Bolna alternative

Switching from Bolna is easy.

One rupee price for the whole call, billed in 10-second blocks. No parts to assemble.

Bolna’s numbers checked 17 October 2026.

AI agents from ₹1 a minute.¹

Compare
The Frequency console: Agent Studio with four agents in Hinglish, Hindi, Tamil and Gujarati, and a test call in the browser.

Why switch

Why people switch to Frequency.

Everything a phone call in India needs, from one team, priced in rupees.

AI agents

AI agents from ₹1 a minute.¹

Speech recognition, the model and the voice, in one rupee rate. Billed in 10-second blocks, so short calls stay cheap.

Choose your plan

Five languages, live.

Hindi, English, Gujarati, Tamil and Telugu. And the Hinglish in between, mid-sentence.

Every call runs on our own GPUs in India.

The listening, the thinking and the voice are ours: Fourier STT, Gemma 4 26B and Fourier TTS.

One bill, in rupees.

The phone line, the platform, speech recognition, the model and the voice all come from us.

Live the same day.

Build in the sandbox, press Go live, and call today. Every company starts on pay as you go, with no monthly commitment.

Hear it before you decide.

Real lines from Fourier TTS, one request each, unedited. Pick a language and press play.

Hear it

Same callers, different build

Here is how Bolna and Frequency differ.

Bolna builds for Indian callers, just like us. It speaks more Indian languages than we do today, and lets you bring your own models. We're for teams who'd rather not assemble the parts: one rupee price for the whole call, billed in 10-second blocks.

Bolna and we both build for people calling India. The difference is how the minute is put together.

Bolna is an orchestration platform. A minute has three parts: the voice AI, the phone line and Bolna’s platform fee. The voice AI part is a flat rate while you stay on Bolna’s preferred models, which come from other companies. Choose another model and that part is billed at the provider’s rate. You can also bring your own keys.

We run one stack, and every part of it is ours, from the speech recognition to the voice. The model is the open Gemma 4 26B, served on our own GPUs in India, where every call runs. Bolna, by default, runs on US-hosted infrastructure, with India data residency on its enterprise plans.

Hear it.

Real lines from Fourier TTS. Pick one, press play.

Text149 characters

Hi, मैं नेहा बोल रही हूँ Acme Store से। आपका order dispatch हो गया है और Friday तक deliver हो जाएगा। Address में कोई change करना हो तो अभी बता दीजिए।

48 kHz · MonoReady when you are

0:00 / 0:09

voice
Neha
language
Hinglish
speech
0:09
characters
149

Fourier TTS, voice neha, rendered 16 Oct 2026. One request, not edited.

Text119 characters

नमस्ते, मैं श्रुति बोल रही हूँ, दाँतों के क्लिनिक से। कल सुबह डॉक्टर साहब से आपका मिलना तय है। क्या आप समय पर आ पाएँगे?

48 kHz · MonoReady when you are

0:00 / 0:08

voice
Shruti
language
Hindi
speech
0:08
characters
119

Fourier TTS, voice shruti, rendered 16 Oct 2026. One request, not edited.

Text117 characters

નમસ્તે, હું આશુ બોલું છું. તમારી લોનનો હપ્તો આવતા અઠવાડિયે ભરવાનો છે. તમે કહો તો હું અત્યારે જ ભરવાની રીત સમજાવી દઉં.

48 kHz · MonoReady when you are

0:00 / 0:08

voice
Ashu
language
Gujarati
speech
0:08
characters
117

Fourier TTS, voice ashu, rendered 17 Oct 2026. One request, not edited.

Text167 characters

வணக்கம், நான் நேஹா பேசுகிறேன். உங்கள் பார்சல் நாளை மாலைக்குள் வந்து சேரும். அந்த நேரத்தில் நீங்கள் வீட்டில் இல்லையென்றால் சொல்லுங்கள், வேறு நாளுக்கு மாற்றி விடுகிறோம்.

48 kHz · MonoReady when you are

0:00 / 0:10

voice
Neha
language
Tamil
speech
0:10
characters
167

Fourier TTS, voice neha, rendered 17 Oct 2026. One request, not edited.

Text114 characters

నమస్కారం, నేను సమీర్ మాట్లాడుతున్నాను. నిన్న మీరు మా కొత్త ఇళ్ళ గురించి అడిగారు. ఇప్పుడు కొంచెం సేపు మాట్లాడవచ్చా?

48 kHz · MonoReady when you are

0:00 / 0:08

voice
Sameer
language
Telugu
speech
0:08
characters
114

Fourier TTS, voice sameer, rendered 17 Oct 2026. One request, not edited.

Side by side

Here is Bolna beside Frequency.

