Grok Voice API
rank 07 in voice & audio · last updated · get your badge · is this your tool?
numptr says7.5/10
tops the speech-to-speech charts for eight cents a minute. the call centre's shaking.
- pricing
- speech to speech (Grok Voice 3.0) $0.08/min ($4.80/hr) + $0.004 per text input
- text to speech $15 per M characters
- speech to text $0.10/hr ($0.20/hr streaming)
- free tier
- unknown: no free tier listed on SpaceXSI's pricing pages (pay as you go)
- pricing source
- https://docs.x.ai/developers/pricing (checked 2026-10-18)
the boring-but-important bits, all sourced. you're welcome.
full specs: grok-voice-api.specs
numptr specs grok-voice-api
- best for
- realtime voice agents for support and sales calls
- official site
- https://x.ai/api/voice
- affiliate / referral
- none found. and no, it doesn't touch the rank.
# checked by numptr, not the vendor's marketing team.
# verified 2026-10-18 · docs.x.ai
built with Grok Voice API
# nobody's posted a build with Grok Voice API yet. post your build
the numptr weekly
prices move. we tell you every monday. no spam, no waffle.