X Freeze(@XFreeze):Grok Voice just ranked #1 on Vapi’s Humanness Index and it's scary good That is a huge deal This benchmark is simple: Listeners hear blind same-voice battles and pick which voice sounds more human Grok TTS scored 100 in humanness matching the human baseline That means Grok is reaching human-level voice quality on one of the most important benchmarks for real AI agents And Grok is doing this at $15 per 1M characters, while major competitors listed on the leaderboard are charging $60–$100 xAI is building world's best voice layers for real AI agents

2026.06.17 05:03

Grok Voice just ranked #1# on Vapi’s Humanness Index and it's scary good That is a huge deal This benchmark is simple: Listeners hear blind same-voice battles and pick which voice sounds more human Grok TTS scored 100 in humanness matching the human baseline That means Grok is reaching human-level voice quality on one of the most important benchmarks for real AI agents And Grok is doing this at $15 per 1M characters, while major competitors listed on the leaderboard are charging $60–$100 xAI is building world's best voice layers for real AI agents