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Text-to-Speech · Multilingual

Tamil

Language

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Benchmarks

X
Y
200ms400ms600ms800ms155016001650Time to first audio lower is betterNaturalness higher is betterGemini 3.1-flash-tts-previewCartesia sonic-3.5Maya 2 NativeElevenLabs eleven_v3_conversationalspeko.ai/benchmarks

Naturalness

higher is better

1500 is this language's own field — not comparable across languages.

field averagetied with bestSpeechifySpeechifysimba-multilingual1144AzureAzureAI Speech (native)1462SpeechifySpeechifysimba-3.51513ElevenLabseleven_v3_conversational1543Google ChirpGoogle Chirp3-hd1555Maya2 Native1603Cartesiasonic-3.51620GeminiGemini3.1-flash-tts-preview1676
80010001200140016001800

Time to first audio

lower is better

The pause the caller hears before the agent starts speaking. Figures are the English measurement — Tamil has no sweep of its own yet.

Maya2 Native100ms · 114ms
Cartesiasonic-3.5108ms · 234ms
ElevenLabseleven_v3_conversational255ms · 298ms
Sonioxtts-rt-v2406ms · 462ms
Sonioxtts-rt-v1410ms · 459ms
ElevenLabseleven_v3474ms · 622ms
GeminiGemini3.1-flash-tts-preview810ms · 987ms
0ms300ms600ms900ms

p50 p90

Robustness

higher is better

Whether the voice says the right words for a number, date, currency amount or operator.

0.75
Gemini0.70
0.70
0.43
0.38
Google Chirp0.35
0.10
0.05
Speechify0.00
0.000.250.500.751.00

Cost

lower is better

$ per 1M characters · vendor list price, the same in every language

$4
$13
$13
$20
$33
$50
$50
Maya2 NativeSonioxtts-rt-v1Sonioxtts-rt-v2SpeechifySpeechifysimba-3.5GeminiGemini3.1-flash-tts-previewElevenLabseleven_v3_conversationalCartesiasonic-3.5