Voice AI Cost Calculator 2026 — Compare 6 Voice Agent Platforms for India

What this calculator shows

For every platform we compute four cost components: platform fee, AI stack (STT + LLM + TTS), telephony (Exotel India ₹0.90/min), and orchestrator. You tune three inputs — calls per month, average minutes per call, and USD/INR rate — and the calculator ranks all platforms by monthly INR cost.

Platforms compared

• SpeakNode + Sarvam AI — free up to 250 agent-min/month, Sarvam LLMs free, best for Malayalam and Indic languages.
• DIY Pipecat + Sarvam AI — same AI cost, self-hosted on Mac + Cloudflare Tunnel, ~150 lines Python.
• DIY Pipecat + Gemini 2.5 Flash Live — native audio-to-audio, lowest AI cost at scale.
• SpeakNode + OpenAI — better English quality, same SpeakNode free tier.
• Bolna PAYG — bundled $0.07/min, fastest no-code deploy.
• ElevenLabs Agents — best voice quality, $5/mo + $0.10/min overage.

Frequently asked questions

How much does a voice AI agent cost per month in India?

For 120 outbound calls/month at 2 minutes average, voice AI costs in India range from roughly ₹250/month (SpeakNode + Sarvam, free tier) to ₹2,500+/month (ElevenLabs Agents). The biggest cost drivers are platform fees, telephony (Exotel ~₹0.90/min), and STT/TTS provider choice.

Which voice AI platform is cheapest for Indian languages?

SpeakNode + Sarvam AI is the lowest-cost option for Malayalam, Hindi, Tamil and other Indic languages. SpeakNode is free up to 250 agent-minutes/month, Sarvam STT is ₹30/hr, and Sarvam's 30B/105B LLMs are completely free.

Do I need Python to build a voice AI agent?

No. SpeakNode, Bolna, and ElevenLabs Agents are no-code platforms — configure the agent in a dashboard and bring API keys. Python is needed only for DIY frameworks like Pipecat.

How is telephony cost calculated?

Telephony is billed for full call duration, not just agent speaking time. Exotel India outbound is ₹0.90/min. 120 calls × 2 min = 240 minutes × ₹0.90 = ₹216/month, separate from the AI platform cost.