ElevenLabsCartesiaAudio matchupSpeech output
Eleven v3vs.Sonic 3.6
Which model is better?
Sonic 3.6 does better in independent tests.
Pick Eleven v3 for
Pick Sonic 3.6 for
Shared tests
Independent evaluators and leaderboards only, the newest shared snapshot per evaluator. With 95 % ranges a lead counts when they do not overlap; for hit rates, when it holds in a 95 % test. Without any uncertainty figure at most “slightly ahead”.
Cekura
Eleven v3 slightly aheadEleven v3 is clearly ahead in 0 of 4 subtests and slightly in 3, Sonic 3.6 in none. 1 is level.
Cekura TTS hard-part accuracy: read from context
as of October 19, 2026
Cekura TTS hard-part accuracy: codes and addresses
as of October 19, 2026
Cekura TTS hard-part accuracy: numbers and shorthand
as of October 19, 2026
Show all 4 subtests
| Subtest | Eleven v3 | Sonic 3.6 | Verdict |
|---|---|---|---|
| Cekura TTS hard-part accuracy: read from context | 94.0 % | 58.0 % | Eleven v3 slightly ahead |
| Cekura TTS hard-part accuracy: codes and addresses | 89.0 % | 75.0 % | Eleven v3 slightly ahead |
| Cekura TTS hard-part accuracy: numbers and shorthand | 81.0 % | 71.0 % | Eleven v3 slightly ahead |
| Cekura TTS hard-part accuracy: medical terms | 100.0 % | 100.0 % | level |
Source · latest October 19, 2026
VoiceArena
Sonic 3.6 aheadSonic 3.6 is clearly ahead in 4 of 4 subtests, Eleven v3 in none.
VoiceArena TTS Elo: US English
95 % ranges 977 to 991 and 1,047 to 1,071, as of October 28, 2026
VoiceArena TTS Elo: Mexican Spanish
95 % ranges 991 to 1,023 and 1,065 to 1,097, as of October 28, 2026
VoiceArena TTS Elo: Hindi
95 % ranges 1,036 to 1,052 and 1,081 to 1,107, as of October 28, 2026
Show all 4 subtests
| Subtest | Eleven v3 | Sonic 3.6 | Verdict |
|---|---|---|---|
| VoiceArena TTS Elo: US English | 984 | 1,059 | Sonic 3.6 ahead |
| VoiceArena TTS Elo: Mexican Spanish | 1,007 | 1,081 | Sonic 3.6 ahead |
| VoiceArena TTS Elo: Hindi | 1,044 | 1,094 | Sonic 3.6 ahead |
| VoiceArena TTS Elo: Brazilian Portuguese | 1,034 | 1,078 | Sonic 3.6 ahead |
Source · latest October 28, 2026
Artificial Analysis
Sonic 3.6 aheadSonic 3.6 is clearly ahead in 2 of 2 subtests, Eleven v3 in none.
Artificial Analysis Provider Voice Arena preference
95 % ranges 1,177 to 1,197 and 1,280 to 1,306, as of November 3, 2026
Artificial Analysis Controlled Voice Arena Elo
95 % ranges 1,063 to 1,085 and 1,135 to 1,159, as of November 3, 2026
Source · latest November 3, 2026
DesignArena
Sonic 3.6 slightly aheadDesignArena Audio Realism Elo
as of October 28, 2026
Source · latest October 28, 2026
All data side by side
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