Sarvam AI alternative

Listen to Mira before you choose Sarvam.

Built for calls in Hindi, Gujarati, Tamil, Telugu, English or a mix, on our own models and GPUs in India.

Sarvam’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.

Fourier TTS

₹1.80 per 1,000 characters.

And ₹18 an hour to transcribe a recorded call. Both from one rupee wallet.

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.

Ready for the phone line.

Ask for 8 kHz μ-law or A-law and send it straight down the line. Or take 48 kHz PCM for everything else.

Phone agents, on the same key.

When you want the whole call, the same key and wallet run our voice agents.

Hear it before you decide.

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

Hear it

Two different bets

Here is how Sarvam and Frequency differ.

Sarvam is a strong choice if you need many Indian languages today. If your calls are in Hindi, Gujarati, Tamil, Telugu, English or a mix, we're built for exactly that, on our own models and GPUs in India. Our voice, on its own, is ₹1.80 per 1,000 characters.

Sarvam is going wide: speech, text and documents across 22 Indian languages, plus its own voice-agent platform.

We’re going deep on the call: Hindi, Gujarati, Tamil, Telugu, English and the mix in between, on a phone line, at a price that works for a business making thousands of calls a day. The voice, the speech recognition and the language model are ours. The model is the open Gemma 4 26B, served on our own GPUs in India, where every call runs.

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 Sarvam beside Frequency.

Every price in rupees, from their own pages and ours.²

AgentsModels

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 Sarvam’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 Sarvam’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 Sarvam’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, Sarvam AI and Frequency, in rupees
OptionBar₹ a minute
Pay as you goSarvam pay as you go, against our T5
Sarvam Voice Agents on Sarvam's own line ₹3.90
Frequency T5 pay as you go, no commitment ₹5all-in
On a monthly planSarvam's plans against our T3 and T1
Sarvam Pro ₹3.65
Sarvam Growth ₹3.55
Sarvam Business coming soon ₹3.40
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

Each bar is one minute as Sarvam’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.

  • Sarvam Voice Agents: speech, model, voice and platform ₹3.50; phone line ₹0.40 (₹0.20 per 30-second pulse)
  • Sarvam Pro: agent ₹3.25; phone line ₹0.40 (₹0.20 per 30-second pulse)
  • Sarvam Growth: agent ₹3.15; phone line ₹0.40 (₹0.20 per 30-second pulse)
  • Sarvam Business: agent ₹3; phone line ₹0.40 (₹0.20 per 30-second pulse)

Sarvam bills agent minutes in 60-second pulses and its own line in 30-second pulses, so a full minute on its line is two pulses, ₹0.40. With your own carrier, Sarvam adds nothing for the line and the carrier bills you. Its two pricing pages give different monthly fees for the same plans.

From sarvam.ai/products/voice-agents/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 Sarvam’s volume price, our T5 beside its pay-as-you-go price. Without that choice, every bar is listed.

What a minute costs, Sarvam AI and Frequency, in their words
DetailSarvam AIFrequency
Voice agents, published price per minute Sarvam Voice Agents ₹3.50 pay as you go, ₹3.25 Pro, ₹3.15 Growth, ₹3.00 Business (coming soon), in 60-second pulses sarvam.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
The agent's phone line Extra: Sarvam telephony (Vobiz) ₹0.20 per 30-second pulse, numbers ₹59 per 30 days, or your own carrier at no Sarvam charge one docs page says telephony is included sarvam.ai Included on T5 and T3 ₹0.30/min on T1; your own Plivo number carries no Mirai telco charge

What an agent costs

Both of us price in rupees, so the comparison is simple. Sarvam’s phone agents start at ₹3.50 a minute, and its phone line adds ₹0.20 every 30 seconds. Ours is ₹1 a minute on the volume plan, and ₹5 pay as you go with the line included. If you call a lot, ₹1 is the number that matters.

Who runs each part of the call

Like us, Sarvam runs its own speech, model and voice, with an agent platform on top. The difference is the minute: Sarvam's pricing page bills the phone line on top, and ours includes it.

