xAI (Grok API)
LLM API · Recognized listing · Founded 2023 · Acquired · Visit website
Established enterprise adoption
Elon Musk's AI lab, developer of the Grok model family and API; available government-wide via a September 2025 GSA OneGov agreement, alongside a separately reported $200M Pentagon/DoD deployment. Acquired by SpaceX in an all-stock merger (Feb 2026) and folded into the renamed parent, SpaceXAI (July 2026), which is itself publicly traded (Nasdaq: SPCX, IPO'd June 2026).