ElevenLabs launches Eleven v4 and v4 Turbo with sub-150ms latency

ElevenLabs released Eleven v4 and Eleven v4 Turbo on September 28, 2026. Turbo recorded a median time to first speech of about 150 ms, while v4 topped the Artificial Analysis leaderboard with an Elo of 1319 versus 1276 for Cartesia Sonic 3.6.

• Eleven v4 interprets context, character and scene instead of just reading text
• Turbo: median time to first speech of roughly 150 ms
• Elo 1319 in Artificial Analysis vs 1276 for Cartesia Sonic 3.6
• Inline tags like [laughs] and [said angrily] replace SSML markup