Who runs each part of the call, Sarvam AI and Frequency
DetailSarvam AIFrequency
Phone line Theirs Sarvam's, or yours sarvam.ai Ours Mirai phone line, +91 numbers
Platform Theirs Sarvam Voice Agents sarvam.ai Ours Our orchestration
Speech recognition Theirs Saaras v4 docs.sarvam.ai Ours Fourier STT
Language model Theirs Sarvam 105B docs.sarvam.ai Ours Gemma 4 26B, on our GPUs
Voice Theirs Bulbul v3 and v4 docs.sarvam.ai Ours Fourier TTS

Models: price

What speech costs

For 10 lakh characters of speech, Fourier TTS costs ₹1,800. Bulbul V4 Flash costs ₹2,000 pay as you go, or ₹1,700 on Sarvam’s monthly plans, which is a little below us. Bulbul V3 costs ₹3,000.

Text to speech, pay as you go, ₹ per 10 lakh characters
Text to speech, pay as you go, Sarvam AI and Frequency, in rupees per 10 lakh characters
OptionBar₹ per 10 lakh characters
Bulbul V4 Flash ₹2,000
Bulbul V3 ₹3,000
Fourier TTS every plan, from the first character ₹1,800
How we read these numbers
  • Bulbul V4 Flash: “₹2.00”, sarvam.ai
  • Bulbul V3: “₹3.00”, sarvam.ai
  • Fourier TTS: 1.80 rupees per 1,000 characters, on every plan, from our price list.

On Growth and Business, V4 Flash is ₹1,700 and V3 ₹2,700 per 10 lakh characters. Ours stays ₹1,800.

From sarvam.ai/api-pricing, checked . Ours from our price list.

Speech to text, ₹ per hour of audio
Speech to text, Sarvam AI and Frequency, in rupees per hour of audio
OptionBar₹ per hour of audio
Sarvam, pay as you go real-time or batch ₹29.40
Fourier Transcribe recorded calls, speaker labels included ₹18
How we read these numbers
  • Sarvam, pay as you go: “₹0.49/min”, sarvam.ai
  • Fourier Transcribe: 18 rupees an hour of recorded audio, speaker labels included, from our price list.

₹0.49 a minute × 60. Sarvam's docs pricing page lists ₹30 an hour instead.

From sarvam.ai/api-pricing, checked . Ours from our price list.

What speech costs, Sarvam AI and Frequency, in their words
DetailSarvam AIFrequency
Text to speech, pay as you go, per 1,000 characters Bulbul V4 Flash ₹2.00 Bulbul V3 ₹3.00 sarvam.ai Fourier TTS ₹1.80 (GST extra)
Text to speech on a plan, per 1,000 characters Bulbul V4 Flash ₹1.70 and Bulbul V3 ₹2.70 on Growth and Business ₹1.85 and ₹2.85 on Pro sarvam.ai ₹1.80 on Business (₹50,000/month), the same rate as pay as you go
Speech to text ₹0.49/min real-time or batch, pay as you go, on the pricing page the docs pricing page lists ₹30 an hour sarvam.ai Recorded calls ₹18 an hour of audio, speaker labels included streaming recognition as a standalone API in private preview

How it sounds

What listeners say

Voice Arena plays two voices reading the same line and asks people to pick one, without telling them which is which. On its Hindi board, Fourier TTS sits above Bulbul V3 overall, by 993 to 959. We lead in everyday conversation and in education. Bulbul leads in customer support and in media. Bulbul V4 Flash isn’t on the board yet.

And speech to text

On RinggAI’s public test of 10,000 Hindi recordings, Fourier STT had the lowest error rate of the five systems tested, at 9.12%. Sarvam’s came in at 12.83%. That test uses read speech, not phone calls, and we’re not the best on every dataset. Test with your own recordings.

Voice Arena · Hindi TTSElo · 16 October 2026 · 19 models
Voice Arena · Hindi TTS: blind listener votes, Bradley–Terry Elo
RankModelEloVotes
#11Fourier TTS993440
#14Sarvam Bulbul V39593,882

Blind listener votes. Bulbul V3 is narrowly ahead in customer support (984 against 971) and media & entertainment (967 against 956). The board on Voice Arena.

