How to change the speaker voice

The speaker parameter lets you choose a specific voice for the speech output.

Speaker names are case-sensitive and must be lowercase (e.g., shubh, not Shubh).

Hear every voice before you choose: see the Voices page for embedded audio samples of all speakers, including multilingual comparisons.

Speaker Selection

Specify the speaker using the speaker parameter in your request. It is an optional parameter — if omitted, the API uses the default voice (shubh for bulbul:v3, anushka for bulbul:v2).

Available Voices — Bulbul v3

Bulbul v3 offers 30+ natural-sounding voices:

Male: shubh (default), aditya, rahul, rohan, amit, dev, ratan, varun, manan, sumit, kabir, aayan, ashutosh, advait, anand, tarun, sunny, mani, gokul, vijay, mohit, rehan, soham

Female: ritu, priya, neha, pooja, simran, kavya, ishita, shreya, roopa, tanya, shruti, suhani, kavitha, rupali

Production-Recommended Speakers (Bulbul v3)

Speakers are evaluated by Critical Error Rate (CER) — the percentage of words with critical pronunciation errors. Lower CER = higher reliability.

Tier	CER Range	Recommendation
Tier 1 — Excellent	≤ 0.20%	First choice for all production use
Tier 2 — Good	0.21–0.40%	Safe for production use
Tier 3 — Moderate	0.41–0.60%	Acceptable; test per language before deploying

Speaker	Gender	CER	Quality Tier
mani	Male	0.00%	Tier 1 — Excellent
priya	Female	0.13%	Tier 1 — Excellent
ishita	Female	0.13%	Tier 1 — Excellent
varun	Male	0.06%	Tier 1 — Special Use ★
roopa	Female	0.26%	Tier 2 — Good
shubh	Male	0.30%	Tier 2 — Good
pooja	Female	0.30%	Tier 2 — Good
sunny	Male	0.33%	Tier 2 — Good
ratan	Male	0.33%	Tier 2 — Good
rehan	Male	0.33%	Tier 2 — Good
ashutosh	Male	0.40%	Tier 2 — Good
amit	Male	0.40%	Tier 2 — Good
rahul	Male	0.40%	Tier 2 — Good
aditya	Male	0.46%	Tier 3 — Moderate
simran	Female	0.46%	Tier 3 — Moderate
suhani	Female	0.46%	Tier 3 — Moderate
shreya	Female	0.46%	Tier 3 — Moderate
anand	Male	0.46%	Tier 3 — Moderate
rupali	Female	0.50%	Tier 3 — Moderate
neha	Female	0.53%	Tier 3 — Moderate
ritu	Female	0.53%	Tier 3 — Moderate
manan	Male	0.53%	Tier 3 — Moderate
dev	Male	0.60%	Tier 3 — Moderate

★ Note on varun: Despite having a very low CER (0.06%), varun carries a deep, dramatic villain/suspense character. He is not suitable as a neutral default. Reserve varun exclusively for thriller, drama, or suspense content.

Recommended Speakers by Language

Not all speakers perform equally across all languages. Always use these language-specific picks over arbitrary selection:

Language	Code	Recommended Male	Recommended Female
English	`en-IN`	ratan	ishita
Hindi	`hi-IN`	shubh, ashutosh	priya, suhani
Telugu	`te-IN`	shubh, ratan	neha, priya
Kannada	`kn-IN`	shubh, ratan	neha, ishita
Bengali	`bn-IN`	rehan	roopa, suhani
Tamil	`ta-IN`	ratan, rohan	ishita, ritu
Odia	`od-IN`	shubh	ritu, pooja
Malayalam	`ml-IN`	shubh	pooja
Marathi	`mr-IN`	ratan	priya, ritu
Punjabi	`pa-IN`	mani	roopa, suhani
Gujarati	`gu-IN`	ratan	priya, ritu

Top picks: priya & ishita (best female — use across Hindi, Telugu, Kannada, Tamil, Marathi, Gujarati, English) · mani (best male overall, Punjabi) · shubh (best male for hi, te, kn, od, ml) · ratan (best male for en, te, kn, ta, mr, gu).

Listen to every voice on the Voices page, or test custom text live on our dashboard: Voice Samples – Sarvam TTS

Example Code

Rest API

Streaming API

1 from sarvamai import SarvamAI
2 from sarvamai.play import save
3 
4 # Initialize the REST client
5 client = SarvamAI(api_subscription_key="YOUR_SARVAM_API_KEY")
6 
7 # Generate speech using REST
8 audio = client.text_to_speech.convert(
9     text="Welcome to Sarvam AI!",
10     model="bulbul:v3",
11     target_language_code="en-IN",
12     speaker="shubh"
13 )
14 save(audio, "output1.wav")