Every price in rupees², from their own pages and ours.³

Choose your plan.

Choose your plan.

Your price · T1

₹1 a minute¹

₹1,000 for 1,000 minutes

₹1,00,000 / month minimum, credited to your wallet; your usage counts towards it. Our phone line adds ₹0.30 and call insights ₹0.20 a minute, if you want them. In the chart, beside Bolna’s volume price.

Your price · T3

₹3 a minute¹

₹3,000 for 1,000 minutes

₹50,000 / month minimum, credited to your wallet; your usage counts towards it. The phone line and call insights are in the rate. In the chart, beside Bolna’s volume price.

Your price · T5

₹5 a minute¹

₹5,000 for 1,000 minutes

Pay as you go from your wallet. The phone line and call insights are in the rate. In the chart, beside Bolna’s pay-as-you-go price.

One minute of a call, in rupeesYour plan, beside the price it pairs with
One minute of a call, Bolna and Frequency, in rupees
OptionBar₹ a minute
Pay as you goBolna's standard wallet rate, against our T5
Bolna, standard preferred models + the carrier's line, per minute ₹7.60$0.08
Frequency T5 pay as you go, no commitment ₹5all-in
At volumeBolna's biggest top-up, against our T3 and T1
Bolna, $3K top-up preferred models + the carrier's line ₹6.18$0.0651
Frequency T3 ₹50,000/month commitment ₹3all-in
Frequency T1 ₹1,00,000/month commitment + ₹0.30 phone line and ₹0.20 insights, if you want them ₹1₹1.50 with both
How we read these numbers

Dollar prices converted at ₹94.96, the ECB reference rate on 16 October 2026. The rate.

Each bar is one minute as Bolna’s own pages price it, layer by layer, beside ours from our price list. A hatched end is a part of the call their price leaves out and publishes no number for, so it has no length.

  • Bolna, standard: speech, model and voice ₹5.70 ($0.06/min); platform ₹1.90 ($0.02/min platform fee)
  • Bolna, $3K top-up: speech, model and voice ₹4.28 (4.51¢); platform ₹1.90 ($0.02/min platform fee)

Bolna's pricing page shows 6.00¢ as ₹5.52, at its own ₹92 to the dollar; at the ECB rate it is ₹5.70. The $0.02 platform fee is from Bolna's docs, and no Bolna page adds the parts up. The line's per-minute rate is the carrier's, so it has no length here.

From bolna.ai/docs/pricing/preferred-models, bolna.ai/pricing, checked . Ours from our price list.

The chart shows the plan you choose above beside the price it pairs with: our T1 and T3 beside Bolna’s volume price, our T5 beside its pay-as-you-go price. Without that choice, every bar is listed.

What a minute costs, Bolna and Frequency, in their words
DetailBolnaFrequency
Published price per minute 6.00¢ (₹5.52) a minute on the pricing page, $0.06/min in the docs, for speech, model and voice on preferred models the page works out its rupee figure at ₹92 to the dollar bolna.ai T1 ₹1/min with ₹1,00,000/month T3 ₹3/min with ₹50,000/month; T5 ₹5/min pay as you go, phone line and insights included (GST extra)
What else a minute adds $0.02/min platform fee (plus provider charges), and telephony charged per minute by the carrier, billed by Bolna or by your own provider bolna.ai Nothing on T5 and T3: the phone line and insights are inside the rate on T1 they are optional at ₹0.30/min and ₹0.20/min
Lower rates Bigger top-ups lower the rate, to 4.51¢ a minute at $3K the Pilot plan is $500 for 12,000 minutes, billed in 30-second pulses, up to 25 concurrent calls bolna.ai T3 ₹3/min with ₹50,000 a month T1 ₹1/min with ₹1,00,000 a month; 10-second blocks on every tier

What it costs

Bolna’s standard rate for the voice AI part is 6 cents a minute, which is ₹5.70 at the ECB rate. Its page shows ₹5.52. The ₹1.90 platform fee and the line come on top. Bigger top-ups bring the voice AI part down to 4.51¢, about ₹4.28.

Ours is ₹5 a minute on pay as you go, with the line inside. So 1,000 minutes cost ₹5,000 with us, and ₹7,597 on Bolna before the line. When your volume is steady, the volume plan takes it down to ₹1 a minute.

Short calls, short bills

Plenty of calls end in under a minute. Bolna’s Pilot plan bills in 30-second pulses, and we bill every plan in 10-second blocks. A 41-second call is 60 seconds in pulses and 50 in blocks. If nobody picks up, you pay nothing. The pricing guide helps you forecast a month from your own call lengths.