Languages

Languages and voices, Sarvam AI and Frequency
DetailSarvam AIFrequency
Languages Agents: 11 Indian languages and English Bulbul V4 Flash covers Hindi, English, English–Hindi and seven more Indian languages; Saaras transcribes 23 docs.sarvam.ai Hindi, Gujarati, English, Tamil and Telugu, plus Hinglish, in speech recognition and voice Bengali, Marathi and Kannada are coming

API shape

Getting started, Sarvam AI and Frequency
DetailSarvam AIFrequency
API shape Sarvam's own REST, HTTP streaming and WebSocket APIs, with Python and JavaScript SDKs docs.sarvam.ai OpenAI's POST /v1/audio/speech protocol, a WebSocket endpoint and a Pipecat integration

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 Sarvam if…

  • You need Bengali, Marathi, Kannada, Malayalam or Odia today. Bulbul speaks 11 languages and Saaras transcribes 23.
  • You want a huge voice catalogue. Bulbul V4 Flash has 200+ voices.
  • Your agent volume is small. Sarvam's pay-as-you-go minute costs less than our T5.
  • You want translation and document APIs from the same supplier.

Choose Frequency if…

  • You want the phone line inside the agent's rate, not on top of it.
  • You make a lot of calls. Our agents cost ₹1 a minute on the volume plan.
  • Your code already uses OpenAI's speech API. Switching is a new base URL and a model name.
  • You want speech, transcription and full phone agents from one team, on one key.

Moving

Moving your code across is easy.

Your code stays. Three values change.

  1. Step 1

    Open the sandbox.

    Look around with no sign-up. When you are ready, create a key in Developers.

  2. Step 2

    Change three values.

    The base URL, the model and the voice. The rest of your OpenAI code stays as it is.

  3. Step 3

    Pick a voice.

    Four voices, each speaking Hindi, English, Gujarati, Tamil and Telugu.

Open the sandbox

Switching takes an afternoon

Fourier TTS speaks OpenAI’s speech API. Point your client at our URL, change the model name, pick a voice and you’re done. Ask for 8 kHz μ-law and the audio is ready for a phone line. The OpenAI-compatible TTS guide walks through the first request.

Before you switch, take twenty lines from your own calls, with names, rupee amounts and English words dropped in. Play both voices to people who speak the language every day, without saying which is which. Then decide.

import os
from openai import OpenAI

client = OpenAI(
    api_key=os.environ["MIRA_API_KEY"],
    base_url="https://sandbox.voice.miraiminds.co/v1",  # 1. our URL
)

with client.audio.speech.with_streaming_response.create(
    model="mira-tts",       # 2. our model
    voice="ashu",           # 3. one of our voices
    response_format="pcm",  # always send it
    input="चलिए, आपका order कल deliver होगा।",
) as response:
    for chunk in response.iter_bytes():
        ...  # raw 16-bit mono PCM at 48 kHz, playable as it arrives

Questions

Here is what people ask before switching from Sarvam.

Do listeners prefer Fourier TTS or Bulbul?

On Voice Arena's blind Hindi leaderboard (16 October 2026), Fourier TTS scores 993 against 959 for Bulbul V3. Mira leads in everyday conversation and in education. Bulbul leads in customer support and in media. Mira has fewer votes, so its score can still move.

Is Fourier TTS ₹1 a minute?

No. ₹1 a minute is the price of a whole phone agent on our volume plan. The voice on its own is ₹1.80 per 1,000 characters.

Is Sarvam's agent cheaper than yours?

On pay as you go, yes: ₹3.50 a minute, plus ₹0.40 for a full minute on its line, against our ₹5 with the line included. On a monthly plan, Sarvam is ₹3.00 to ₹3.25 plus the line, and ours is ₹3 on T3 or ₹1 on T1.

Which one is faster?

We haven't measured Bulbul, so we won't claim either way. Time both from your own servers, from the request to the first audio.

Do you speak Tamil, Telugu or Bengali?

Tamil and Telugu, yes. They're live in our speech recognition and our voice, with Hindi, Gujarati, English and Hinglish. Bengali, Marathi and Kannada are on the way. Sarvam covers more Indian languages today.

Still deciding? Ask us.

Fifteen minutes with the team that builds it. Bring your script, or your hardest call.

Book 15 minutes

Related

Book a call

15 minutes with Sneh Mehta

Finding a time for us…

Powered by Cal.comOpen calendar in a new tab ↗

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