Comparison of speech synthesizers

! Creator(s)

! First public release date

! Latest stable version

! Software license

| 15

| 2020

| 2022

|

| Apple Inc.

| 1984

| 2018

| Bundled with Mac OS X

| AT&T Natural Voices

| {{dunno}}

| 2008

| Proprietary

|Amazon AWS

|2016

|2019

|Proprietary

| Cepstral

| 2000

| 2013

| Proprietary

| CereProc

| 2006

| 2017, February

| Proprietary

| Jonathan Duddington

| 2006, February 10

| 2022, April 3

| GPLv3+

| CSTR

| {{dunno}}

| 2014, December

| MIT-like license

| Paul Lamere
Philip Kwok
Dirk Schnelle-Walka
Willie Walker
...

| 2001, December 14

| 2009, March 9

| BSD

| LumenVox

| 2011

| 2019

| Proprietary

|Microsoft

|1995

|2012

|Bundled with Windows

| ReadSpeaker (Formerly Neospeech)

| 2002

| 2017

| Proprietary

| Nuance Communications, Inc.

| {{dunno}}

| 2018

| Proprietary

! SSML

! SAPI version

! WS

! PLS

! CLI

| {{dunno}}

| {{dunno}}

| {{dunno}}

| {{dunno}}

| {{dunno}}

| {{dunno}}

| {{dunno}}

| {{dunno}}

| {{dunno}}

| {{dunno}}

| {{Yes}}

|5.1

| {{dunno}}

| {{dunno}}

| {{dunno}}

| {{Yes}}

|5.x

| {{Yes}}

| {{Yes}}

| {{Yes}}

| {{Yes}}

|5.x

| {{Yes}}

| {{Yes}}

| {{Yes}}

| {{Yes}}

|5.x

| {{dunno}}

| {{dunno}}

| {{Yes}}

| {{dunno}}

| {{dunno}}

| {{dunno}}

| {{dunno}}

| {{Yes}}

| {{dunno}}

| {{dunno}}

| {{dunno}}

| {{dunno}}

| {{dunno}}

| {{Yes}}

|5.x

| {{Yes}}

| {{Yes}}

| {{Yes}}

| {{partial|5.x only|align=|style=|color=}}

|4.x/5.x

| {{dunno}}

| {{dunno}}

| {{dunno}}

| {{dunno}}

| {{dunno}}

| {{dunno}}

| {{dunno}}

| {{dunno}}

| {{Yes}}

|5.x

| {{dunno}}

| {{dunno}}

| {{dunno}}

! Online demo

! Available language(s)

! Available voices

! Programming language

! Operating system(s)

| {{yes}}

| English (United States)

| 50+

| Python

| Any

| {{dunno}}

| English (United States), ...

| 15+

| {{dunno}}

| Macintosh

| {{yes}}

| English (British), English (Indian), English (US), French, French (Canadian), German, Italian, Spanish (Latin American)

| 20

| C++

| Linux
Windows

| {{yes}}

| English (British), English (US), Italian, French (Canadian), German, Spanish (American), ...

| 25+

| C/C++

| Mac OS X
Windows
i386-Linux
x86-64-Linux
Sparc-Solaris
i386-Solaris

| {{yes}}

| English (British), English (US), English (Scottish), English (Irish), French, French (Canadian), German, Austrian German, Italian, Irish, Spanish (Castilian), Spanish (Latin American), Dutch, Polish, Portuguese, Portuguese (Brazilian), Japanese, Catalan, Scottish Gaelic, Swedish, Russian, Mandarin

| 46

|

Java / C C++ / Objective C / Python / C# & .Net through SAPI

| Linux
Windows
Mac OS X
Embedded Linux
Android
iOS
Cloud service

| Samples

| Afrikaans, Albanian, Armenian, Cantonese, Catalan, Croatian, Czech, Danish, Dutch, English (British, US, Scottish, Westindies...), Esperanto, Estonian, Finnish, French (France, Belgium), Georgian, German, Greek, Hindi, Hungarian, Icelandic, Indonesian, Italian, Kannada, Kurdish, Latvian, Lojban, Macedonian, Malayalam, Mandarin, Norwegian, Persian, Polish, Portuguese, Romanian, Russian, Serbian, Slovak, Spanish, Swahili, Swedish, Tamil, Turkish, Vietnamese, Welsh.

| several

| C++

| Linux
Windows
Mac OS X
RISC OS

| {{yes}}

| English (UK), English (US), Spanish, Hindi, Croatian, Finnish, Polish, Welsh.

| Several

| C++

| Linux
Windows

| {{dunno}}

| English...

| Several

| Java

| Cross-platform

| {{yes}}

| Danish, Dutch, English (Australian), English (US), English (UK), English (Welsh), English (Indian), French, French (Canadian), German, Icelandic, Italian, Polish, Portuguese, Portuguese (Brazilian), Romanian, Russian, Spanish (North American), Spanish (Latin American), Spanish (Castilian), Swedish, Turkish, Welsh, Welsh English

| 57

| C/C++

| Windows
Linux

| {{yes}}

| US English, Australian English, Indian English, Irish English, South African English, UK English, Argentinian Spanish, Castilian Spanish, Colombian Spanish, Mexican Spanish, Arabic, Catalan, Basque, Galician, Dutch, Belgian Dutch, Portuguese, Brazilian Portuguese, Bulgarian, French, Canadian French, Cantonese (Hong Kong), Mandarin, Mandarin Taiwanese, Czech, Danish, Finnish, German, Greek, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Korean, Norwegian, Polish, Romanian, Russian, Slovak, Swedish, Thai, Turkish

| 70+

| C/C++

| Windows
Linux
Android

| {{yes}}

| English (US), English (British), American Spanish, Canadian French, Chinese Mandarin, Japanese, Korean

| 13

| C/C++/Java

| Windows
Linux