Grok Voice Powers Starlink Phone Sales and Support, Resolving 70% of Support Inquiries Without a Human

Grok Voice, a voice agent from SpaceXSI, enables Starlink's phone sales and customer support experience at +1 (888) GO STARLINK. SpaceXSI reports a 70% resolution rate on support inquiries and a 20% conversion rate on sales inquiries, handled by a single agent that uses 28 tools across hundreds of support and sales workflows. On sales, the announcement says: "In 1 out of every 5 of sales inquiries, the customer purchases Starlink service while on the phone with Grok." On support, it says: "The majority of customer support inquiries are resolved autonomously by the Grok Voice agent with no human in the loop." The line has to work across numerous languages, help customers through customer support scenarios and onboard new customers through sales. SpaceXSI built Grok Voice 1.0 in tight collaboration with partners like Starlink and announced it on 23 April 2026 as a flagship voice model available via API. The model was tested under telephony audio, background noise, heavy accents and frequent interruptions, and natively supports 25+ languages. It collects email addresses, street addresses, phone numbers, full names and account numbers even when they are spoken quickly or with a strong accent, and it accepts natural corrections. Grok Voice performs reasoning in the background with no impact on response latency. In the Starlink deployment, the agent autonomously performs hardware troubleshooting workflows, issues hardware replacements and grants service credits. SpaceXSI also states that the model takes the top spot on the τ-voice Bench leaderboard, which evaluates full-duplex voice agents under noise, accents, interruptions and turn-taking.