Google Cloud · 2022– · Cloud TTS
Google Cloud’s general-purpose neural voices before Chirp. Still widely deployed. The documentation sample is the same demo sentence Google published for Standard and WaveNet, which makes those three a fair intra-vendor listen.
Workhorse Cloud TTS after WaveNet, before Chirp.
Vendor / paper demo
en-US-Neural2-A · Google Cloud TTS docs, en-US-Neural2-A.
Google Cloud Text-to-Speech documentation sample for en-US-Neural2-A. Google publishes the same demo line across Standard, WaveNet, and Neural2, so those three cards are a fair intra-vendor listen.