Bolna alternative
The Bolna alternative built international-first.
Bolna is a capable, India-first voice platform. Callaro offers the same building blocks but is built for global markets — 77+ languages and transparent all-in pricing you see before you scale.
Callaro vs Bolna, side by side
| Bolna | Callaro | |
|---|---|---|
| Pricing model | Platform fee (~$0.02/min) + model + telephony | Transparent, all-in per-minute — shown before you launch |
| Starting cost | All-in ~$0.06/min once components are added | From $0.06/min |
| Setup & fit | India-first; no-code + developer APIs | Self-serve, live in minutes — built for SMB & mid-market |
| Choose your models | Yes — switch per call | Yes — pick STT / LLM / TTS per agent |
| Languages | 10+ Indian + foreign languages | 77+ languages with native pronunciation & normalization packs |
| Takes actions mid-call | Tool calls, RAG, human handoff | Yes — pre-call context API, mid-call HTTP + MCP calls, JMESPath variable mapping |
| Bulk outbound campaigns | Yes — bulk calling | Yes — bulk outbound auto-dialer with retries |
| White-label for partners | Sub-accounts | Yes — full white-label for partners |
| Contracts | Pay-as-you-go / enterprise | No seat fees, no lock-in |
Comparison based on publicly available information as of 2026. Competitor pricing and features may change — check their site for the latest.
Where Bolna fits
Bolna is a Voice AI platform built for India, with a no-code playground and developer APIs. It's feature-rich — bulk campaigns, model switching per call, knowledge bases (RAG), human handoff and sub-accounts — with a low platform fee (around $0.02/min) on top of your model and telephony costs, and deep support for 10+ Indian languages.
Best for: Bolna is a strong choice if your calling is primarily in Indian languages and you want a low-fee, developer-friendly platform tuned for that market.
Why teams choose Callaro
Callaro offers the same building blocks — model choice, bulk campaigns, RAG, human transfer, white-label — but is native beyond India: per-language pronunciation and normalization packs for Arabic, Chinese (zh/ja/ko), Spanish, Portuguese and Indian languages mean the agent sounds local anywhere, not just in Indian vernaculars. You also see the full all-in per-minute cost up front, and get deeper in-call orchestration (pre-call context API, JMESPath variable mapping, runtime API decisioning).
Under the hood
What Callaro actually ships
Not a feature list — these are capabilities built into the product, the ones that decide whether an agent runs outcomes in production.
Best-of-breed models, per agent — no lock-in
Pick the STT, LLM and TTS for each agent (Deepgram, Gemini, ElevenLabs, Soniox, Smallest AI, Sarvam and more) and see the exact cost component by component. No proprietary-model lock-in, no bundled black box.
Truly native in any language — not English-first
Per-language pronunciation & normalization packs (Arabic, Chinese zh/ja/ko, Spanish, Portuguese and per-language Indian packs) plus evidence-based runtime language switching and locale-aware number/script handling — so the agent sounds local in Riyadh, Mumbai, São Paulo or Shanghai, not just accented English.
In-call orchestration that actually decides
Fetch context with a pre-call API, call your HTTP APIs mid-conversation, map responses to variables with JMESPath, chain one tool's output into the next, and let the AI decide in real time which API or tool to call — not a rigid, pre-wired menu tree.
Connect any external MCP server
Register any MCP server (bearer / API-key auth, automatic tool discovery, per-agent tool allowlist) alongside your own HTTP tools — import from cURL or Postman, every tool call logged.
All-in per-minute cost, shown before you launch
The same live per-minute stack you configure in the agent builder — from $0.06/min — with no seat licenses and no surprise analytics fees.
Bulk auto-dialer with timezone intelligence
Outbound campaigns with CSV audiences, timezone-aware scheduling, automatic retries and built-in DNC / do-not-call suppression — a real dialer, not a build-it-yourself loop.
Hybrid voicemail & answering-machine detection
Carrier AMD plus an in-call audio/transcript classifier, with AI-composed voicemail messages — hang up, leave a message, or keep going, configured per agent.
Real barge-in and call screening
Interruption handling with echo-storm detection so the agent knows real speech from its own echo — plus screening that tells a live person from a machine or IVR before it speaks.
Actions mid-call, grounded by your knowledge base
MCP and HTTP tool calls, CRM writebacks, bookings, payment links and ticket creation during the call — answered from a knowledge base (RAG), with every tool call logged.
Cross-call memory + configurable after-call analysis
Repeat callers pick up where they left off; define your own prompts to score, tag and extract from every stereo-recorded call — not just a canned sentiment score.
Bring your own telephony + full white-label
Connect Twilio, Plivo, Telnyx, Vonage, Exotel and more, and resell under your own brand with partner → tenant → sub-account hierarchy, markup and billing.
Ready to switch from Bolna?
See Callaro run a live call end-to-end, then check the exact per-minute cost before you launch.
Book a demo