costs passed through with no markup
   • Extra concurrency available at $10 a line a month

   Watch for

   • Several provider bills behind each call
   • HIPAA is a $2,000-a-month add-on
   • No Indian languages named on the pages we checked

6. 6

   Bolna AI

   Best for indian developer teams that want model choice and Indian languages

   Price: From $0.06 a minute (₹5.52 as Bolna shows it) on pay as you go, with speech, model and voice included on its bundled models. Telephony and a platform fee are added per minute. $5 in free credits.

   Website

   Bolna is a Y Combinator-backed Indian platform with a no-code playground, developer APIs and 20+ speech, language and voice models to choose from. It supports bringing your own keys and lists 10+ Indian languages, including Hinglish, Hindi, Tamil and Telugu.

   Good

   • Bring your own keys for each model layer
   • 10+ Indian languages, Hinglish included
   • Data residency in India or the US

   Watch for

   • Wallet priced in US dollars
   • Telephony and a platform fee added per minute
   • No certifications named on the pages we checked

Want the detail on one pair? Kallix vs Smallest AI, row by row.