AI ranking change · 2026-07-12
Cartesia Sonic overtakes Cartesia as ChatGPT's #1 pick
for text-to-speech api for voice agents
Cartesia→Cartesia Sonic
On 2026-07-12, ChatGPT changed its #1 recommendation for best text-to-speech api for voice agents — dropping Cartesia from the top spot in favor of Cartesia Sonic. The previous #1 had held since 2026-07-12.
“Best overall balance of natural speech, industry-leading streaming latency, 42 languages, reliable transcript following, and excellent handling of phone numbers, codes, and emails”— ChatGPT
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