← Back to Frontier Features
xAI
Grok Voice Agent API
Launched Dec 17, 2025
An API for building multilingual voice agents that call tools and search real-time data, on the stack behind Grok Voice in the apps and Tesla vehicles.
- Surface
- API
- Availability
- Generally available
- Plans
- —
- Retired
- —
Strengths & weaknesses
Strengths
- Flat $0.05 per minute
- Under 1 s average time-to-first-audio (xAI figure)
Ranking claims (Big Bench Audio #1) are xAI's own, citing Artificial Analysis.