Voice AI

Speech-to-text, text-to-speech, and translation — 15 products across 6 providers, including India-focused ones (Sarvam AI, Krutrim's Dhwani) alongside the major global platforms.

Not yet benchmarked here. Every number below is a real price and language count taken straight from each provider's own pricing docs (linked on every row) — not a speed or quality measurement. This site's recording pipeline only measures text LLMs today; real, measurable speed/quality data for voice is recording soon. Compiled September 8, 2026.

Voice → Text

Transcribes spoken audio into text.

Product
Languages
Price
OpenAI — Whisper / GPT-4o Transcribe
~50 languages
$0.006/min (~$0.36/hr)
Legacy Whisper and GPT-4o Transcribe are both priced the same; diarization (speaker labels) included at no extra cost.
OpenAI — GPT-4o Mini Transcribe
~50 languages
$0.003/min (~$0.18/hr)
Cheaper, lower-accuracy tier of the same transcription API.
Google Cloud — Speech-to-Text (Chirp / V2)
125+ languages and variants
$0.016/min (~$0.96/hr)
Standard recognition, first 500K minutes/month; volume pricing steps down to $0.004/min above 2M minutes/month. A cheaper batch tier ($0.003/min, 24-hour turnaround) also exists.
ElevenLabs — Scribe v2
99 languages
$0.22/hr
Realtime variant costs more, $0.39/hr. Entity detection (+$0.07/hr) and keyterm prompting (+$0.05/hr) are optional add-ons.
Deepgram — Nova-3
45+ languages
$0.0043–$0.0058/min (~$0.26–$0.35/hr)
Monolingual streaming $0.0048/min, multilingual streaming $0.0058/min; pre-recorded audio is slightly cheaper than streaming.
Sarvam AI — Saarika / Saaras (STT)
23 Indic languages + English
₹30/hour (~$0.32/hr)
Converted at ₹94.6/$1 (Sept 2026 mid-market rate) — check docs.sarvam.ai for the current ₹ price, which is the one Sarvam actually bills.
Krutrim AI Labs — Dhwani
English + 8 Indic languages
Not publicly priced
An end-to-end speech LLM — understands speech directly and translates it, without a separate ASR step. Open weights on Hugging Face/GitHub; commercial API access is via Krutrim Cloud, which doesn't publish a per-minute or per-character rate.

Text → Voice

Synthesizes spoken audio from text.

Product
Languages
Price
OpenAI — TTS (tts-1 / tts-1-hd / gpt-4o-mini-tts)
~50 languages
$15/1M characters (tts-1) – $30/1M (tts-1-hd)
gpt-4o-mini-tts is priced differently — by tokens, not characters (≈$0.60/1M input tokens + $12/1M audio-output tokens, roughly $0.015 per minute of generated audio) — and adds steerable voice instructions the older two models don't have.
Google Cloud — Text-to-Speech
50+ languages, 300+ voices
$4/1M characters (Standard/WaveNet) – $160/1M (Studio)
Wide tier spread by voice quality: Standard/WaveNet $4/1M, Neural2/Polyglot $16/1M, Chirp3-HD $30/1M, Instant Custom Voice $60/1M, Studio $160/1M.
ElevenLabs — TTS (v2/v3 Multilingual, Flash/Turbo)
70+ languages
$0.05–$0.10 per 1K characters ($50–$100/1M)
Flash/Turbo (lower latency) is the cheaper $0.05/1K tier; v2/v3 Multilingual and Conversational are $0.10/1K.
Deepgram — Aura-2
7 languages
$0.03 per 1K characters ($30/1M)
Narrowest language coverage of the TTS products here — built for low-latency voice-agent use cases, not broad multilingual coverage.
Sarvam AI — Bulbul v3 (TTS)
11 Indian languages
₹30/10K characters (~$31.72/1M)
Converted at ₹94.6/$1 (Sept 2026 mid-market rate) — check docs.sarvam.ai for the current ₹ price, which is the one Sarvam actually bills.

Translation

Converts speech or text from one language into another.

Product
Languages
Price
OpenAI — Whisper speech translation
~50 spoken languages → English text only
$0.006/min (~$0.36/hr)
Same endpoint family as transcription, same price — but the /translations endpoint only outputs English text, not a language you choose.
Google Cloud — Cloud Translation API (Basic / Advanced)
100+ languages
$20/1M characters
Same rate for Basic (v2) and Advanced (v3); first 500K characters/month free. Each target language is billed separately.
Sarvam AI — Translate / Mayura
22+ Indian languages
₹20/10K characters (~$21.15/1M)
Converted at ₹94.6/$1 (Sept 2026 mid-market rate) — check docs.sarvam.ai for the current ₹ price, which is the one Sarvam actually bills.
Krutrim AI Labs — Dhwani
English + 8 Indic languages
Not publicly priced
An end-to-end speech LLM — understands speech directly and translates it, without a separate ASR step. Open weights on Hugging Face/GitHub; commercial API access is via Krutrim Cloud, which doesn't publish a per-minute or per-character rate.

Prices and language counts change often — the linked source on each row is the one to trust over this page if they ever disagree. This page covers products, not the underlying models this site actually races: for those, see Discover AI Speed · Compare AI Models · How we measure → · Glossary →