Reso 1v1.0
Our first speech model. A streaming text-to-speech system that sounds human in English and Hindi, code-switches mid-sentence, and starts speaking before the sentence is finished.
Warm, conversational male
Your appointment is confirmed for tomorrow at eleven. I've sent the details to your phone.
Built for live conversation.
Streaming, not batch
Reso 1 emits audio in chunks as it reads, so the first phoneme lands in milliseconds. Built for live phone calls, not file rendering.
Bilingual, with code-switching
Fluent English and Hindi in one voice, including the Hinglish that real Indian conversations are made of, switched mid-sentence without a seam.
Expressive control
Pace, emphasis, and intonation respond to punctuation and markup, so a confirmation sounds reassuring and an alert sounds urgent.
Consistent voices
Each named voice holds its identity across languages and a full call, no drift, no uncanny resets between turns.
The numbers.
Figures from internal evaluation. Final published metrics may vary by deployment.
Four voices, two languages, one model.
Each voice holds the same identity across English and Hindi. Press play to hear it, or ask us about a custom voice tuned to your brand.
Aarav
Warm, conversational male
“Your appointment is confirmed for tomorrow at eleven. I've sent the details to your phone.”
Meera
Bright, expressive female
“That's a great question. Let me pull up your account and we'll sort it out right now.”
Kabir
Calm, authoritative male
“For security, I'll send a one-time code to your registered number. Please read it back to me.”
Isha
Crisp, neutral female
“Thanks for waiting. Your refund of one thousand two hundred rupees is on its way.”
Reso is a family.
Reso 1 is the first model out the door. Speech recognition and more Indian languages are training behind it, on the same streaming architecture.
Reso 1 — TTS
Streaming text-to-speech in English and Hindi, with named voices.
Available to partnersReso ASR
Streaming speech recognition tuned for Indian accents and telephony audio.
Early access soonMore Indian languages
Marathi, Tamil, Bengali, and Telugu, on the same streaming architecture.
On the roadmapPut Reso 1 to work on your calls.
Tell us about your use case. We will set up Reso 1 and the products on your numbers, with India data residency and voices tuned to your brand.