xAI text-to-speech models & pricing
3 models listed · appears on 3 of 3 boards · from $15.00/1M
AI company offering Grok TTS in standard and streaming variants.
Models on the boards
ModelReleased$/1M charsBoardsComposite
SpaceXAI TTSMar 2026$15.01/353.0
Grok TTSMar 2026$15.02/320.0
Grok TTS (Streaming)—$15.01/310.0
Latency from public benchmarks
Time to first audio, in milliseconds, as each benchmark publishes it. We don't measure latency ourselves, and the sources measure differently (harness, region, sample size), so each figure stays under its own source. Not part of the composite score.
ModelCoval, Time to first audio, p50, us-east-1, millisecondsSpeko, Time to first audio, p50, US East, millisecondsHumanness Index, Time to first audio, median, milliseconds
Grok TTS335 ms7-day window to Oct 11, 2026272 msmeasured Jul 3, 2026460 msmeasured June 2026
Grok TTS (Streaming)——285 msmeasured June 2026
Coval: Time to first audio, p50, us-east-1, read Oct 11, 2026 · Speko: Time to first audio, p50, US East, read Oct 11, 2026 · Humanness Index: Time to first audio, median, read Oct 11, 2026. How latency is sourced.