Facts Short
Did you know that an octopus has three hearts? And that's not even the strangest part.
Voices · English
Karthik, an Indian English male AI voice
Karthik is a male Indian English voice for Pāṇini TTS, with a enthusiastic, professional tone. The playground opens with the sentence from Karthik's own reference recording; replace it with your script and press play.
Hi, your subscription renews in a couple of days, everything's set on our end, just wanted to give you a heads up.
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English
Voices
Free to play in your browser without an account, up to 220 characters at a time. To save the audio, sign up free for 10,000 characters and one voice clone, no card required: the dashboard saves WAV and the API returns MP3.
Last verified 26 October 2026
About Karthik
What Karthik suits
Karthik speaks English with an Indian accent in an enthusiastic, professional tone. It suits science facts Shorts, startup stories and exam-preparation videos for students.
- Language
- English
- Accent
- Indian
- Tone (catalogue)
- Enthusiastic, Professional
- Gender
- Male
- Model
- Pāṇini TTS
Sample lines
Three lines to try with Karthik
Lines a creator would really use in English. Each one plays live in Karthik's voice; copy any of them into the playground to change it.
Startup story
This company started in a single room in Bengaluru. Today, millions of people use it every day.
Exam prep
Here are the five topics that come up in almost every board exam. Save this for later.
Languages
Karthik can read other languages too
A Pāṇini TTS voice is not locked to one language. The language comes from the text you type, so Karthik can read any of the 250+ languages Pāṇini TTS supports, including text that mixes two languages.
Karthik's accent carries over: a script in another language sounds like a Indian English speaker reading it. That is useful for bilingual channels; for a native sound in another language, choose a voice recorded in it.
More on Indian English text to speech. See text to speech in every language.
English voices
Other English voices
- Diya · female, Indian, conversational, expressive
- Kabir · male, Indian, relaxed, professional
- Rahi · female, Indian, conversational, calm
- Jhanvi · female, Indian, conversational, calm
- Ishaan · male, Indian, enthusiastic, professional
- Nikhil · male, Indian, calm, professional
- Ruhi · female, Indian, enthusiastic, professional
- Liz · female, American, warm, expressive
- Mark · male, American, relaxed, professional
- Jonathan · male, American, energetic, professional
- Charlotte · female, British, warm, expressive
- George · male, British, calm, expressive
- Archie · male, Australian, calm, professional
Nearby languages
Voices in related languages
Browse all 63 voices by language, make a clone of your own voice from a 10-second sample, start from the free voice-over scripts, or see everything for creators.
Commercial use
Use English AI voice-overs on monetised channels
- Use the audio in YouTube videos, Shorts, Instagram Reels, podcasts and ads, including on monetised channels.
- This applies to the free tier and to paid credits. No attribution to Sonex Labs is needed.
- You are responsible for your script, and for disclosing realistic synthetic content where a platform asks you to.
The full wording is in our terms of service.
YouTube
Can a channel with an AI voice be monetised?
Yes, AI voices are allowed. What YouTube limits is mass-produced, repetitive content: videos made from a template with little original work. Its July 2025 update renamed that rule from “repetitious” to “inauthentic” content (YouTube’s monetisation policies).
Write your own script, add your own research or editing, and keep one consistent voice for the channel. Where a realistic AI voice could mislead viewers, use YouTube’s altered or synthetic content label. The monetisation decision is always YouTube’s.
FAQ
Karthik, answered
Yes. Play Karthik on this page without an account, up to 220 characters at a time. A free account adds 10,000 characters and one voice clone, no card required. After that, Pāṇini TTS costs $0.03125 per 1,000 characters, the same rate for every language.
Yes, after free sign-up. The playground above plays Karthik in your browser only, with no account. Sign up free and the dashboard saves each clip as a WAV file (Download audio), or the API returns MP3 when you set "output_format": "mp3".
Yes. Audio you generate, on the free tier or with paid credits, can be used on monetised YouTube channels, Shorts, Reels and in ads, with no attribution. YouTube limits mass-produced, repetitive videos, not AI voices, so write your own script and keep your edits original. The monetisation decision is YouTube's.
The audio you generate is yours to use, including commercially, with no attribution and no royalties to Sonex Labs. You are responsible for the script itself: if you read someone else's text, you need their permission.
Yes. Karthik can read any of the 250+ languages Pāṇini TTS supports, because the language comes from the text you type, not from the voice. Karthik's accent carries over, so a script in Spanish sounds like a Indian English speaker reading Spanish. For a native sound in another language, pick a voice recorded in it from the full voice list.
Make your first English voice-over with Karthik
10,000 free text-to-speech characters and one free voice clone that speaks every language, no card required. Every language is billed at the same rate.