Who runs each part of the call

Bolna is a platform: it runs the call on other companies' speech, model and voice, at a flat rate for its preferred picks. We are the models and the platform.

Who runs each part of the call, Bolna and Frequency
DetailBolnaFrequency
Phone line Third party, your pick Plivo, Exotel, Vobiz or yours bolna.ai Ours Mirai phone line, +91 numbers
Platform Theirs Bolna bolna.ai Ours Our orchestration
Speech recognition Third party, your pick Deepgram, Azure or Sarvam bolna.ai Ours Fourier STT
Language model Third party, your pick OpenAI or Azure models bolna.ai Ours Gemma 4 26B, on our GPUs
Voice Third party, your pick ElevenLabs, Sarvam, Cartesia bolna.ai Ours Fourier TTS

Your own model keys

What’s included, Bolna and Frequency
DetailBolnaFrequency
Your own model keys Bring your own keys for LLM, TTS and ASR providers bolna.ai Agents run on the Frequency stack on every tier

Languages

Languages and voices, Bolna and Frequency
DetailBolnaFrequency
Languages 18 languages in the docs, Indian ones including Hindi, Bengali, Gujarati, Kannada, Malayalam, Marathi, Odia, Punjabi, Tamil and Telugu bolna.ai Hindi, Gujarati, English, Tamil and Telugu, plus Hinglish, in speech recognition and voice Bengali, Marathi and Kannada are coming

Where it runs

Where it runs, Bolna and Frequency
DetailBolnaFrequency
Where it runs US-hosted (AWS us-east-1) by default India (Mumbai) processing on enterprise plans bolna.ai Every call runs on our own GPUs in India

Spot something out of date? Tell us. Six platforms in one table: Voice AI platforms compared.

Which to pick

Which is right for you?

Sometimes it's them. We'll say so.

Choose Bolna if…

  • You need Bengali, Malayalam, Punjabi or Odia now. Bolna's docs list them.
  • You want to bring your own keys for the model, the voice and speech recognition.
  • You need your data kept in India under an enterprise contract.
  • You need to transfer a call to a person today.

Choose Frequency if…

  • You want the phone line inside the rate. Pay as you go is ₹5 a minute, line included.
  • Your calls are short. We bill every plan in 10-second blocks.
  • Your volume is steady. Our agents cost ₹1 a minute on the volume plan.
  • You want one stack for the whole call, with no keys to manage.

What Bolna does that we don’t

More Indian languages, today. Your own model keys. Transferring a call to a person, which we don’t have yet. We also start a new workspace with 5 calls at a time, and raise it when you ask, with no code change.

Moving

Moving your agent across is easy.

Bring the agent you have. Most of it carries across.

  1. Step 1

    Open the sandbox.

    Look around with no sign-up. We ask for an email only when you test a call.

  2. Step 2

    Bring your prompt.

    Paste the prompt you already wrote into Agent Studio, and pick a voice and a language.

  3. Step 3

    Talk to it. Go live.

    Test it in your browser or on your own phone, then go live the same day.

Open the sandbox

Moving an agent

Your prompt and greeting carry over. A script with branches fits a node-based agent, and Agent Studio can draft one from your call recordings. Bulk calls move to campaigns, which dial your list inside the hours you set and pause if the wallet runs out. The India API guide walks through the rest.

Then put both on your own phone, with your real script, and listen.

Questions

Here is what people ask before switching from Bolna.

How do 30-second pulses compare with 10-second blocks?

Take a 41-second call. In 30-second pulses you pay for 60 seconds. In our 10-second blocks you pay for 50. Bolna's pricing page uses pulses on its Pilot plan.

Do you speak Tamil or Telugu?

Yes. Tamil and Telugu are live in our speech recognition and our voice, with Hindi, Gujarati, English and Hinglish. Bengali, Marathi and Kannada are coming. Bolna lists more Indian languages today.

Can I bring my own Plivo or Exotel account?

Plivo, yes. Connect your Indian Plivo number and we add no phone charge. Our docs list Plivo as the carrier for bringing your own number. Or buy a number from us and skip the carrier account.

Is there a pilot plan?

Pay as you go is the pilot. Start at ₹5 a minute with no commitment, and move to a monthly plan once your volume is steady. A confirmed work email gets you ₹200 of credit to begin.

Still deciding? Ask us.

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  1. AI agents from ₹1 a minute: on our volume plan, ₹1,00,000 a month. Pay as you go is ₹5 a minute. Prices exclude GST.

  2. Dollar prices converted at ₹94.96, the ECB reference rate on 16 October 2026. The rate.

  3. Bolna’s figures are from its own pages, linked beside each one and listed under Sources, checked . Ours are from our price list and docs.